Phys.Rev. C 97, 054607 (2018)

S.Hatakeyama, W.Horiuchi, A.Kohama

Nuclear surface diffuseness revealed in nucleon-nucleus diffraction

NUCLEAR REACTIONS ^120,132Sn, ²⁰⁸Pb(p, p), E=200, 325, 550, 800 MeV; calculated differential σ(θ), target two-parameter Fermi density distributions, scattering angles at the first peak position of σ(θ) using Glauber and black sphere (BS) model, and the spatial distribution of the scattering amplitude at the first and second peak of σ(θ) of one nucleon elastic scattering; deduced method for determining nuclear radii and diffuseness from first peak position and magnitude of differential σ(θ). ^{40,42,44,46,48,50,52,54,56,58,60}Ca, ^{56,58,60,62,64,66,68,70,72,74,76,78,80,82,84}Ni, ^{80,82,84,86,88,90,92,94,96,98,100,102,104,106,108,110,112,114,116,118,120}Zr, ^{100,102,104,106,108,110,112,114,116,118,120,122,124,126,128,130,132,134,136,138,140}Sn, ^{150,152,154,156,158,160,162,164,166,168,170,172,174,176,178,180,182,184,186,188,190,192,194,196,198,200}Yb, ^{182,184,186,188,190,192,194,196,198,200,202,204,206,208,210,212,214,216,218,220,222,224,226,228,230,232,234,236,238,240,242}Pb(p, p), (p, X), E=325, 550, 800 MeV; calculated rms radii, nuclear diffuseness of protons and neutrons from theoretical first peak position and amplitude of differential σ(θ) using HF+BCS method, total reaction cross sections by Glauber and black sphere (BS) models.

doi: 10.1103/PhysRevC.97.054607