Calculation of the level density parameter using semi-classical approach

CANBULA B., BABACAN H.

Nuclear Physics A, cilt.858, sa.1, ss.32-47, 2011 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 858 Sayı: 1
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1016/j.nuclphysa.2011.03.009
  • Dergi Adı: Nuclear Physics A
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.32-47
  • Anahtar Kelimeler: Level density, Semi-classical level density, Harmonic oscillator, Coulomb potential
  • Manisa Celal Bayar Üniversitesi Adresli: Evet

Özet

The level density parameters (level density parameter a and energy shift δ) for back-shifted Fermi gas model have been determined for 1136 nuclei for which complete level scheme is available. Level density parameter is calculated by using the semi-classical single particle level density, which can be obtained analytically through spherical harmonic oscillator potential. This method also enables us to analyze the Coulomb potential's effect on the level density parameter. The dependence of this parameter on energy has been also investigated. Another parameter, δ, is determined by fitting of the experimental level scheme and the average resonance spacings for 289 nuclei. Only level scheme is used for optimization procedure for remaining 847 nuclei. Level densities for some nuclei have been calculated by using these parameter values. Obtained results have been compared with the experimental level scheme and the resonance spacing data. © 2011 Elsevier B.V.