New Nuclides ${}^{19}{Na}$ and ${}^{23}{Al}$ Observed Via The ( $p, {}^{6}{He}$ ) reaction

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24 March 1969

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 22 (12) , 612-615
https://doi.org/10.1103/physrevlett.22.612

Abstract

By employing the reactions

{}^{24}{Mg} (p, {}^{6}{He}) {}^{19}{Na}

and

{}^{28}{Si} (p, {}^{6}{He}) {}^{23}{Al}

[

\frac{d σ}{d Ω} \sim 100

nb/sr], the mass excesses of

{}^{19}{Na}

and

{}^{23}{Al}

are found to be 12.974 ± 0.070 and 6.766 ± 0.080 MeV, respectively [

{}^{12}C

= 0]. Since

{}^{19}{Na}

is determined to be proton unstable,

{}^{23}{Al}

should be the lightest, nucleon-stable member of the

A = 4 n + 3

,

T_{Z} = - \frac{3}{2}

mass series.

This publication has 8 references indexed in Scilit:

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