Pygmy and giant dipole response function in neutron rich nuclei at finite temperature

ŞAHİN E., BOZKURT K., ŞİRİN M.

7th International Conference of the Balkan Physical Union, Alexandroupoli, Yunanistan, 9 - 13 Eylül 2009, cilt.1203, ss.11-16 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası: 1203
  • Doi Numarası: 10.1063/1.3322339
  • Basıldığı Şehir: Alexandroupoli
  • Basıldığı Ülke: Yunanistan
  • Sayfa Sayıları: ss.11-16
  • Anahtar Kelimeler: Finite temperature, Hartree-Fock+mean-field, Pgymy and giant dipole resonance, Skyrme interactions
  • Marmara Üniversitesi Adresli: Hayır

Özet

We investigate pygmy and giant dipole resonance (PDR-GDR) for the case of neutron rich soft nuclei 68Ni and heavy nuclei 208Pb using effective nucleon-nucleon Skyrme interactions SLy7 and KDEO at finite temperature. We use the mean-field theory (HF) and employ the random phase approximaton (RPA) in a coordinate space. We then compare the PDR calculations for the different Skyrme interactions with their experimental results. We find that the PDR and GDR strength distribution depends sensitively on temperature, and especially for 68Ni the collective effects almost disappear at T=4 MeV. © 2009 American Institute of Physics.