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Atomic mass difference between /sup 135/Ce and /sup 135/La

Journal Article · · Phys. Rev., C; (United States)
Electron capture decay of /sup 135/Ce (17.6 h) has been used to determine the mass difference between /sup 135/Ce and /sup 135/La. The main component of the positrons (0.36%/decay) was found to feed the 300 keV level in /sup 135/La with triple coincidences between two annihilation radiations and ..gamma.. rays. The end-point energy of the ..beta../sup +/ main component was determined to be 694 +- 13 keV. Thus the mass difference between /sup 135/Ce and /sup 135/La is determined to be 2016 +- 13 keV. No anomaly is found for the EC/..beta../sup +/ ratio.
Research Organization:
Department of Applied Physics, Tokyo Institute of Technology, Ohokayama, Meguro-ku, Tokyo, Japan
OSTI ID:
6521853
Journal Information:
Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 23:4; ISSN PRVCA
Country of Publication:
United States
Language:
English

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