Q-value of the superallowed beta decay of Ga-62

Details Q-value of the superallowed beta decay of Ga-62 Q-value of the superallowed beta decay of Ga-62

2005-12-07

arxiv.org/abs/nucl-ex/0512010v2

Phys.Lett. B636 (2006) 191-196

Physics

Nuclear Physics

Nuclear Experiment

12 pages, 3 figures, 2 tables, submitted to Phys. Lett. B. v2: added acknowledgements

Scientific paper

10.1016/j.physletb.2006.03.062

Masses of the radioactive isotopes 62Ga, 62Zn and 62Cu have been measured at the JYFLTRAP facility with a relative precision of better than 18 ppb. A Q_EC value of (9181.07 +- 0.54) keV for the superallowed decay of 62Ga is obtained from the measured cyclotron frequency ratios of 62Ga-62Zn, 62Ga-62Ni and 62Zn-62Ni ions. The resulting Ft-value supports the validity of the conserved vector current hypothesis (CVC). The mass excess values measured were (-51986.5 +-1.0) keV for 62Ga, (-61167.9 +- 0.9) keV for 62Zn and (-62787.2 +- 0.9) keV for 62Cu.

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