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Neutron capture cross-sections in the keV energy region

Поперечное сечение захвата нейтрона в кэВ-ной области энергий

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Il Nuovo Cimento A (1965-1970)

Summary

Radiative neutron capture cross-sections for the isotopes51V,65Cu,69Ga,80Se,107Ag,110Pd,154Sm and198Pt have been measured at one or two neutron energies in the keV region by means of the activation method. The cross-sections for the three isotopes80Se,110Pd and198Pt are reported for the first time and in the rest of the cases a comparison is made with previously reported values. The experimental values of the cross-sections are compared with the theoretical values obtained from Margolis' formula based upon the statistical theory to extract information about the parameter ξ (=〈D〉/2π〈Гλ〉).

Riassunto

Sono state misurate le sezioni d'urto di cattura radiativa del neutrone per gli isotopi51V,65Cu,69Ga,80Se,107Ag,110Pd,154Sm e198Pt ad una o due energie dei neutroni nella regione dei keV con il metodo dell'attivazione. Si riportano per la prima volta le sezioni d'urto per i tre isotopi80Se,110Pd e198Pt e nei casi rimanenti si fa un confronto con valori precedentemente riportati. I valori sperimentali delle sezioni d'urto si confrontano con i valori teorici ottenuti dalla formula di Margolis che si basa sulla teoria statistica per ottenere informazioni sul parametro ξ (=〈D〉/2π〈Гλ〉).

Резюме

Используя активационный метод, были измерены поперечные сечения радиационного захвата нейтронов для изотопов51V,65Cu,69Ga,80Se,107Ag,110Pd,154Sm и198Pt при одной или двух энергиях нейтронов в кэВ-ной области энергии. Впервые приводятся поперечные сечения для трех изотопов80Se,110Pd и198Pt, а в осталных случаях проводится сравнение с ранее полученными результатами. Экспериментальные величины поперечных сечений сравниваются с теоретическими значениями, полученными из формул Марголиса, основанных на статистической теории, с целью получения информации о параметре ξ ξ (=〈D〉/2π〈Гλ〉).

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Agrawal, H.M., Ansari, M.A., Wasim, M. et al. Neutron capture cross-sections in the keV energy region. Nuov Cim A 61, 141–148 (1981). https://doi.org/10.1007/BF02902447

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