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 62Ga{single bond}62Zn, 62Ga{single bond}62Ni and 62Zn{single bond}62Ni ions. The resulting F t-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. © 2006 Elsevier B.V. All rights reserved.