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Dispersive isoscalar amplitude for theE2 reaction (γ, n) in the photodisintegration of4He

Дисперсионная иэоскалярная амплитуда дляE2 реакции (γ, n) при фоторасшеплении4He

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Il Nuovo Cimento A (1965-1970)

Summary

TheE24He(γ, n)3He cross-section has been calculated with a dispersive approach. The 2+,T = 0 state in4He at ≈ 30 MeV is supposed to exist. The exact isoscalar, the Born isovector and the interference cross-sections are also reported. A characteristic resonating behaviour of the corrected cross-section is obtained.

Riassunto

Con tecnica dispersiva si è calcolata la sezione d’urtoE24He(γ, n)3H3. Si è supposta l’esistenza nell’4He dello stato 2+,T = 0 a ≈ 30 MeV. Si sono riportate la sezione d’urto isoscalare esatta, quella isovettoriale in approssimazione di Born e quella di interferenza. La sezione d’urto corretta presenta un caratteristico andamento risonante.

Реэюме

С помошью дисперсионного подхода вычисляется поперечное сечение реакцииE24He(γ,n)3He. Предполагается, что сушествует состояние 2+,T=0 в4He при знергии ≈30 МзВ. Также приводятся точное иэоскалярное, борновское иэо-векторное и интерференционное поперечные сечения. Определяется характеристическое реэонансное поведение скорректированного поперечного сечения.

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Authors and Affiliations

  1. Istituto di Fisica dell’Università, Cagliari

    F. Erdas, G. Mezzorani & A. Pompei

  2. Istituto di Fisica del Politecnico, Torino

    P. Quarati

Authors
  1. F. Erdas
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  2. G. Mezzorani
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  3. A. Pompei
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  4. P. Quarati
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Supported in part by INFN.

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Erdas, F., Mezzorani, G., Pompei, A. et al. Dispersive isoscalar amplitude for theE2 reaction (γ, n) in the photodisintegration of4He. Nuov Cim A 33, 16–22 (1976). https://doi.org/10.1007/BF02748682

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  • DOI: https://doi.org/10.1007/BF02748682

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