首页|Nuclear Fermi momenta of H-2, Al-27 and Fe-56 from an analysis of CLAS data
Nuclear Fermi momenta of H-2, Al-27 and Fe-56 from an analysis of CLAS data
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NSTL
Elsevier
Nuclear Fermi momentum is a basic property of a nucleus where many nucleons dwell. However, in experiments only the nuclear Fermi momenta of just a few nuclei are measured using quasielastic electron scattering on the nuclear targets so far. Particularly, we still do not know experimentally the Fermi momentum of the lightest nucleon composite - the deuteron. In this paper, we apply both gaussian distribution and Cauchy distribution to describe the quasielastic peak in the cross section of electron-nucleus scattering. The dip of the cross-section ratio at about xB = 1 is explained with the nuclear Fermi momentum. By performing the least-square fits to the published CLAS data in the narrow kinematic region of quasielastic scattering, we obtain the nuclear Fermi momenta of H-2, Al-27 and Fe-56, which are 116 +/- 7 MeV/c, 232 +/- 27 MeV/c, and 244 +/- 28 MeV/c respectively. The extracted nuclear Fermi momenta are compared to the simple calculations based on Fermi gas model, and the consistencies are found.(c) 2021 Elsevier B.V. All rights reserved.
NSTL
Elsevier
