Delayed neutron precursors at masses 97-99 and 146-148

1 October 1983

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

Vol. 28 (4) , 1740-1751
https://doi.org/10.1103/physrevc.28.1740

Abstract

Delayed neutron emission probabilities,

P_{n}

, have been measured for

{}^{98, 99}{Sr}

{}^{97}Y^{g, m}

{}^{96}Y^{g}

{}^{99}Y

{}^{147}{Ba}

, and

{}^{147, 148}{La}

. This is the first reported measurement for

{}^{97}Y^{m}

. Upper limits to the

P_{n}

for

{}^{97}{Sr}

{}^{146, 148}{Ba}

, and

{}^{146}{La}

were established. The

P_{n}

values measured here are much smaller than a set of published measurements. Calculations of total delayed neutron yields from fission are consistent with experimental measurements of total delayed neutron yields except for fast neutron fission of

{}^{238}U

. Improved half-lives are reported for 13 of the Rb, Sr. Y, Cs, Ba, and La nuclides at masses 97-99 and 146-148.

Keywords

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