Use of Blocking in Crystals to Study the Lifetime for Fission ofBY 12-MeV Protons
- 17 June 1968
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 20 (25) , 1449-1451
- https://doi.org/10.1103/physrevlett.20.1449
Abstract
Plastic detectors were used to observe angular distributions of fission fragments emerging from a U single crystal. In fission induced by thermal neutrons and by 12-MeV protons, characteristic blocking patterns were observed, showing strong attenuations along major crystal axes. This shows that fission occurred while the nuclei were within 0.1 Å of a lattice site and indicates that the total lifetime in 12-MeV proton fission is less than 2× sec.
Keywords
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