Q-value of the superallowed β decay of 62Ga

Masses of the radioactive isotopes 62Ga, 62Zn and 62Cu have been measured at the JYFLTRAP facility with a relative precision of better than 1.8×10−8. A QEC value of (9181.07±0.54) keV for the superallowed decay of 62Ga is obtained from the measured cyclotron frequency ratios of 62Ga62Zn, 62Ga62Ni and 62Zn62Ni 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.