Eur. Phys. J. A (2009) 42: 339-342
https://doi.org/10.1140/epja/i2008-10703-6

Regular Article - Experimental Physics

Q-value for the Fermi beta-decay of ⁴⁶V

¹ Physik Department E12, Technische Universität München, D85748, Garching, Germany
² Maier-Leibnitz-Laboratorium der Münchner Universitäten (MLL), D85748, Garching, Germany
³ Fakultät für Physik, Ludwig-Maximilians-Universität München, D85748, Garching, Germany

^* e-mail: thomas.faestermann@ph.tum.de

Received: 19 October 2008
Revised: 18 November 2008
Accepted: 27 November 2008
Published online: 22 January 2009

Abstract

By comparing the Q -values for the ⁴⁶Ti ( ³He , t ⁴⁶V and ⁴⁷Ti ( ³He , t ⁴⁷V reactions to the isobaric analogue states the Q -value for the superallowed Fermi decay of ⁴⁶V has been determined as Q _EC( ^46V ) = (7052.11±0.27) keV. The result is compatible with the values from two recent direct mass measurements but is at variance with the previously most precise reaction Q -value. As additional input quantity we have determined the neutron separation energy S _n( ^47Ti ) = (8880.51±0.25) keV.