24 June 1943
Cyclotron Plutonium Fission Rate
Using cyclotron-produced plutonium, Segre measures a spontaneous-fission rate low enough to keep the plutonium gun concept viable at this stage.
Historical place archive
Browse historical events and people recorded at Los Alamos in Italy. The records below are rendered directly from the World History Database into this page's initial HTML.
Using cyclotron-produced plutonium, Segre measures a spontaneous-fission rate low enough to keep the plutonium gun concept viable at this stage.
Segre measures a lower-than-expected spontaneous-fission rate for uranium-235, easing design requirements for the uranium gun weapon.
Measurements of reactor-produced plutonium show a spontaneous-fission rate far above expectations because of plutonium-240 contamination, threatening the gun method.
Provenance
These entries are generated from stored World History Database records whose country and place fields match Italy and Los Alamos. Names, dates, event labels and descriptions are reviewed and normalised as the database develops. Historical place names may not match modern administrative boundaries.
This database is a research index. For formal scholarly citation, verify individual claims against appropriate primary, archival, academic or specialist sources.