Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2003-08-15
Physics
Nuclear Physics
Nuclear Theory
24 pages, 6 figures
Scientific paper
10.1103/PhysRevC.68.054319
We examine isovector and isoscalar proton-neutron pairing correlations for the ground state of even-even Ge isotopes with mass number A=64-76 within the deformed BCS approach. For N=Z 64Ge the BCS solution with only T=0 proton-neutron pairs is found. For other nuclear systems (N>Z) a coexistence of a T=0 and T=1 pairs in the BCS wave function is observed. A problem of fixing of strengths of isoscalar and isovector pairing interactions is addressed. A dependence of number of like and unlike pairs in the BCS ground state on the difference between number of neutrons and protons is discussed. We found that for nuclei with N much bigger than Z the effect of proton-neutron pairing is small but not negligible.
Faessler Amand
Moustakidis Charal
Pacearescu Larisa
Simkovic Fedor
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