Original scientific paper

The utility of Compton scattering in determination of electron momentum density

Z. Kaliman ; Faculty of Philosophy, University of Rijeka, 51000 Rijeka, Croatia
T. Surić ; R. Bošković Insitute, P. O. Box 180, HR-10002 Zagreb, Croatia
K. Pisk ; R. Bošković Insitute, P. O. Box 180, HR-10002 Zagreb, Croatia
R. H. Pratt ; Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260, U. S. A.

Abstract

We present new insights regarding the validity of the impulse approximation (IA) in determining electron momentum density (EMD) from Compton scattering. These insights are obtained utilizing the code we have recently developed for the full calculation of the triple differential cross-section (TDCS) for Compton scattering. We find that, due to the averaging, at lower energies IA is more accurate for the double differential cross-section (DDCS) than for TDCS. We conclude that at such energies an EMD determination from the DDCS is more accurate than its direct determination through the measurement of the TDCS at the same energy. We also discuss the validity of IA for calculations of other less averaged Compton observables.

Keywords

Compton scattering; electron momentum density; impulse approximation; double differential cross-section; triple differential cross-section

Hrčak ID:

301053

URI

https://hrcak.srce.hr/301053

Publication date:

2.4.2000.

Article data in other languages: croatian

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