COMPTON SCATTERING CROSS SECTIONS FOR HEAVY ATOMS WITH ACCOUNT OF MANY-ELECTRON CORRELATIONS

M. Ya. Amusia, L. V. Chernysheva, Z. Felfli and A. Z. Msezane
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M. Ya. Amusia: Racah Institute of Physics, The Hebrew University, Jerusalem 91904, Israel;
L. V. Chernysheva: A. F. Ioffe Physical-Technical Institute, St. Petersburg 194021, Russia
Z. Felfli: Center for Theoretical Studies of Physical Systems, Clark Atlanta University, Atlanta, GA 30314, USA
A. Z. Msezane: Center for Theoretical Studies of Physical Systems, Clark Atlanta University, Atlanta, GA 30314, USA

Surface Review and Letters (SRL), 2002, vol. 09, issue 02, 1155-1160

Abstract: Compton ionization of krypton and xenon outer and intermediate subshells is investigated. Results are presented covering the energy transferred to the atoms from their ionization thresholds up to 30 Ry and momentum transferred up to 4 a.u. Calculations are performed in the one-electron Hartree–Fock approximation and with many-electron effects taken into account in the random phase approximation with exchange. It is demonstrated that many-electron correlations play an important role not only in dipole but also in monopole and quadrupole transitions, significantly modifying the cross sections as well as leading to new maxima and minima.

Keywords: 34.80.Dp; 31.50.+w; 32.70.Dz; 34.10.+x (search for similar items in EconPapers)
Date: 2002
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DOI: 10.1142/S0218625X02003445

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