$\beta $ Decay as a New Probe for the Low-energy E1 Strength

Abstract : In this contribution, it is evaluated whether high Q-value β decays from mothers with low ground-state spin are suitable to probe the structure of 1− levels associated with the pygmy dipole response. A comparison of data from the exemplary 136I →136Xe β decay and the 136Xe(γ,γ′) reaction reveals that some 1− levels are populated in both reactions but with a different pattern. An investigation within the microscopic quasiparticle phonon model shows that the pattern is related to the population of different parts of the wave functions of these 1− levels establishing β decay as a novel probe.
Type de document :
Communication dans un congrès
Zakopane Conference on Nuclear Physics “Extremes of the Nuclear Landscape”, Aug 2016, Zakopane, Poland. Acta Physica Polonica B, 48 (3), pp.547-552 2017, 〈https://zakopane2016.ifj.edu.pl/generalInfo.html〉. 〈10.5506/APhysPolB.48.547〉
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Contributeur : Emmanuelle Vernay <>
Soumis le : vendredi 28 avril 2017 - 10:04:47
Dernière modification le : lundi 9 avril 2018 - 12:22:10

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M. Scheck, S. Mishev, V. Ponomarev, O. Agar, T. Beck, et al.. $\beta $ Decay as a New Probe for the Low-energy E1 Strength. Zakopane Conference on Nuclear Physics “Extremes of the Nuclear Landscape”, Aug 2016, Zakopane, Poland. Acta Physica Polonica B, 48 (3), pp.547-552 2017, 〈https://zakopane2016.ifj.edu.pl/generalInfo.html〉. 〈10.5506/APhysPolB.48.547〉. 〈in2p3-01515750〉

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