Precision half-life measurement of the 4-fold forbidden {beta} decay of {sup 50}V

Journal Article · Sun May 15 00:00:00 EDT 2011 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.83.054322· OSTI ID:21502469

Dombrowski, H; Neumaier, S ^[1]; Zuber, K ^[2]

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1. Physikalisch-Technische Bundesanstalt (PTB), D-38116 Braunschweig (Germany)
2. Institut fuer Kern- und Teilchenphysik, Technische Universitaet Dresden, D-01069 Dresden (Germany)

A sensitive search of the 4-fold forbidden nonunique decay of {sup 50}V has been performed. A total mass measuring time product of 186 kg d has been accumulated. A reliable half-life value with the highest precision so far of (2.29{+-}0.25)x10{sup 17} years of the electron capture decay of {sup 50}V into the first excited state of {sup 50}Ti could be obtained. A photon emission line following the {beta} decay into the first excited state of {sup 50}Cr could not be observed, resulting in a lower limit on the half-life of the {beta}-decay branch of 1.7x10{sup 18} years. This is not in good agreement with a claimed observation of this decay branch published in 1989.

• OSTI ID: 21502469
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 83, Issue 5; Other Information: DOI: 10.1103/PhysRevC.83.054322; (c) 2011 American Institute of Physics; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCURACY
CHROMIUM 50
ELECTRON CAPTURE DECAY
HALF-LIFE
MASS
NUCLEAR DECAY
PHOTON EMISSION
TITANIUM 50
VANADIUM 50
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHROMIUM ISOTOPES
DECAY
ELECTRON CAPTURE RADIOISOTOPES
EMISSION
EVEN-EVEN NUCLEI
INTERMEDIATE MASS NUCLEI
ISOTOPES
NUCLEI
ODD-ODD NUCLEI
RADIOISOTOPES
STABLE ISOTOPES
TITANIUM ISOTOPES
VANADIUM ISOTOPES
YEARS LIVING RADIOISOTOPES