Joe 4
Sign in to saveRDS-6s (; American codename: "Joe 4") was the first Soviet test of a boosted fission weapon that occurred on August 12, 1953, that detonated with an energy equivalent to 400 kilotons of TNT.
Key facts
- Nuclear weapons test.name
- Joe-4 RDS-6s
- Nuclear weapons test.picture
- RDS-6s fireball.jpg
- Nuclear weapons test.country
- Soviet Union
- Nuclear weapons test.test_site
- Semipalatinsk Test Site, Kazakh SSR
- Nuclear weapons test.period
- August 1953
- Nuclear weapons test.number_of_tests
- 1
- Nuclear weapons test.test_type
- Atmospheric test
- Nuclear weapons test.device_type
- Boosted fission
- Nuclear weapons test.max_yield
- Total yield
- Nuclear weapons test.previous_test
- RDS-3
- Nuclear weapons test.next_test
- RDS-4
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Wikidata facts
Show 1 more fact
- explosive energy equivalent
- 400
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- Description
- See also
- References
- Citations
- Footnotes
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- External links
RDS-6s (; American codename: "Joe 4") was the first Soviet test of a boosted fission weapon that occurred on August 12, 1953, that detonated with an energy equivalent to 400 kilotons of TNT.
RDS-6 utilized a scheme in which fission and fusion fuel (lithium-6 deuteride) were "layered", a design known as the Sloika (, named after a type of layered puff pastry) or the so-called layer cake design, model in the Soviet Union. A ten-fold increase in explosive power was achieved by a combination of fusion and fission, yet it was still 26 times less powerful than the Ivy Mike device tested by the US in 1952. A similar design was earlier theorized by Edward Teller, but never tested by the US, as the "Alarm Clock".
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