Word: fissionable
(lookup in dictionary)
(lookup stats)
Dates: during 1950-1959
Sort By: most recent first
(reverse)
...estimates of strontium yield from a given fission energy are low by a factor of four, due to the use of older figures; recent, more accurate figures were not available at the time the report was issued...
Ruggles and Kramish found that as far back as the 1920s, competent Soviet physicists were contributing to the birth of nuclear physics. In 1938, when the critical news came from Germany that neutrons make uranium atoms fission (split in two) to yield enormous energy, Russian scientists reacted as excitedly as their colleagues elsewhere, working with impressive skill to establish the same key facts which would decide whether large amounts of nuclear energy could be got from uranium...
...scientists decided that between one and three neutrons are produced per fission. Russian scientists settled on the figure of between two and four neutrons...
...Fissioning in the Subway. Another key question was whether uranium atoms ever fission spontaneously-an important factor in weighing the feasibility of practical bombmaking. Theorists said that spontaneous fission ought to take place, but excellent experimental men in the U.S. were unable for a considerable time to prove that it did. The first to prove it (in 1940) were two young Russians, Flerov and Petrzhak, who did their work (to protect their experiment from the intrusion of cosmic rays) in the depths of Moscow's ornate subway...
Slow-Falling Dust. Last week the Shunkotsu Maru reported radioactive dust from a third explosion that apparently took place on June 12 or 13. Analysis showed that it was also of the fission-fusion-fission type, but for some reason, perhaps small size or extremely high altitude, it did not stir up air or water waves strong enough to reach Japan. A small earth wave was detected on June 12, and a slightly stronger one on June...