Volume form of coupling interaction in semi-direct (n, γ) and (p, γ) reactions

Longo, Giuseppe; Saporetti, F.

doi:10.1016/0375-9474(73)90596-4

Cited by 31 publications

(6 citation statements)

References 29 publications

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“…A comparison of the matrix elements yield the expression of the form factor. The same arguments have been advanced in [6,8], but have not been developped.…”

Section: Introductionmentioning

confidence: 87%

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The particle-vibration coupling form factor

Harouna

1980

Physics Letters B

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A simple model for calculating the particle-vibration form factor is studied. Explicit expressions of the latter quantity are worked out for various kinds of vibrations, assuming a static, zero range effective interaction. Numerical results for (T=0) and (T = 1) octupole vibrations, for Fermi and Gamow-Teller vibrations are given. The influence of the range of the effective interaction is discussed in relation with the nature of the vibration.

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“…A comparison of the matrix elements yield the expression of the form factor. The same arguments have been advanced in [6,8], but have not been developped.…”

Section: Introductionmentioning

confidence: 87%

“…A good knowledge of the form factor is then desirable. We are, however, far from this goal, since at least some of the radiative capture data are analyzed (in the frame of the direct-semi-direct model) with a volume form factor [6,7]. We would like to clarify the issue by a kind of intermediate approach.…”

Section: Introductionmentioning

confidence: 99%

The particle-vibration coupling form factor

Harouna

1980

Physics Letters B

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“…When h(r) is a surface coupling function [12], the factor 3/ r 2 must be omitted [17]. The transition matrix element between the dipole and ground states ψ 1ν |ρ ν |ψ 00 can be related to a photoabsorption cross section [12,13].…”

Section: A Direct-semidirect Cross Sectionmentioning

confidence: 99%

Nucleon direct-semidirect radiative capture with Skyrme-Hartree-Fock-BCS bound states

et al. 2007

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The nucleon direct-semidirect (DSD) capture cross sections are obtained by calculating a transition amplitude to the Hartree-Fock-BCS bound states. The radial matrix elements in the DSD amplitudes are calculated from the radial part of the single-particle wave functions. For deformed nuclei the single-particle states are expanded in the cylindrical harmonic-oscillator basis and then projected on the spherical harmonic-oscillator basis. The pairing correlations are treated in the BCS approach and the calculated spectroscopic factors are in fairly good agreement with experimental data in the even tin isotopes from 116 Sn to 124 Sn. The resulting DSD cross sections for the neutron capture by 208 Pb and 238 U are found to be in good agreement with the available experimental data. The calculations are also performed for the neutron capture on 122 Sn and 132 Sn isotopes that are important for the r-process in astrophysics.

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“…When h(r) is a surface form [9], the factor 3/ r 2 must be omitted [13]. The transition matrix element between the dipole and ground states | ψ 1ν |ρ ′ ν |ψ 00 | 2 can be related to a photoabsorption cross section [9,10].…”

Section: Direct-semidirect Cross Sectionmentioning

confidence: 99%

Calculation of direct-semidirect radiative proton capture with Skyrme-Hartree-Fock-BCS model

Watanabe

Kawano

Bonneau

2010

EPJ Web of Conferences

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Abstract.We calculate the direct-semidirect (DSD) radiative proton capture cross section on 112 Sn, 63 Cu, and 209 Bi in the microscopic Hartree-Fock-BCS approach using the Skyrme interaction. Compared to the compound process, the DSD process becomes dominant in the proton capture reaction above ten and several MeV incident proton energies. We compare several particle-vibration coupling forms, which is sensitive to the semidirect cross section.

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Volume form of coupling interaction in semi-direct (n, γ) and (p, γ) reactions

Cited by 31 publications

References 29 publications

The particle-vibration coupling form factor

The particle-vibration coupling form factor

Nucleon direct-semidirect radiative capture with Skyrme-Hartree-Fock-BCS bound states

Calculation of direct-semidirect radiative proton capture with Skyrme-Hartree-Fock-BCS model

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