Phys. Rev. Lett. 95, 032502 (2005) [4 pages]Ground State Proton Radioactivity from 121Pr: When Was This Exotic Nuclear Decay Mode First Discovered?Received 12 April 2005; published 12 July 2005 Ground-state proton radioactivity has been identified from 121Pr. A transition with a proton energy of Ep=882(10) keV [Qp=900(10) keV] and half-life t1/2=10-3+6 ms has been observed and is assigned to the decay of a highly prolate deformed 3/2+ or 3/2- Nilsson state. The present result is found to be incompatible with a previously reported observation of ground-state proton radioactivity from 121Pr, which would have represented the discovery of this phenomenon. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.95.032502
DOI:
10.1103/PhysRevLett.95.032502
PACS:
21.10.Tg, 23.50.+z, 27.60.+j
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