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$\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.
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Contributor : Emmanuelle Vernay Connect in order to contact the contributor
Submitted on : Friday, April 28, 2017 - 10:04:47 AM
Last modification on : Tuesday, May 11, 2021 - 11:36:50 AM





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. pp.547-552 ⟨10.5506/APhysPolB.48.547⟩. ⟨in2p3-01515750⟩



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