Free energy and criticality in the nucleon pair breaking process

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dc.creatorGuttormsen, M.
dc.creatorChankova, R.
dc.creatorHjorth-Jensen, M.
dc.creatorRekstad, J.
dc.creatorSiem, S.
dc.creatorSchiller, A.
dc.creatorDean, D. J.
dc.date2002-09-19
dc.date2003-07-29
dc.date.accessioned2026-07-07T05:36:58Z
dc.date.available2026-07-07T05:36:58Z
dc.descriptionExperimental level densities for 171,172Yb, 166,167Er, 161,162Dy, and 148,149Sm are analyzed within the microcanonical ensemble. In the even isotopes at excitation energies E < 2 MeV, the Helmholtz free energy F signals the transition from zero to two quasiparticles. For E > 2 MeV, the odd and even isotopes reveal a surprisingly constant F at a critical temperature Tc of appr. 0.5 MeV, indicating the continuous melting of nucleon Cooper pairs as function of excitation energy.
dc.description11 pages, including 6 figures, to be published in Physical Review C
dc.identifierhttps://arxiv.org/abs/nucl-ex/0209013
dc.identifierhttp://arxiv.org/abs/nucl-ex/0209013
dc.identifierPhys.Rev. C68 (2003) 034311
dc.identifierdoi:10.1103/PhysRevC.68.034311
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/81166
dc.subjectNuclear Experiment
dc.titleFree energy and criticality in the nucleon pair breaking process
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