The primary intention was to test Testing new , second-generation thermonuclear weapons .

Also tested Testing were fission devices intended to be used Using as primaries for thermonuclear weapons , and small tactical weapons for air defense Defending .

Fission , primarily `` fast '' fission of the natural uranium tamper surrounding Surrounding the fusion capsule , greatly increases Cause_change_of_position_on_a_scale the yield of thermonuclear devices , and constitutes the great majority of the fallout , as nuclear fusion is a relatively clean reaction .

nine nuclear explosions were initiated Process_start , culminating in the united kingdom becoming Becoming the third recognised possessor of thermonuclear weapons , and the restoration of the nuclear special relationship with the united states with the 1958 us-uk mutual defence Defending agreement .

the united kingdom atomic energy authority atomic weapons research Research establishment at aldermaston produced Manufacturing three designs : orange herald , a large boosted fission weapon ; green bamboo , an interim thermonuclear design ; and green granite , a true thermonuclear weapon .

the united kingdom atomic energy authority atomic weapons research Research establishment at aldermaston produced Manufacturing three designs : orange herald , a large boosted fission weapon ; green bamboo , an interim thermonuclear design ; and green granite , a true thermonuclear weapon .

Despite its failure , the test was hailed Judgment_communication as a successful thermonuclear explosion Attack , and the government did not confirm Check or deny reports Reporting that the UK had become Becoming a third thermonuclear power .

Despite its failure , the test was hailed Judgment_communication as a successful thermonuclear explosion Attack , and the government did not confirm Check or deny reports Reporting that the UK had become Becoming a third thermonuclear power .

The design of Grapple Y was notably successful because much of its yield came from its thermonuclear reaction instead of fission of a heavy uranium-238 tamper , making it Causation a true hydrogen bomb Attack , and because its yield had been closely predicted—indicating that its designers understood Know what they were doing .

Castle Bravo was the first in a series of high-yield thermonuclear weapon design tests conducted Action by the United States at Bikini Atoll , Marshall Islands , as part of `` Operation Castle '' .

Detonated Attack on March 1 , 1954 , the device was the most powerful nuclear device detonated Attack by the United States and its first lithium deuteride fueled Supply thermonuclear weapon .

The blast incited international reaction over atmospheric thermonuclear testing Testing .

The tests achieved Achieve their main objective of giving Giving India the capability to build Building fission and thermonuclear weapons with yields up to 200 Kilotons .

In the 1950s , a series of large thermonuclear tests rendered Causation Bikini unfit for subsistence farming and fishing because of radioactive contamination .

The test Testing series was notable as containing the first time an Artillery Fired Atomic Projectile AFAP artillery shell was fired Use_firearm ( `` GRABLE '' Shot ) , the first two shots ( both fizzles ) by University of California Radiation Laboratory—Livermore ( now Lawrence Livermore National Laboratory ) , and for testing out Testing some of the thermonuclear components that would be used Using for the massive thermonuclear series of Operation Castle .

The test Testing series was notable as containing the first time an Artillery Fired Atomic Projectile AFAP artillery shell was fired Use_firearm ( `` GRABLE '' Shot ) , the first two shots ( both fizzles ) by University of California Radiation Laboratory—Livermore ( now Lawrence Livermore National Laboratory ) , and for testing out Testing some of the thermonuclear components that would be used Using for the massive thermonuclear series of Operation Castle .

One primary device ( RACER ) was tested Testing in thermonuclear system mockup assemblies of TX-14 , TX-16 , and TX-17/TX-24 , to examine Testing and evaluate the behaviour of radiation cases and the compression of the secondary geometries by the primary 's x-rays prior to full-scale testing Testing during Castle .

Following RACER 's dodgy performance , the COBRA primary was used Using in the emergency capability ALARM CLOCK , JUGHEAD , RUNT I , RUNT II thermonuclear devices , as well as in the SHRIMP device .

the aircraft was carrying Bringing four unk thermonuclear bombs on a cold war `` chrome dome '' alert mission over baffin bay when a cabin fire forced Request the crew to abandon GiveUp the aircraft before they could carry out Action an emergency landing Arriving at thule air base .