1997/05/15 by E. Friedman, A. Gal, J. Mareš +1 · 15 citations
Physics and Astronomy · #Atomic and Molecular Physics #Atomic physics #Attenuation #Free space #Materials science #Momentum (technical analysis) #Nuclear physics #Nuclear physics research studies #Optics #Physics #Quantum Chromodynamics and Particle Interactions #Range (aeronautics) #Scattering #nucl-th
paper · pdf · doi:10.1016/s0375-9474(97)00484-3
published in Nuclear Physics A 625(1-2), 272-286 (Elsevier BV) · 23 pages, RevTeX, 2 postscript figures, submitted Nucl. Phys. A
arxiv created 1997/05/15 · openalex publication_date 1997/10/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Total and reaction cross sections are derived self consistently from the attenuation cross sections measured in transmission experiments at the AGS for K+ on Li6, C, Si and Ca in the momentum range of 500-700 MeV/c by using a Vopt=teff(rho)rho optical potential. Self consistency requires, for the KN in-medium t matrix, that Im teff(rho) increases linearly with the average nuclear density in excess of a threshold value of 0.088+-0.004 fm-3. The density dependence of Re teff(rho) is studied phenomenologically, and also applying a relativistic mean field approach, by fitting the integral cross sections. The real part of the optical potential is found to be systematically less repulsive with increasing energy than expected from the free-space repulsive KN interaction. When the elastic scattering data for Li6 and C at 715 MeV/c are included in the analysis, a tendency of Re Vopt to generate an attractive pocket at the nuclear surface is observed.