The cross sections of the processes 4He(gamma , p)3H and 4He(gamma ,n)3He are calculated taking into account the full final state interaction via the Lorentz integral transform method. This is the first consistent microscopic calculation beyond the three-body breakup threshold. The results are obtained with a semirealistic central nucleon-nucleon potential including also the Coulomb force. The cross sections show a pronounced dipole peak at 27 MeV which lies within the rather broad experimental band. At higher energies, where experimental uncertainties are considerably smaller, one finds a good agreement between theory and experiment. The calculated sum of three- and four-body photodisintegration cross sections is also listed and is in fair agreement with the data.

Two-body photodisintegration of 4He with full final state interaction

Quaglioni, Sofia;Leidemann, Winfried;Orlandini, Giuseppina;Efros, Victor
2004

Abstract

The cross sections of the processes 4He(gamma , p)3H and 4He(gamma ,n)3He are calculated taking into account the full final state interaction via the Lorentz integral transform method. This is the first consistent microscopic calculation beyond the three-body breakup threshold. The results are obtained with a semirealistic central nucleon-nucleon potential including also the Coulomb force. The cross sections show a pronounced dipole peak at 27 MeV which lies within the rather broad experimental band. At higher energies, where experimental uncertainties are considerably smaller, one finds a good agreement between theory and experiment. The calculated sum of three- and four-body photodisintegration cross sections is also listed and is in fair agreement with the data.
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Quaglioni, Sofia; Leidemann, Winfried; Orlandini, Giuseppina; N., Barnea; Efros, Victor
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11572/74269
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