How To Set Off A Nuclear Bomb

Learn about the steps and materials needed to brand a nuclear weapon, a description of weapon designs, and a history of nuclear weapon tests.

Table of Contents
one. Implosion pattern
2. Gun assembly design
3. Thermonuclear weapons
4. Nuclear weapon materials
5. Effects of nuclear weapons
Tabular array ane - Constructive lethal radii for nuclear weapons
Table ii - Five psi radii for various yield nuclear weapons
6. The first bombs and recent tests

ane. Implosion design

*Figure 1 – A schematic diagram of an implosion bomb similar to the one designed past Iraq*

i.1 Legend for Figure i
Firing Set : a wiring organization that sends a large electrical impulse to gear up off the detonators.
Detonators : devices used to ignite the loftier explosive section of the weapon.
High explosive : shaped charges made from materials such as HMX, RDX, and TATB.
Tamper : a dense metallic such as natural uranium that holds the cadre together by inertia.
Reflector : a cloth such as beryllium that bounces neutrons back into the cadre to increase fission.
Core : made of metallic plutonium-239 or uranium-235, the well-nigh widely used "fissile" isotopes, so-called because of their natural property to split, or fission, when struck by a low energy (or "thermal") neutron.
Initiator : a source of neutrons that can exist a pellet (made of a sandwich of polonium-210 and glucinium separated by a layer of gold foil) placed in the centre of the core, or that can be a tubular device mounted on the outside of the bomb that shoots a flare-up of neutrons into the core at the moment of detonation.

1.two Mechanics of an implosion device
In a so-called "implosion" weapon, which is the most common blueprint used today, the weapon is armed with detonators that initiate the explosion. Regardless of the style the weapon is delivered (missile, bomb, artillery vanquish) the detonators fire simultaneously to fix off a accuse of high explosives that ring the outer surface of the tamper. These high explosives are finely machined in a lens configuration that sends daze waves into the middle of the weapon. The stupor waves compress the fissile core of uranium or plutonium into what is known as a supercritical state.

The physical basis of a nuclear weapon lies in creating this supercritical country. When a fissile nucleus is struck by a neutron, the nucleus splits and emits additional neutrons and a large amount of energy. These newly freed neutrons can and then strike and fission other nuclei, which produces a chain reaction. When the fissile material is arranged in such a style that the fission of i nucleus leads to the fission of one other nucleus, the chain reaction is cocky-sustaining and the material is said to accept reached its disquisitional mass. Thus, supercriticality is when the fission of i nucleus in the chain reaction leads to the fission of more than ane other nucleus.

Each fission event releases a large corporeality of free energy in the form of light, estrus, and radiation, so successive generations of fission events in the chain reaction will produce exponentially increasing amounts of energy. The key is to create and sustain a chain reaction long enough to produce the desired explosive energy before the fissile core rips itself apart due to the internal pressure level created by the energy release. For example, 99.9% of the energy released in a 100 kiloton (1 kiloton = ane,000 tons of TNT) nuclear explosion is released in the terminal 7 generations, out of a total of over 50 generations, and occurs in approximately 0.07 microseconds.

The purpose of the tamper is to concur the core together long enough to allow the necessary fission generations to occur, otherwise the weapon will "fizzle" and not release the expected energy yield. The fission taking place in the core exerts force per unit area on the tamper, which responds past pushing back on the core by virtue of the tamper's inertia. The initiator and reflector also human action to preclude fizzling and increment the yield. The polonium in the "pellet" blazon initiator releases alpha particles, a form of radiation, that are blocked past aureate foil until the foil is broken by the implosive shockwave. The alpha particles so hitting the beryllium and produce a reaction that releases neutrons. Thus, the initiator provides a flare-up of neutrons to quickly start the concatenation reaction and maximize fission. The reflector is used to bounce neutrons produced by fission back into the core to fission additional nuclei and increase the yield.

In a variation of this implosion design, a "boosted" yield can be achieved by injecting deuterium and tritium gas into the center of the fissile core. Deuterium occurs in nature; tritium is produced by irradiating lithium in a reactor. The heat and pressure created during the fissioning of the core cause a fusion reaction to occur in the gas, which then releases more neutrons. The actress neutrons act to fission more of the fissile cadre and increase the yield. Boosting can multiply the yield by a factor of 10.
When properly put together, an implosion weapon tin can produce an explosion on the club of a few kilotons to hundreds of kilotons.

2. Gun assembly design

*Figure two – Schematic diagram of a gun associates blueprint*

two.1 Legend for Figure 2
Explosive propellant : chemical explosive, analogous to but non the aforementioned equally the high explosive in an implosion design.
Tamper : non shown in the diagram merely used for the same purpose and composed of the same material as in an implosion design.
Subcritical mass and supercritical mass : exclusively uranium-235 for this design; plutonium-239 volition non work.

two.2 Mechanics
The basic physics of this design is similar to that of the implosion blueprint. Both weapons assemble a supercritical mass of fissile material and apply a tamper to concur the core together long plenty to produce the desired nuclear explosion. However, the mechanics of a gun design are much simpler, which means that the device is much easier to brand.

The uranium-235 is machined into two sub-critical masses, which if joined together would be greater than a critical mass. Then, i of the sub-disquisitional masses is placed at ane end of a tube in front of a propellant, and the other is placed at the other cease of the tube. When the propellant is detonated, it shoots the commencement mass down the tube at a loftier speed. When this mass collides with the second they create a supercritical mass, which produces a fission chain reaction. Once again, the tamper acts to concur the fissile cadre together long plenty to prevent the weapon from fizzling. A neutron generator can also be placed at the cadre'south center to induce greater fission.

Compared to an implosion weapon, the gun assembly acts slower, is non every bit powerful, and uses far more fissile material. Nevertheless, the explosive power is still in the range of tens of kilotons.

3. Thermonuclear weapons

*Effigy iii – Schematic diagram of a multi-stage thermonuclear weapon*

three.1 Legend for Figure three
Chief phase : fission implosion device equally described in department 1, typically additional with deuterium-tritium gas.
Secondary stage : a fusion fuel accuse composed of lithium deuteride, which contains at its center a cylindrical rod of uranium-235 or plutonium-239, and is surrounded by a casing of uranium metal. The fusion reaction commonly employed is that of deuterium and tritium. The tritium is created when the lithium in the lithium deuteride reacts with a neutron.

3.2 Mechanics
A thermonuclear weapon employs fusion as well equally fission. Fusion is the bringing together of 2 nuclei to form a new nucleus. The most common fusion reaction is that of two isotopes of hydrogen, namely tritium and deuterium, thus the term "hydrogen bomb." These isotopes combine to form helium-4 and a neutron. Like to fission, the goal is to create a cocky-sustaining chain reaction that releases exponentially increasing amounts of free energy.

Fusion is non express by the requirement of a critical mass, and so these weapons tin can reach theoretically limitless power. Often they are on the order of a few megatons (1 megaton = ane,000,000 tons of TNT). The largest nuclear weapon ever detonated was an approximately 59 megaton thermonuclear flop produced by the Soviet Union. Fusion, still, requires college temperatures and densities than tin can be achieved by chemic high explosives, and then a nuclear fission explosion is used to create the necessary temperature and density. The event is a ii-stage reaction in which a fission flop explodes first and sets off the secondary, fusion part of the weapon. Every bit can be ended from this word, thermonuclear weapons are non a primary proliferation concern considering fission weapon technology must first be mastered before a thermonuclear weapon tin be developed.

A multi-stage thermonuclear weapon is chosen a Teller-Ulam configuration. The primary stage has the same basic blueprint as an implosion fission weapon, described in department ane. After the chief phase is detonated, the x-rays it releases cause the pressure and temperature within the weapon casing to reach the conditions necessary to achieve a thermonuclear reaction in the fusion fuel. The yield of the fusion fuel is increased when the fissile rod in its center reaches a supercritical country and begins itself to fission. As the fusion fuel reacts, it releases loftier-free energy neutrons that also fission the uranium-238 nuclei that are in the uranium metal casing wrapped around the fusion fuel. In a typical configuration, fission and fusion each contribute about half the overall energy yield.

iii.3 Enhanced radiations (neutron) weapons
Another class of thermonuclear weapons creates the maximum corporeality of radiations possible while minimizing the effects caused by blast. These are called enhanced radiation, or neutron bombs. They rely on fusion between deuterium and tritium to produce a lethal radius of neutrons and gamma rays. The goal is to produce a low yield weapon (deliverable by an arms shell, for example) that inflicts prompt casualties on troops by radiation but leaves intact structures that otherwise would be destroyed by blast furnishings.

Considering fusion releases many times more neutrons than fission for a given weight of fuel, a neutron bomb can create a larger radius inside which there is a lethal dose of nuclear radiation than a small fission bomb tin. A ane kiloton neutron bomb, for example, creates almost the same lethal radius of nuclear radiations as a x kiloton fission weapon. This means that by using a neutron flop, it is possible to accomplish a given radius of lethality with only one tenth of the nail damage that would otherwise be required. These are tactical, non strategic weapons because of their small size. When detonated in the air, they take the additional advantage of producing piddling residual radiation (fallout) so it is plausible to retrieve of them as battleground weapons.

iv. Nuclear weapon materials

Both plutonium-239 and uranium-235 take been used as nuclear explosives in fission weapons. Approximately xc pct of the effort that went into making America'south beginning bombs was devoted to producing these ii materials, which is no piece of cake task.

4.one Plutonium
The globe's start nuclear explosion was achieved with plutonium, a man-made chemical element produced in nuclear reactors. Plutonium is created when an cantlet of uranium-238 absorbs a neutron and becomes plutonium-239. The reactor generates the neutrons in a controlled chain reaction. For the neutrons to be absorbed by the uranium their speed must exist slowed by passing them through a substance known as a "moderator." Graphite and heavy water have been used as moderators in reactors fueled by natural uranium. For graphite to succeed as a moderator it must exist exceptionally pure; impurities volition halt the concatenation reaction. Heavy water looks and tastes like ordinary h2o but contains atoms of deuterium instead of atoms of hydrogen. For heavy water to succeed as a moderator, it too must be pure; it must be free of significant contamination by ordinary h2o, with which it is mixed in nature.

4.1.1 Plutonium needed to make a weapon

4 kilograms: weight of a solid sphere of plutonium just large enough to attain a critical mass with a beryllium reflector. Diameter of such a sphere: 2.86 in (vii.28 cm). Diameter of a regulation baseball: 2.90 in (7.36 cm).
4.4 kilograms: estimated amount used in Israel'south fission bombs.
5 kilograms: estimated amount needed to manufacture a first-generation fission flop today.
6.1 kilograms: corporeality used in the "Trinity" examination in 1945 and in the bomb dropped on Nagasaki.
15 kilograms: weight of a solid sphere of plutonium just large enough to achieve a critical mass without a reflector. Bore of such a sphere: 4.44 in (11.3 cm). Diameter of a regulation softball: three.82 in (9.7 cm).

4.1.two Plutonium generated by various reactors

v.5 to 8 kilograms/twelvemonth: North korea'due south 20-xxx megawatt (thermal) Yongbyon reactor moderated by graphite.
9 kilograms/year: Bharat'south twoscore megawatt (thermal) Cirus reactor chastened by heavy water.
12 kilograms/year: Pakistan'south l megawatt (thermal) Khushab reactor moderated by heavy water.
25 kilograms/year: India's 100 megawatt (thermal) Dhruva reactor moderated by heavy water.
40 kilograms/year: State of israel'due south more 100 megawatt (thermal) Dimona reactor moderated by heavy h2o.
230 kilograms/year: Islamic republic of iran'due south 1,000 megawatt (electric) Bushehr reactor being supplied by Russia and moderated by ordinary (calorie-free) water (non still in operation).

4.1.3 Heavy h2o needed for a small reactor to make nuclear weapons:

19 metric tons: Bharat's 40 megawatt (thermal) Cirus reactor.
More than than 36 metric tons: State of israel's more 100 megawatt (thermal) Dimona reactor.
78 metric tons: India's 100 megawatt (thermal) Dhruva reactor.

4.i.4 Chemic extraction of plutonium
Before existence used in a bomb, plutonium must be separated from the intensely hot, and highly radioactive fuel rods in which information technology is created in a reactor. To attain this separation, a specially shielded chemical plant is needed to chop the fuel rods into pieces, dissolve the radioactive spent fuel in acid, and then excerpt the plutonium in pure form.

4.1.5 Some of the equipment needed to brand plutonium

A nuclear reactor and its associated equipment, such as heavy water or graphite.
A found for fabricating fresh nuclear reactor fuel.
A plant for chemically extracting plutonium from spent reactor fuel.
Large quantities of pure reagents for PUREX or other plutonium extraction processes.
Remote handling equipment to process irradiated fuel.
Shielded casks to ship radioactive textile.
Loftier-density/lead drinking glass radiation shielding windows.
Radiation-hardened TV cameras.
Fuel chopping machines.

4.two Uranium-235
The world'south 2nd nuclear explosion was achieved with uranium-235. This isotope, like plutonium, is unstable and fissions when struck by a neutron. It is, all the same, found in natural uranium at a concentration of only 0.seven percentage. To be useful in a nuclear weapon, the concentration must be increased. This is accomplished past a process known as enrichment. Considering the isotopes of uranium are identical chemically, the enrichment procedure exploits the slight deviation in their masses. Uranium enriched to greater than twenty percent uranium-235 is called highly enriched. Nuclear weapons typically utilise a concentration of more xc percentage uranium-235.

iv.2.1 Uranium-235 needed to make a weapon

15 kilograms: weight of a solid sphere of 100 percent uranium-235 just large enough to achieve a disquisitional mass with a beryllium reflector. Bore of such a sphere: 4.48 in (11.iv cm). Diameter of a regulation softball: 3.82 in (9.7 cm).
16 kilograms: amount needed for an Iraqi bomb blueprint plant by United nations inspectors.
50 kilograms: weight of a solid sphere of 100 per centum uranium-235 but big enough to achieve a critical mass without a reflector. Diameter of such a sphere: 6.74 in (17.two cm), comparable to an average "honeydew" melon.
60 kilograms: reported amount used in Hiroshima bomb "Little Boy."

4.2.2 Various methods used to enrich uranium

Electromagnetic Isotope Separation (EMIS)
In this process, uranium atoms are ionized (given an electrical charge) and then sent in a stream by powerful magnets. The heavier uranium-238 atoms are deflected less in their trajectory than the lighter uranium-235 atoms by the magnetic field, and so the isotopes divide and tin can be captured by collectors. The process is repeated until a high concentration of uranium-235 is achieved. An American version of the EMIS process, featuring "calutrons," was used in the Manhattan Project. EMIS was also used in Iraq's illicit endeavor to enrich uranium.
Gaseous Diffusion
In this process, gaseous uranium hexafluoride (UF6) flows through a porous membrane of nickel or aluminum oxide. Lighter molecules of uranium-235 within the UF6 diffuse through the porous barrier at a faster rate than the heavier molecules of uranium-238. Considering the difference in velocities between the two isotopes is minor, the process must be repeated thousands of times to achieve weapon-usable uranium-235. The The states used this enrichment method to fuel its early on fission bombs, and China used it to build its first nuclear weapons in the 1950s and 1960s.
Gas Centrifuge
Gaseous UF6 is fed into a cylindrical rotor that spins at a high speed inside an evacuated casing. Centrifugal forces cause the heavier uranium-238 to move closer to the outer wall than the lighter uranium-235, thus partially separating the isotopes. This separation is increased past a relatively ho-hum axial countercurrent flow of gas within the centrifuge that concentrates enriched gas at one end and depleted gas at the other. Numerous repetitions of the process, employing thousands of centrifuges in arrangements chosen cascades, are needed to concentrate the uranium-235 to weapon-grade. Islamic republic of pakistan used gas centrifuges to enrich the uranium for its start nuclear weapon, and both Iraq and Iran take built gas centrifuges in illicit programs hidden from international inspectors.
Aerodynamic Processes
In the Becker nozzle process a mixture of gaseous UF6 and helium is compressed and then directed forth a curved wall at loftier speed. The heavier uranium-238-begetting molecules move preferentially out to the wall relative to those containing uranium-235. At the terminate of the deflection, the gas jet is split by a knife edge into a light fraction and a heavy fraction, which are withdrawn separately.
Diminutive Vapor Laser Isotope Separation (AVLIS)
The AVLIS process uses dye lasers tuned and then that only the uranium-235 atoms blot the laser light. As the uranium-235 atom absorbs the light, its electrons are excited to a higher energy state. When enough energy is captivated, a uranium-235 cantlet will eject an electron and become a positively charged ion. The uranium-235 ions may and so be deflected by an electrostatic field to a product collector. The uranium-238 atoms remain neutral and are not collected.
Molecular Laser Isotope Separation (MLIS)
The MLIS separation process consists of two steps. In the first, UF6 is excited by an infrared laser system, which selectively excites the molecules begetting uranium-235, leaving the molecules bearing uranium-238 unexcited. In the second pace, photons from a second laser system (infrared or ultraviolet) preferentially dissociate the excited uranium-235 to course uranium pentafluoride molecules bearing uranium-235 and costless fluorine atoms. The uranium-235 then precipitates equally a pulverisation that can be filtered from the gas stream.
Thermal Diffusion
Thermal diffusion uses the transfer of heat across a sparse liquid or gas to accomplish isotope separation. By cooling a vertical film on ane side and heating it on the other, the resultant convection currents volition produce an upward flow along the hot surface and a downward menstruum along the cold surface. Under these conditions, the lighter uranium-235 molecules will diffuse toward the common cold surface. These two deviating motions combined with the convection currents will cause the lighter uranium-235 molecules to concentrate at the top of the film and the heavier uranium-238 molecules to concentrate at the bottom of the film.

4.2.three Critical equipment needed to enrich uranium
Most of the enrichment processes also crave that the natural uranium be converted into a gaseous form prior to enrichment, typically uranium hexafluoride (UF6). Thus, a separate chemic processing plant must be constructed to convert the uranium into gaseous form.

Disquisitional items:

High-strength aluminum, maraging steel, or graphite to make centrifuge rotors.
Spin forming or flow forming machines.
Filament winding machines.
Balancing machines.
Sintered nickel for gaseous diffusion barriers.
High-purity fluorine.
Special valves, seals and pipage lining material for handling UF6.
Pumps for moving uranium hexafluoride at loftier pressure.
Laser isotope separation equipment.

4.three Weapon design and production
In addition to the plutonium or highly enriched uranium needed to fuel a weapon, other components are required to accomplish a successful detonation. These typically require high-precision manufacturing, which can be accomplished only with specialized equipment or materials. Such components also require specialized testing equipment. Selected components and equipment are listed below.

Firing sets: containing high-energy, low impedance capacitor banks, and high current, high-speed switches (thyratrons, krytrons, sprytrons).
High explosives: substances or mixtures known equally HMX, RDX, TATB, HNS.
Loftier-speed recording devices (oscilloscopes, streak cameras) and high-speed photography, wink x-rays and mechanical-electronic diagnostics such as pin-domes.
Reflector material, such every bit glucinium and its alloys.
Vacuum furnaces for casting uranium and plutonium.
Neutron generators.

5. Effects of nuclear weapons

The energy released by a nuclear explosion comes in several forms: pressure from the boom, thermal radiation, nuclear radiations, and an electromagnetic pulse. The damage inflicted by the various effects depends upon the size and blazon of the explosion.

5.i Blast
A large portion of the impairment acquired past a nuclear weapon is from the nail. The detonation produces a desperate increment in atmospheric force per unit area and severe transient winds. Due to the extreme temperature and pressure level created, a massive daze wave is promulgated outward from the detonation point. The loftier "overpressure" destroys buildings, and the wind causes fatal collisions betwixt people and nearby objects.

five.2 Thermal radiations
The intense heat from a nuclear explosion causes burns to homo peel and a temporary condition called "flashblindness." The maximum temperature accomplished by a fission weapon is several tens of million degrees. A standard chemic high-explosive produces simply 5,000 degrees centigrade (9,000 degrees Fahrenheit). A i megaton explosion can produce tertiary degree burns (which destroy peel tissue) at a distance of five miles. The extent to which burns are inflicted depends on conditions atmospheric condition. The heat from the explosion can also ignite fires and under some conditions tin can produce a "firestorm." Thermal effects predominate in weapons in the megaton range.

5.3 Nuclear radiation
The nuclear radiation resulting from a nuclear explosion can be divided into two categories: initial and residuum. The initial radiation consists of neutrons and gamma rays, which tin travel great distances, penetrate considerable thicknesses of cloth, and inflict fatal damage on human tissue. Initial radiations tin be intense only has a limited range. For large nuclear weapons, the range of initial radiation is less than the range of lethal blast and thermal furnishings. For small weapons, direct radiation may be the lethal effect with the greatest range.

While there is some controversy about the effect of nuclear radiations on the human being body, it is estimated that an exposure of 600 rem or greater within one week will consequence in a xc% chance of expiry inside a few weeks. For a 1 kiloton nail, initial radiations levels of at least 600 rem extend out 0.eight km from the nail. For a ane megaton surface blast, the 600 rem exposure radius would be about two.7 km.

Residual radiations is often termed fallout, and it tin bear upon both the immediate nail area and areas farther away. Fallout is caused past particles that are scooped upwardly when the nuclear fireball touches the world. If the nuclear burst is high in the air, fallout is minimal. The scooped-upwards particles tin be carried some distance by the wind before falling back to globe, and their concentration in any 1 location depends on local atmospheric condition conditions. Fallout tin crusade astringent contamination to soil, vegetation and groundwater. A steady northwest wind, for example, blowing beyond a one megaton ground burst in Detroit, could carry plenty residual radiation to inflict acute radiation sickness to exposed persons in Cleveland. The remainder radiations decays over time, by a gene of 10 subsequently seven hours, a factor of 100 after 49 hours and a cistron of 1,000 after ii weeks. Depending on the weather condition of the boom, radiations levels tin can persist above permissible peace time levels for months or years in areas effectually the explosion.

v.4 Overall furnishings
Taking into account the effects of the total energy released in a nuclear explosion, Table 1 summarizes the effective lethal radii for weapons of various yields. The effective lethal radius is defined as the radius at which the fatality rate is approximately 50% in a typical urban area. This can likewise exist estimated as a ring inside which the hateful lethal overpressure is approximately five pounds per foursquare inch. This is the amount of pressure needed to plummet a typical residence.

Table 1 - Effective lethal radii for nuclear weapons
Weapon Yield Effective Lethal Radius
1 kiloton 0.7 km (ane.5 km2 area)
20 kilotons 1.8 km (10 km2 surface area)
1 megaton 7-xiii km (150-600 km2 area)

*Map figure: Lethal radii for weapons of various yields detonated in Washington, D.C.*

v.5 A Flop over Washington, D.C.
Imagine that a nuclear weapon is detonated in Washington, D.C. at an optimum burst height over the intersection of Connecticut Ave N.W. and H Street N.Westward., which forms the northwest corner of Lafayette Park and lies approximately two blocks north of the White Business firm. Using the definition of lethal radius as the area within which the mean overpressure is five pounds per square inch, the lethal radius for such an event with weapons of various yields can exist calculated. Tabular array 2 and the map figure display the five pounds per foursquare inch radii for weapons with yields of one kiloton, 20 kiloton, 100 kiloton and one megaton.

Table 2 - Five psi radii for various yield nuclear weapons
Weapon Yield 5 psi radius (km)
one kiloton 0.69
xx kiloton ane.85
100 kiloton 3.19
one megaton 6.92

The radii given in Tabular array ii assume that the weapon detonates in air at the optimum height for creating damage. The bombs dropped on Hiroshima and Nagasaki, Japan, for case, exploded at a summit of approximately ane,650 anxiety. Buildings in Washington, DC are express to 160 feet. A weapon delivered in a vehicle, such equally a cargo van, would not detonate at the optimum height. Instead, it would be a "surface flare-up." For such an explosion the five psi radii given in Table 2 would be approximately 35% smaller. A surface burst would, on the other manus, create "fallout." This consists of particles of soil and debris propelled into the air by the fireball, which would occur at ground level. An air burst creates lilliputian fallout because the fireball does not affect the basis.

6. The first bombs

"Trinity": Globe'south outset nuclear explosion: July sixteen, 1945.
Location: Almost Alamogordo, New Mexico.
Yield: 21 kilotons.
Fissile cloth used: Plutonium-239.
Amount: 6.i kilograms.
Method of detonation: Implosion.
Amount of high-explosive wrapped effectually plutonium core: 2268 kilograms.
Method of production: Nuclear reactor at the Hanford Reservation.

"Footling Boy": First use of nuclear weapon in war: August 6, 1945.
Location: Hiroshima, Nippon.
Detonation height: approximately 1,650 feet.
Commitment machinery: Airdropped from B-29 bomber named Enola Gay.
Yield: 12.5 kilotons.
Fissile material used: Uranium-235.
Method of detonation: "Gun-type" device.
Method of product: "Calutron" electromagnetic isotope separation.

"Fatty Man": Second use of a nuclear weapon in war: Baronial ix, 1945.
Location: Nagasaki, Japan.
Detonation Height: approximately i,650 feet.
Delivery mechanism: Airdropped from B-29 bomber named Bockscar.
Yield: 22 kilotons.
Fissile textile used: Plutonium-239.
Method of Detonation: Implosion.
Corporeality used: half dozen.two kilograms.

"Ivy Mike": Showtime hydrogen flop tested: November 1, 1952.
Location: Elugelab Island, Enewetak Atoll.
Yield: 10.4 megatons.

Soviet Union

"Joe 1": First nuclear exam: August 29, 1949.
Location: Semipalatinsk, Kazakhstan.
Yield: 10-20 kilotons.
Fissile material used: Plutonium-239.
Method of detonation: Implosion.
Method of production: Reactor.

"Joe 4": Starting time thermonuclear test: Baronial 12, 1953.
Location: Possibly in Siberia.
Yield: 200-300 kilotons.

Great Uk

"Hurricane": First nuclear examination: October iii, 1952.
Location: Off Trimouille Island, Commonwealth of australia.
Yield: 25 kilotons.
Fissile cloth used: Plutonium-239.
Method of detonation: Implosion.
Method of production: Reactor.
Strange Help: United States.

"Grapple Y": Thought to exist the beginning two-step thermonuclear examination: April 28, 1958.
Location: Christmas Island.
Yield: 2 megatons.
Delivery Mechanism: Airdropped from a Valiant XD825 bomber.

France

"Gerboise Bleue": Beginning nuclear test: February xiii, 1960.
Location: Reggane Proving Grounds, Algeria.
Yield: lx-70 kilotons.
Fissile material used: Plutonium-239.
Method of detonation: Implosion.
Method of production: Reactor.

"Canopus": Starting time thermonuclear exam: August 24, 1968.
Location: Fangataufa Atoll.
Yield: 2.6 megatons.
Foreign assistance: Norway (heavy water to brand tritium).

China

"596": Offset nuclear test: Oct sixteen, 1964.
Location: Lop Nor.
Yield: 12.5-22 kilotons.
Fissile fabric used: Uranium-235.
Method of production: Gaseous diffusion.
Foreign assistance: Soviet Spousal relationship.

Starting time thermonuclear test: June 17, 1967.
Location: Lop Nor.
Yield: Approximately 3 megatons.
Commitment mechanism: Airdropped from a Hong 6 bomber.

Israel

Estimated date when kickoff flop was produced: Late 1966.
Fissile fabric: Plutonium.
Method of product: Dimona reactor imported from France and operated with heavy water supplied past Norway.
Probably conducted a 2-3 kiloton nuclear test on September 22, 1979 in the South Atlantic Body of water in cooperation with Southward Africa.

India

Beginning nuclear examination: May xviii, 1974.
Location: Pokhran.
Yield: 2-15 kilotons.
Fissile material used: Plutonium-239.
Method of production: Cirus reactor supplied by Canada and operated with heavy water supplied by the United States.

2nd nuclear exam "Shakti 1": May eleven, 1998.
Location: Pokhran.
Yield: 10-15 kilotons.

Third nuclear test (claimed): May 13, 1998.
Yield: India claimed it tested two nuclear bombs, with a combined yield of 0.8 kilotons; however, there is no seismic evidence of any nuclear explosion.

South Africa

Start device built: December 1982.
Full bombs built: Six.
Method of detonation: "Gun-blazon" device.
Fissile material used: Uranium-235.
Nuclear tests: None.

Dismantlement of the bomb program began in Nov 1989 and was completed in early September 1991, after which South Africa signed a comprehensive nuclear inspection agreement with the IAEA.

Pakistan

Estimated production of offset bomb: Belatedly 1987.
First nuclear test: May 28, 1998.
Location: Chagai Hills region.
Yield: nine-12 kilotons
Fissile material used: Uranium-235.
Method of production: Gas centrifuge technology smuggled from Europe.
Foreign aid: Prc (bomb pattern), Germany (uranium processing equipment).

Second nuclear examination: May 30, 1998.
Yield: 4-6 kilotons.

N Korea

First nuclear test: October ix, 2006.
Location: Near P'unggye-ri.
Yield: Less than 1 kiloton.
Fissile textile used: Plutonium-239.
Method of production: Graphite moderated reactor at Yongbyon.

Second nuclear test: May 25, 2009.
Yield: 2 kilotons.
Fissile cloth used:
Undetermined (allegedly Plutonium-239).

Third nuclear test: February 12, 2022.
Yield: three-7 kilotons.
Fissile material used: Undetermined.

Quaternary nuclear examination: Jan 6, 2022.
Yield: 6-10 kilotons.
Fissile material: Undetermined (allegedly included thermonuclear fuel).

Fifth nuclear exam: September ix, 2022.
Yield: 10-xx kilotons.
Fissile Cloth: Undetermined

Sixth nuclear exam: September iv, 2022.

Yield: 120-160 kilotons.

Fissile Cloth: Undetermined (included thermonuclear fuel and peradventure a consummate second phase).