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Journal Articles Physical Review Letters Year : 2002

Suppression of soft nuclear Bremsstrahlung in proton-nucleus collisions

M.J. van Goethem
  • Function : Author
J.C.S. Bacelar
  • Function : Author
J. Diaz
  • Function : Author
M. Hoefman
  • Function : Author
R. Holzmann
  • Function : Author
H. Huisman
  • Function : Author
N. Kalantar-Nayestanaki
  • Function : Author
A. Kugler
  • Function : Author
H. Loehner
  • Function : Author
J.G. Messchendorf
  • Function : Author
R.W. Ostendorf
  • Function : Author
S. Schadmand
  • Function : Author
R.H. Siemssen
  • Function : Author
R.S. Simon
  • Function : Author
R. Turrisi
  • Function : Author
M. Vokerts
  • Function : Author
V. Wagner
  • Function : Author
H.W. Wischut
  • Function : Author

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 quasifree 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.

Dates and versions

in2p3-00019859 , version 1 (12-04-2006)

Identifiers

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M.J. van Goethem, Laurent Aphecetche, J.C.S. Bacelar, H. Delagrange, J. Diaz, et al.. Suppression of soft nuclear Bremsstrahlung in proton-nucleus collisions. Physical Review Letters, 2002, 88, pp.122302. ⟨10.1103/PhysRevLett.88.122302⟩. ⟨in2p3-00019859⟩
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