Nuclear bremsstrahlung production in proton-nucleus reactions at 168 and 200 MeV

Pinston, J.A.; Barnéoud, D.; Bellini, V.; Drissi, S.; Guillot, J.; Julien, J.; Njock, M. Kwato; Maurel, Marie‐Christine; Nifenecker, H.; Schüßler, F.; Vorlet, J.P.

doi:10.1016/0370-2693(89)91406-8

Cited by 27 publications

(20 citation statements)

References 10 publications

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“…quantitative approach to explore the discrepancies between the Edgington-Rose cross sections and the other measurements is to compare the total cross section above a low energy threshold. Total cross sections were found by integrating the double differential cross section above 40 MeV and then multiplying the resultant by 4~, the same procedure that was used in the previous measurements [14,15]. The results are displayed in Tables II and III.…”

Section: B Comparison With Other Datamentioning

confidence: 99%

“…The concept of P~w as proposed by Nifenecker and Bondorf [26] as a way to look for systematic trends in gamma ray production in heavy-ion reactions and has been extended to proton-nuclues collisions by Pinston et al [15].…”

Section: B Comparison With Other Datamentioning

confidence: 99%

“…The energy spectra for the Edgington-Rose data [13] as well as those of Kwato Njock et al [14] and Pinston et al [15] are plotted in Fig. 4 [14] at 72 MeV, Edgington and Rose [13]at 140 MeV, and Pinston et al [15]at 168 MeV vs a reduced variable E /E, which is the measured gamma ray energy divided by the incident proton energy. quantitative approach to explore the discrepancies between the Edgington-Rose cross sections and the other measurements is to compare the total cross section above a low energy threshold.…”

Section: B Comparison With Other Datamentioning

confidence: 99%

“…"+Zcr (4) Experimentally, Hess found that cr&"=3ozz [31], and with this simplification Eq. (3) can be rewritten as E~( MeV) Target cr"t (pb) Reference [14] present data [15] MeV are not as precise as the lower energy data due to the large uncertainty in the m. subtraction. Even so, there is a linear increase of P~a s the incident proton energy is increased.…”

Section: B Comparison With Other Datamentioning

confidence: 99%

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High energy gamma ray production in proton-induced reactions at 104, 145, and 195 MeV

et al. 1992

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Energy spectra and angular distributions have been measured for high energy gamma rays (E~& 20 MeV) from proton-nucleus reactions at 104, 145, and 195 MeV on targets of C, Zn, and Pb. Gamma rays were observed with energies up to 170 MeV. The spectra sho~ed difFerences from the typical exponential shape that is observed in gamma ray production from heavy-ion reactions. The angular distribution of the gamma ray is forward peaked in the laboratory, which is consistent with emission from a moving source. A comparison is made with previous measurements at 72, 140, 168, and 200 MeV. The experimental evidence indicates that first-chance incoherent proton-neutron bremsstrahlung is the main production mechanism.PACS number(s): 25.40. -h

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Section: B Comparison With Other Datamentioning

confidence: 99%

Section: B Comparison With Other Datamentioning

confidence: 99%

Section: B Comparison With Other Datamentioning

confidence: 99%

Section: B Comparison With Other Datamentioning

confidence: 99%

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High energy gamma ray production in proton-induced reactions at 104, 145, and 195 MeV

et al. 1992

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“…The cross sections of the emitted photons have been measured for a long time (see Refs. [1][2][3][4][5][6][7][8][9][10][11]), and different theoretical models and approaches were developed to estimate the emitted photons (for example, see [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29]). In particular, the spectra of the emitted photons are dependent on dynamics of the scattering of the proton off the nucleus, which is determined by interactions between the proton and nucleus.…”

Section: Introductionmentioning

confidence: 99%

New approach to determine proton-nucleus interactions from experimental bremsstrahlung data

Maydanyuk

Zhang

2015

Phys. Rev. C

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A new approach is presented to determine the proton-nucleus interactions from the analysis of the accompanying photon bremsstrahlung. We study the scattering of p + 208 Pb at the proton incident energies of 140 and 145 MeV, and the scattering of p + 12 C, p + 58 Ni, p + 107 Ag and p + 197 Au at the proton incident energy of 190 MeV. The model determines contributions of the coherent emission (formed by an interaction between the scattering proton and nucleus as a whole without the internal many-nucleon structure), incoherent emission (formed by interactions between the scattering proton and nucleus with the internal many-nucleon structure), and transition between them in dependence on the photon energy. The radius-parameter of the proton-nucleus potential for these reactions is extracted from the experimental bremsstrahlung data analysis. We explain the hump-shaped plateau in the intermediate-and high-energy regions of the spectra by the essential presence of the incoherent emission, while at low energies the coherent emission predominates which produces the logarithmic shape spectrum. We provide our predictions (in absolute scale) for the angular distribution of the bremsstrahlung photons in order to test our model, results and analysis in further experiments.

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Nucleon-Nucleon Bremsstrahlung

Nakayama

1994

Perspectives in the Structure of Hadronic Systems

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Nuclear bremsstrahlung production in proton-nucleus reactions at 168 and 200 MeV

Cited by 27 publications

References 10 publications

High energy gamma ray production in proton-induced reactions at 104, 145, and 195 MeV

High energy gamma ray production in proton-induced reactions at 104, 145, and 195 MeV

New approach to determine proton-nucleus interactions from experimental bremsstrahlung data

Nucleon-Nucleon Bremsstrahlung

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