Investigation of the 50V electron-capture to the 2+ 1553.8 keV level of 50Ti and search for β− decay of 50V to the 2+ 783.3 keV level of 50Cr (both those decays are fourfold forbidden with ΔJΔπ=4+) have been performed using a vanadium sample of natural isotopic abundance with mass of 955 g. The measurements were conducted with the help of an ultra low-background HPGe-detector system located 225 m underground in the laboratory HADES (Belgium). The measured value of the half-life of 50V for electron capture was T1/2EC=(2.77−0.19+0.20)×1017 yr. The β−-decay branch was not detected and the corresponding lower bound of the half-life was T1/2β≥8.9×1018 yr at the 90\% confidence level.
@article{arxiv.2008.02751,
title = {Decay scheme of 50V},
author = {F. A. Danevich and M. Hult and D. V. Kasperovych and V. R. Klavdiienko and G. Lutter and G. Marissens and O. G. Polischuk and V. I. Tretyak},
journal= {arXiv preprint arXiv:2008.02751},
year = {2020}
}