Radiative capture of fast neutrons by 89Y and 140Ce

Bergqvist, I.; Pålsson, Birgitta; Nilsson, L.; Lindholm, A.; Drake, D. M.; Arthur, E.D.; McDaniels, D.K.; Varghese, P.

doi:10.1016/0375-9474(78)90114-8

Cited by 31 publications

(3 citation statements)

References 24 publications

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“…5, in comparison with the corresponding experimental data of Ref. [21]. Bearing in mind that the above-shown DSD-reaction cross sections are evaluated within the model without the use of free parameters, the description of the corresponding experimental data seems to be satisfactory.…”

Section: B Reactions Accompanied By Excitation Of Ivgdrmentioning

confidence: 56%

Description of the simplest photonuclear reactions within the particle-hole dispersive optical model

Tulupov

Urin

2014

Phys. Rev. C

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A recently developed particle-hole dispersive optical model is applied to describe the cross sections of photoabsorption, direct + semidirect photoneutron and inverse reactions accompanied by excitation of the isovector giant dipole and quadrupole resonances in medium-heavy-mass spherical nuclei. The model is an extension of the standard and nonstandard versions of the continuum-random-phase approximation by including the spreading effect in a phenomenological way. It contains the following ingredients: the Landau-Migdal particle-hole interaction and a phenomenological mean field consistent with this interaction, isovector velocity-dependent forces taken in the simplest form and the imaginary part of an effective single-particle optical-model potential determining the corresponding dispersive part. All the model parameters are taken from the other data and from the description of photoabsorption, while the direct + semidirect photoneutron and inverse reactions are described without the use of specific adjustable parameters. Calculation results obtained for a few neutron-closed-shell nuclei are compared with the corresponding experimental data.

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Section: B Reactions Accompanied By Excitation Of Ivgdrmentioning

confidence: 56%

Description of the simplest photonuclear reactions within the particle-hole dispersive optical model

Tulupov

Urin

2014

Phys. Rev. C

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“…It is found, however, that the use of the "realistic" effective mass does not improve description of the data. (3) We get reasonable description of two sets of the rather old experimental data on the partial (n, γ)-reactions for medium-heavy mass nuclei [7,9]. (4) We make predictions for partial 208 Pb(γ, n)-reaction cross sections bearing in mind opportunities being open now at new facilities (e.g., SPring-8) to measure the photonuclear reaction cross sections with high accuracy.…”

Section: Resultsmentioning

confidence: 89%

On Description of Photonuclear Reactions Accompanied by Excitation of the Giant Dipole Resonance

Rodin¹,

Urin²

2002

Electromagnetic Interactions in Nuclear and Hadron Physics

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A semimicroscopical approach is applied to describe the photoabsorption and partial photonucleon reactions accompanied by excitation of the giant dipole resonance (GDR). The approach is based on both continuum-RPA (CRPA) and a phenomenological description for doorway-state coupling to many-quasiparticle configurations. Apart from a phenomenological mean field, the separable isovector momentum-dependent forces and momentum-independent Landau-Migdal particlehole interaction are used as the input quantities for CRPA calculations. The photoabsorption and partial (n, γ)-reaction cross sections in the vicinity of the GDR are satisfactorily described for 89 Y, 140 Ce and 208 Pb target nuclei. An attempt to evaluate the total direct-neutron-decay branching ratio of the GDR in 48 Ca and 208 Pb is also undertaken.

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“…Two sets of the experimental data on the neutron radiative capture with the GDR excitation in 208 Pb [17] and in 89 Y, 140 Ce [18] are only available. Before going to the results of the semimicroscopical description of these and some other data, we would like to comment on the ingredients of the approach and the smearing procedure.…”

Section: Calculational Ingredients and Resultsmentioning

confidence: 99%

Semimicroscopical description of the simplest photonuclear reactions accompanied by excitation of the giant dipole resonance in medium-heavy mass nuclei

Rodin

Urin

2002

Phys. Rev. C

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A semimicroscopical approach is applied to describe photoabsorption and partial photonucleon reactions accompanied by the excitation of the giant dipole resonance (GDR). The approach is based on the continuum-RPA (CRPA) with a phenomenological description for the spreading effect. The phenomenological isoscalar part of the nuclear mean field, momentum-independent Landau-Migdal particle-hole interaction, and separable momentum-dependent forces are used as input quantities for the CRPA calculations. The experimental photoabsorption and partial (n, γ)-reaction cross sections in the vicinity of the GDR are satisfactorily described for 89 Y, 140 Ce and 208 Pb target nuclei. The total direct-neutron-decay branching ratio for the GDR in 48 Ca and 208 Pb is also evaluated.

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Radiative capture of fast neutrons by 89Y and 140Ce

Cited by 31 publications

References 24 publications

Description of the simplest photonuclear reactions within the particle-hole dispersive optical model

Description of the simplest photonuclear reactions within the particle-hole dispersive optical model

On Description of Photonuclear Reactions Accompanied by Excitation of the Giant Dipole Resonance

Semimicroscopical description of the simplest photonuclear reactions accompanied by excitation of the giant dipole resonance in medium-heavy mass nuclei

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