Summary
Total photon cross-sections for the elements Al and Sn, and for the compounds KBr, RbBr and CsBr at photon energies 17.8, 20.8, 33.195 and 43.423 keV were measured using a HpGe detector in a «good geometry» system. The experimental values obtained agree satisfactorily with the theoretical values. A discussion of the experimental data in terms of chemical effects and the validity of Bragg’s additivity law is presented.
Riassunto
Sono state misurate le sezioni d’urto totali fotoniche per gli elementi Al e Sn e per i composti KBr, RbBr e CsBr a energie del fotone di 17.8, 20.8, 33.195 e 43.423 keV usando un rilevatore and HpGe in un sistema a «buona geometria». I valori sperimentali ottenuti sono in soddisfacente accordo con i valori teorici. Si presenta una discussione dei dati sperimentali in termini degli effetti chimici e della validità della legge dell’additività di Bragg.
Реэюме
Испольэуя НрGе детектор в системе,с «хорощей геометрией», были иэмерены полные поперечные сечения рассяния протонов на злементах А1 и 5п и на соединениях КВг, RЬВг и СВГ при знергиях протонов 17.8; 20.8; 33.195 и 43.423 кзВ. Экспериментальные реэультаты удовлетворительно согласуются с теоретическими предскаэаниями. Проводится обсуждение зкспериментальных данных с учетом химических зффектов. Отмечается справедливость эакона аддитивности Брзгга.
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Tan, A.T.L., Lakshminarayana, V., Giles, I.S. et al. Photon cross-section measurements at low energies in some bromides. Nuov Cim A 99, 587–594 (1988). https://doi.org/10.1007/BF02730625
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DOI: https://doi.org/10.1007/BF02730625