<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>β</mml:mi></mml:math>-delayed fission and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>α</mml:mi></mml:math>decay of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">At</mml:mi><mml:mprescripts/><mml:none/><mml:mn>196</mml:mn></mml:mmultiscripts></mml:math>

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Published
2016-09-08
Resource Type
journal article
Rights Information
  • http://creativecommons.org/licenses/by/3.0/
DOI
  • 10.1103/physrevc.94.034308
Publisher
American Physical Society (APS)

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Description

A nuclear-decay spectroscopy study of the neutron-deficient isotope $^{196}\mathrm{At}$ is reported where an isotopically pure beam was produced using the selective Resonance Ionization Laser Ion Source and On-Line Isotope Mass Separator (CERN). The fine-structure $\ensuremath{\alpha}$ decay of $^{196}\mathrm{At}$ allowed the low-energy excited states in the daughter nucleus $^{192}\mathrm{Bi}$ to be investigated. A $\ensuremath{\beta}$-delayed fission study of $^{196}\mathrm{At}$ was also performed. A mixture of symmetric and asymmetric fission-fragment mass distributions of the daughter isotope $^{196}\mathrm{Po}$ (populated by $\ensuremath{\beta}$ decay of $^{196}\mathrm{At}$) was deduced based on the measured fission-fragment energies. A $\ensuremath{\beta}\text{DF}$ probability ${P}_{\ensuremath{\beta}\mathrm{DF}}(^{196}\mathrm{At})=9(1)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}$ was determined.

Journal

  • Physical Review C

    Physical Review C 94 (3), 034308-, 2016-09-08

    American Physical Society (APS)

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