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Half-lives and delayed neutron emission probabilities of short-lived Rb and Cs precursors

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Zeitschrift für Physik A Atoms and Nuclei

Abstract

Half-lives and delayed-neutron emission probabilities (P n ) of short-lived Rb and Cs precursors in the mass chains 94–98 and 143–147 were measured. Sources of isotope separated nuclides were obtained from the on-line mass-separator OSTIS installed at the Grenoble high-flux reactor.

A newP n -value of (25.4±3.2)% is given for the (214±30) ms147Cs; theP n -values of nine alkali precursor nuclides were redetermined: (2,730±20) ms94Rb with (9.7±0.5)%, (377 ±6)ms95Rb with (8.6±0.5)%, (197±5)ms96Rb with (12.5±0.9)%, (171±4) ms97Rb with (25.2±1.8)%, (114±13)ms98Rb with (18.4±2.9)%, (1,765±30)ms143Cs with (1.74 ±0.12)%, (1,000±10)ms144Cs with (2.95±0.25)%, (616±20) ms145Cs with (12.2±0.9)%, (325±10)ms146Cs with (13.2±0.8)%. The results are compared with the existing data, and theP n -values are discussed within some simple model predictions.

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Author notes

  1. K. D. Wünsch, G. Jung & R. Decker

    Present address: II. Physikalisches Institut der UniversitÄt Gie\en, Gie\en, Germany

Authors and Affiliations

  1. Département de Recherche Fondamentale, Laboratoire de Chimie Physique Nucléaire, Centre d'Etudes Nucléaires de Grenoble, Grenoble, France

    C. Ristori & J. CranÇon

  2. Institut Laue-Langevin, Grenoble, France

    K. D. Wünsch, G. Jung & R. Decker

  3. Institut für Kernchemie der UniversitÄt Mainz, Mainz, Germany

    K. -L. Kratz

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  1. C. Ristori
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  2. J. CranÇon
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  3. K. D. Wünsch
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  4. G. Jung
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  5. R. Decker
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  6. K. -L. Kratz
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Additional information

The authors wish to acknowledge helpful discussions with Profs. G. Herrmann and S.G. Prussin. We also would like to thank the Institut Laue-Langevin, Grenoble, and the Bundesministerium für Forschung und Technologie for financial support.

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Ristori, C., CranÇon, J., Wünsch, K.D. et al. Half-lives and delayed neutron emission probabilities of short-lived Rb and Cs precursors. Z Physik A 290, 311–318 (1979). https://doi.org/10.1007/BF01408548

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  • DOI: https://doi.org/10.1007/BF01408548

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