Fermi Beta Decay, $A > 40$ : The Masses of ${}^{42}{Sc}$ , ${}^{46}V$ , ${}^{50}{Mn}$ , and ${}^{54}{Co}$

The

Q

values for (

{}^{3}{He}

t

) reactions on

{}^{26}{Mg}

{}^{34}S

{}^{42}{Ca}

{}^{46}{Ti}

{}^{50}{Cr}

, and

{}^{54}{Fe}

have been measured relative to that for

{}^{27}{Al} ({}^{3}{He}, t) {}^{27}{Si}

. The results lead to significant deviations from

\dot{p}

reviously accepted values for the

β

-decay end-point energies of

{}^{42}{Sc}

{}^{46}V

, and

{}^{54}{Co}

. The new

ft

values for these transitions now agree with other known superallowed transitions (

A < 40

); only the decay of

{}^{50}{Mn}

remains anomalous. A limit is also set on the

Z^{2} α^{2}

radiative correction term.

This publication has 9 references indexed in Scilit:

Fermi Beta Decay,A>40: The Masses ofSc42,V46,Mn50, andCo54