Recent experimental studies of the total photonuclear cross-sections between 30 and 140 MeV

Bergère, R.

doi:10.1007/bf02833714

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Temperature Dependence1

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1991

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“…In an alternative explanation of the quasideuteron nuclear photoabsorption cross sections, Lepretre et al [4] and Bergere [5], following the ideas of Laget [23], proposed that a quasideuteron within a nucleus can only undergo photoabsorption via exchange processes, and so only a fraction of the free deuteron photodisintegration cross section should be used. It seems to us that even if this is so, Pauli-blocking eA'ects would still damp the photoabsorption cross sections, and then their explanation would not be consistent with the data.…”

Section: Temperature Dependencementioning

confidence: 99%

Pauli-blocking in the quasideuteron model of photoabsorption

et al. 1991

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We calculate the effects of Pauli-blocking in the quasideuteron model of hard photon-absorption. Our approach is based upon phase space considerations and uses Fermi-gas state densities that conserve linear momentum.The Pauli-blocking function that we obtain differs from Levinger s phenomenological exponential factor and yields nuclear photoabsorption cross sections that are in good agreement with experimental data for photon energies up to the pion threshold, The temperature dependence of the nuclear photoabsorption cross section in the quasideuteron regime is also investigated. The model that we use to describe nuclear photoabsorption is particularly suited for application to preequilibrium models of hard photon emission.

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Section: Temperature Dependencementioning

confidence: 99%