Half-life of Pu228 and α decay of Np228

K. Nishio, H. Ikezoe, S. Mitsuoka, K. Satou, and C. J. Lin
Phys. Rev. C 68, 064305 – Published 11 December 2003

Abstract

Two α-decay chains starting from Pu228 produced in the reaction of S34+Pt198 were observed, and the half-life was measured to be 1.10.5+2.0s. The half-life follows the Geiger-Nuttall curve for even-even Pu isotopes, which shows that α decay is the dominant decay mode. In addition, five α-decay events of Np228 were observed for the first time. The evaporation residue cross sections of Pu228, Np228, and U225 are reproduced by a statistical model calculation.

  • Figure
  • Figure
  • Received 17 April 2003

DOI:https://doi.org/10.1103/PhysRevC.68.064305

©2003 American Physical Society

Authors & Affiliations

K. Nishio1, H. Ikezoe1, S. Mitsuoka1, K. Satou1, and C. J. Lin1,2

  • 1Advanced Science Research Center, Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan
  • 2China Institute of Atomic Energy, Beijing 102413, China

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Vol. 68, Iss. 6 — December 2003

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