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arXiv 0705.1419nucl-th
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交换通道中张量力对Hartree-Fock框架中23 F自旋轨道分裂的影响

Effect of the tensor force in the exchange channel on the spin-orbit splitting in 23F in the Hartree-Fock framework

Satoru Sugimoto, Hiroshi Toki, Kiyomi Ikeda

摘要:

在Hartree-Fock框架下,研究了交换通道中张量力作用下质子d轨道在23 F中的自旋轨道分裂($ls$ -splitting). 23 F在富中子核22 O周围还有一个质子。最近的一个实验表明,23 F中质子d轨道的ls分裂比17 F中的减少。我们的计算表明,由于张量力,23 F中的ls分裂减小了大约几MeV。这种效应来自于价质子与0 d ~(5/2)轨道上被占中子之间通过张量力的相互作用,使~(23)F的ls分裂更接近于实验数据。

英文摘要:

We study the spin-orbit splitting ($ls$-splitting) for the proton d-orbits in 23F in the Hartree-Fock framework with the tensor force in the exchange channel. 23F has one more proton around the neutron-rich nucleus 22O. A recent experiment indicates that the ls-splitting for the proton d-orbits in 23F is reduced from that in 17F. Our calculation shows that the ls-splitting in 23F becomes smaller by about a few MeV due to the tensor force. This effect comes from the interaction between the valence proton and the occupied neutrons in the 0d5/2 orbit through the tensor force and makes the ls-splitting in 23F close to the experimental data.

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