A systematic study of (n, p) reactions at 14.7 MeV

Molla, N.I.; Qaim, S. M.

doi:10.1016/0375-9474(77)90431-6

Cited by 148 publications

(91 citation statements)

References 64 publications

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“…The present measurements also agree well with the measurements of Pu et al [8] and Qaim et al [20] around 14 MeV while that of Vinitskaya et al [21] is somewhat low, though overlapping with the present measurements within the quoted uncertainty. The measured cross-section of the 75 As(n, 2n) 74 As reaction from the present work is lower than the available literature data at lower energies.…”

Section: A Comparison With Literature Data and Evaluationssupporting

confidence: 92%

Cross-section measurements of neutron-induced reactions on GaAs using monoenergetic beams from 7.5 to 15 MeV

et al. 2011

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Cross-section measurements for neutron induced reactions on GaAs have been carried out at twelve different neutron energies from 7.5 to 15 MeV using the activation technique. The monoenergetic neutron beams were produced via the 2 H(d, n) 3 He reaction. GaAs samples were activated along with Au and Al monitor foils for determining the incident neutron flux. The induced activities of the reaction products were measured using high-resolution γ-ray spectroscopy. Cross-section for five reaction channels viz., 69 Ga(n, 2n) 68 Ga, 69 Ga(n, p) 69 Zn m , 71 Ga(n, p) 71 Zn m , 75 As(n, 2n) 74 As and 75 As(n, p) 75 Ge, are reported. The results are compared with the previous measurements and available data evaluations. Statistical-model calculations, based on the Hauser-Feshbach formalism, have been carried out using the TALYS and the COH3 codes and compared with the experimental results.

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Section: A Comparison With Literature Data and Evaluationssupporting

confidence: 92%

Cross-section measurements of neutron-induced reactions on GaAs using monoenergetic beams from 7.5 to 15 MeV

et al. 2011

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“…This is particularly evident for 98,100 Mo which exhibit larger PE contributions than 92 Mo, in agreement with the isotope effect (see, e.g., [84,85]). A comparison between the two approaches shows that the local approach is much better tuned to describe the excitation curves than the global approach.…”

Section: -15supporting

confidence: 77%

Reaction mechanisms of fast neutrons on stable Mo isotopes below 21 MeV

et al. 2005

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A large number of new measurements with the activation technique were performed for (n,2n) and neutron-induced Z = 1,2 reaction cross sections on the stable molybdenum isotopes in the energy range from 13.5 to 21 MeV. First results were obtained for the 92 Mo(n,2n) Mo(n,x) 97 Nb m , and 100 Mo(n,α) 97 Zr reactions, above 16 MeV. A significant number of high-accuracy 14 MeV measurements were performed which are in good agreement with the measurements above 16 MeV for reactions studied in both energy ranges. The rather complete database for the molybdenum isotopes was analyzed with two different sets of consistent model calculations: a local and a global approach. The global approach (a blind calculation with the TALYS code) provides a good overall description of the dominant reaction channels, although the (n,α) reactions for the heavy isotopes are overpredicted. The local approach (an adjusted calculation with the STAPRE-H code) describes the shapes and magnitudes of the excitation functions well from the reaction thresholds up to 21 MeV using a consistent parameter set, which was optimized based on all experimental information for the nuclei at hand and their immediate neighbors. The agreement between experimental and calculated data is, in general, good both at the maxima and at the tails of the excitation functions, and both for total activation cross sections of a particular channel and for cross sections leading to isomers, showing the viability of the level densities, the optical models, and the γ widths. Comparison of the two model calculations with the data indicates the relevance of an appropriate treatment for preequilibrium (PE) α-particle emission for the description of the data above 14 MeV. Comparison between the model calculations shows largely different PE deuteron emission contributions to the total ( Z = 1, A = 1) cross sections with an additional marked difference in energy dependence. This suggests that emission spectra around 20 MeV are required to establish the magnitude of the PE deuteron emission contribution to this process. New γ -ray strength functions were established by verification against average (n,γ ) data and were demonstrated to give good agreement with the measured isomer production cross sections.

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“…At higher energies, the results of Nesaraja et al [6] are larger than the present work, and with substantial uncertainties. The present measurements also agree well with the measurements of Pu et al [7] and Qaim et al [8] around 14 MeV while that of Vinitskaya et al [9] is somewhat low, though overlapping with the present measurements, within the quoted uncertainty.…”

Section: Resultssupporting

confidence: 82%

Cross Section Measurements of Neutron Induced Reactions on GaAs using Monoenergetic Beams from 7.5 to 15 MeV

Raut

Crowell

Fallin

et al. 2011

J. Phys.: Conf. Ser.

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Abstract.Cross section measurements for the neutron induced reactions on GaAs have been carried out at ten different neutron energies from 7.5 to 15 MeV, using the activation technique. The monoenergetic neutron beams were produced via the 2 H(d,n) 3 He reaction, known for it's high neutron yield in the chosen energy regime. GaAs samples were activated along with the Au and Al monitor foils, for estimating the incident neutron flux. The induced activiy was measured using high resolution γ-ray spectroscopy. Five reaction channels viz., 69 Ga(n, 2n) 68 Ga, 69 Ga(n, p) 69m Zn, 71 Ga(n, p) 71m Zn, 75 As(n, 2n) 74 As and 75 As(n, p) 75 Ge, have been reported for the comprehensive cross section measurements. The results are compared with the existing literature data and the available evaluations. Statistical model calculations, based on the Hauser-Feshbach formalism, have been carried out using the TALYS and EMPIRE codes and are compared with the experimental values.

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A systematic study of (n, p) reactions at 14.7 MeV

Cited by 148 publications

References 64 publications

Cross-section measurements of neutron-induced reactions on GaAs using monoenergetic beams from 7.5 to 15 MeV

Cross-section measurements of neutron-induced reactions on GaAs using monoenergetic beams from 7.5 to 15 MeV

Reaction mechanisms of fast neutrons on stable Mo isotopes below 21 MeV

Cross Section Measurements of Neutron Induced Reactions on GaAs using Monoenergetic Beams from 7.5 to 15 MeV

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