Decays of odd-oddN-Z=2 nuclei above ${}^{100}{Sn}$ : The observation of proton radioactivity from ${}^{112}{Cs}$

21 March 1994

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

Vol. 72 (12) , 1798-1801
https://doi.org/10.1103/physrevlett.72.1798

Abstract

The discovery of the new proton emitter

{}^{112}{Cs}

with an energy of 807±7 keV and a half-life of 500±100 μs is reported. WKB half-life calculations indicate

d_{5 / 2}

proton emission with a low spectroscopic factor comparable to values for

{}^{109}I

and

{}^{113}{Cs}

. This behavior is consistent with the onset of deformation in this region. The odd-odd nuclides

{}^{112}{Cs}

and

{}^{108}I

have significantly lower

Q_{p}

values than the corresponding isotopes lying closer to stability, which is attributed to strong pairing forces between the odd nucleons. The half-life of

{}^{113}{Cs}

has been measured with improved precision as 17±2 μs.

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Decays of odd-oddN-Z=2 nuclei aboveSn100: The observation of proton radioactivity fromCs112

Abstract

Decays of odd-oddN-Z=2 nuclei above ${}^{100}{Sn}$ : The observation of proton radioactivity from ${}^{112}{Cs}$