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The reaction27Al(d, p)28Al in the energy range of the deuteron from 2.0 MeV to 3.0 MeV

Реакция27Al(d, p)28Al при энергиях дейтрона от 2.0 до 3.0 МеВ

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Il Nuovo Cimento A (1965-1970)

Summary

The27Al(d, p)28Al reaction was studied at bombarding energies between 2.0 and 3.0 MeV. Excitation functions in steps of 15 keV at two angles of 90° and 150° and angular distributions from 15° to 150° were measured for four proton groups leading to the low-lying levels of28Al. Two mechanisms of compound nucleus and direct interaction were found to be contemporaneously present in the reaction. The direct effect contribution for the groupp o corresponding to the ground-state transition was calculated by the DWBA stripping theory. The experimental total cross-sections at 2.5 MeV compared to the Hauser-Feshbach calculations are given and discussed.

Riassunto

Si è studiata la reazione27Al(d, p)28Al per energie fra 2.0 e 3.0 MeV. Si sono misurate le funzioni di eccitazione in intervalli di 15 keV ai due angoli di 90° e 150° e le distribuzioni angolari da 15° a 150° per quattro gruppi di protoni che portano ai livelli più bassi di28Al. Si è trovato che sono contemporaneamente presenti nella reazione due meccanismi di nucleo composto e di interazione diretta. Si è calcolato con la teoria di stripping DWBA il contributo dell'effetto diretto per il gruppop o corrispondente alla transizione dello stato fondamentale. Si confrontano e discutono le sezioni d'urto totali sperimentali a 2.5 MeV con i calcoli di Hauser-Feshbach.

Резюме

Исследовалась реакция27Al(d, p)28Al при энергиях бомбардирующих частиц от 2.0 до 3.0 МэВ. Измерялись функции возбуждения с шагом 15 кэВ при двух углах 90° и 150° и угловые распределения ог 15° до 150° для четырех протонных групп, приводящих к низко лежащим уровням28Al. Ъыло обнаружено, что два механизма составного ядра и прямого взаимодействия одновременно присутствют в этой реакции. С помощью теории стриппинга DWBA вычислялся вклад прямого эффекта для группыp 0, соответствующей переходу в основное состояние. Обсуждались и проводилось сравнение экспериментальных поперечных сечений при 2.5 МэВ с вычислениями Ъаузера-Фешбаха.

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Work performed at the Physics Research Center in Hsinchu and supported by the Academia Sinica and Tsing Hua University

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Lin, C.S., Lin, E.K. The reaction27Al(d, p)28Al in the energy range of the deuteron from 2.0 MeV to 3.0 MeV. Nuovo Cimento A (1965-1970) 66, 336–342 (1970). https://doi.org/10.1007/BF02824788

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  • DOI: https://doi.org/10.1007/BF02824788

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