Suppression of soft nuclear bremsstrahlung in proton-nucleus collisions
Nuclear Experiment
2008-11-26 v1
Abstract
Photon energy spectra up to the kinematic limit have been measured in 190 MeV proton reactions with light and heavy nuclei to investigate the influence of the multiple-scattering process on the photon production. Relative to the predictions of models based on a quasi-free production mechanism a strong suppression of bremsstrahlung is observed in the low-energy region of the photon spectrum. We attribute this effect to the interference of photon amplitudes due to multiple scattering of nucleons in the nuclear medium.
Keywords
Cite
@article{arxiv.nucl-ex/0111021,
title = {Suppression of soft nuclear bremsstrahlung in proton-nucleus collisions},
author = {M. J. van Goethem and L. Aphecetche and J. C. S. Bacelar and H. Delagrange and J. Diaz and D. d'Enterria and M. Hoefman and R. Holzmann and H. Huisman and N. Kalantar--Nayestanaki and A. Kugler and H. Loehner and G. Martinez and J. G. Messchendorp and R. W. Ostendorf and S. Schadmand and R. H. Siemssen and R. S. Simon and Y. Schutz and R. Turrisi and M. Volkerts and H. W. Wilschut},
journal= {arXiv preprint arXiv:nucl-ex/0111021},
year = {2008}
}
Comments
12 pages, 3 figures, submitted to Phys. Rev. Lett