Angular distributions in 184W(n,n') 209Bi(n,n') inelastic scattering: forward peaking of evaporated neutrons?

Sergey Yu. Kun

doi:10.1117/12.204142

3 March 1995 Angular distributions in ¹⁸⁴W(n,n') ²⁰⁹Bi(n,n') inelastic scattering: forward peaking of evaporated neutrons?

Sergey Yu. Kun

Author Affiliations +

Proceedings Volume 2339, International Conference on Neutrons and Their Applications; (1995) https://doi.org/10.1117/12.204142
Event: 4th International Conference on Applications of Nuclear Techniques: Neutrons and their Applications, 1994, Crete, Greece

Abstract

We modify the standard statistical model for precompound reactions (exciton model) by taking into account the correlations between fluctuating S-matrix elements with different total spin values. While angle-integrated cross-sections are not affected by our modification, differential cross-sections become asymmetric about 90 degree(s) c.m. This asymmetry weakens with time and with increasing complexity of the decaying nuclear system, but need not disappear even for the compound (thermalized) system. We present a comparison with data on double differential cross-sections in ¹⁸⁴W(n,n') and ²⁰⁹Bi(n,n') inelastic scattering showing such an asymmetry.

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Sergey Yu. Kun "Angular distributions in ¹⁸⁴W(n,n') ²⁰⁹Bi(n,n') inelastic scattering: forward peaking of evaporated neutrons?", Proc. SPIE 2339, International Conference on Neutrons and Their Applications, (3 March 1995); https://doi.org/10.1117/12.204142

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