Effective mass and level-density parameter in nuclei at finite temperature |
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| Institution: | 1. Department of Physics, University of Padova, I-35131 Padua, Italy;2. INFN, Laboratori Nazionali di Legnaro, Legnaro, Italy;3. The Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, DK-2100 Copenhagen, Denmark;4. Sektion Physik der Universität München, Am Coulombwall 1, D-8046 Garching, Fed. Rep. Germany;1. School of Physics and Optoelectronic Engineering, Anhui University, Hefei 230601, China;2. School of Mechanics and Photoelectric Physics, Anhui University of Science and Technology, Huainan 232001, China;1. Power Systems Laboratory, School of Electrical and Computer Engineering, Aristotle University of Thessaloniki, Thessaloniki, Greece;2. Power Systems Laboratory, Department of Electrical and Computer Engineering, Democritus University of Thrace, Xanthi, Greece;3. Cablel® Hellenic Cables S.A., Viohalco Group, Sousaki Korinthias, Korinthos, Greece;1. State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China;2. Department of Physics, University of Stellenbosch, Stellenbosch, South Africa;3. Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502, Japan |
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| Abstract: | The temperature dependence of the effective mass in finite nuclei is investigated in the framework of the surface coupling model. The characteristics enhancement of this quantity at the Fermi energy is found to disappear at temperature values of the order of 4 MeV in 208Pb. As a consequence, the level-density parameter should decrease, in agreement with recent empirical data. |
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