Neutron elastic scattering on calcium isotopes from chiral nuclear optical potentials
- 주제(기타) Physics, Nuclear
- 설명문(일반) [Whitehead, T. R.; Holt, J. W.] Texas A&M Univ, Cyclotron Inst, College Stn, TX 77843 USA; [Whitehead, T. R.; Holt, J. W.] Texas A&M Univ, Dept Phys & Astron, College Stn, TX 77843 USA; [Lim, Y.] Max Planck Inst Kernphys, Saupfercheckweg 1, D-69117 Heidelberg, Germany; [Lim, Y.] Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany; [Lim, Y.] GSI Helmholtzzentrum Schwerionenforsch GmbH, ExtreMe Matter Inst EMMI, D-64291 Darmstadt, Germany
- 등재 SCIE, SCOPUS
- 발행기관 AMER PHYSICAL SOC
- 발행년도 2020
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000182485
- 본문언어 영어
- Published As http://dx.doi.org/10.1103/PhysRevC.101.064613
초록/요약
We formulate microscopic neutron-nucleus optical potentials from many-body perturbation theory based on chiral two- and three-body forces. The neutron self-energy is first calculated in homogeneous matter to second order in perturbation theory, which gives the central real and imaginary terms of the optical potential. The real spin-orbit term is calculated separately from the density matrix expansion using the same chiral interaction as in the self-energy. Finally, the full neutron-nucleus optical potential is derived within the improved local density approximation utilizing mean-field models consistent with the chiral nuclear force employed. We compare the results of the microscopic calculations to phenomenological models and experimental data up to projectile energies of E = 200 MeV. Experimental elastic differential scattering cross sections and vector analyzing powers are generally well reproduced by the chiral optical potential, but we find that total cross sections are overestimated at high energies.
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