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Experimental level densities of atomic nuclei

Abstract : It is almost 80 years since Hans Bethe described the level density as a non-interacting gas of protons and neutrons. In all these years, experimental data were interpreted within this picture of a fermionic gas. However, the renewed interest of measuring level density using various techniques calls for a revision of this description. In particular, the wealth of nuclear level densities measured with the Oslo method favors the constant-temperature level density over the Fermi-gas picture. From the basis of experimental data, we demonstrate that nuclei exhibit a constant-temperature level density behavior for all mass regions and at least up to the neutron threshold.
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Contributor : Sophie Heurteau <>
Submitted on : Thursday, May 28, 2015 - 11:00:53 AM
Last modification on : Friday, December 18, 2020 - 2:16:05 PM

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M. Guttormsen, M. Aiche, F. L. Bello Garrote, L. A. Bernstein, D. L. Bleuel, et al.. Experimental level densities of atomic nuclei. European Physical Journal A, EDP Sciences, 2015, 51, pp.170. ⟨10.1140/epja/i2015-15170-4⟩. ⟨in2p3-01157547⟩



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