Model calculations of the radiative capture process and the Brink–Axel hypothesis

Běták, E.; Cvelbar, F.; Likar, A.; Vidmar, T.

doi:10.1016/s0375-9474(00)00562-5

Cited by 7 publications

(3 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For the statistical calculations (the codes TALYS and EMPIRE contain as their essential parts the pre-equilibrium emission), the application of the models to reactions near the closed shells is not straightforward, and a special attention should be paid to different quantities, especially the level densities. This has been already demonstrated in our previous papers, where also a special care had to be applied for the reactions on double-closed 208 Pb [17,24]. For the DSD calculations, on the other hand, the doubleclosed nucleus is an advantage, as the single-particle states with well defined wave functions appear more clearly here.…”

Section: Gamma Spectra In Proton Radiative Capture Above 10 Mevmentioning

confidence: 62%

Radiative nucleon capture - a dual approach

Běták

Likar

Vidmar

2007

Nd2007

Self Cite

View full text Add to dashboard Cite

Abstract. The nucleon radiative capture reactions represent a great interest for possible new ways of production of therapeutic and diagnostic isotopes and also for their deep insight into the details of nuclear reaction process itself. The high-energy gammas originating from the reactions of nucleon radiative capture at incident energies close to or above 10 MeV can be described by either the semi-direct-direct model or within the pre-equilibrium approach. The detailed view on the origin of the optical model potential indicates the origin of its imaginary part. Both approaches are compared together and also to the data.

show abstract

Section: Gamma Spectra In Proton Radiative Capture Above 10 Mevmentioning

confidence: 62%

Radiative nucleon capture - a dual approach

Běták

Likar

Vidmar

2007

Nd2007

Self Cite

View full text Add to dashboard Cite

show abstract

“…Here, deviations and even violations to the hypothesis are found [11,12]. However, for other theoretical applications, the assumption of the gBA hypothesis is successfully applied [13,14,15,16,17].…”

Section: Introductionmentioning

confidence: 99%

Is The Generalized Brink-Axel Hypothesis Valid?

Guttormsen¹,

Larsen²,

Görgen³

et al. 2017

Proceedings of the 26th International Nuclear Physics Conference — PoS(INPC2016)

View full text Add to dashboard Cite

Experimental results of the 237 Np(d, pγ) 238 Np reaction are presented, which verifies the generalized Brink-Axel (gBA) hypothesis for γ transitions between states in the quasi-continuum. The gBA hypothesis holds not only for specific collective resonances, but for the full dipole strength below the neutron separation energy. We discuss the validity of the gBA hypothesis also for lighter systems like 92 Zr where the concept of a unique γ-ray strength function (γSF) is problematic due to large Porter-Thomas fluctuations. Methods for studying the γSF and the fluctuations as function of excitation energy are presented.

show abstract

“…The study of excitation functions of both neutron-and proton-induced reactions [8,9,10,11] extended the applicability of the model to energies starting from few MeV to about 30 MeV. Significant improvement was the incorporation of spin into the formalism of the pre-equilibrium exciton model [12,13], which enabled also pre-equilibrium calculations leading to discrete states [14] and the comparison to the direct-semi-direct model calculations [3].…”

Section: Introductionmentioning

confidence: 99%

Hard gamma emission close to the GDR energy region

Běták¹

2008

Proceedings of Workshop on Photon Strength Functions and Related Topics — PoS(PSF07)

View full text Add to dashboard Cite

We address mainly the nucleon radiative capture reactions at incident energies above 10 MeV, but sufficiently low so that bremsstrahlung and the quasi-deuteron mechanisms do not play significant role. The main process considered is the direct-semi-direct capture treated either conventionally as the DSD model or interpreted within statistical approach as the pre-equilibrium γ emission. We compare the model assumptions of both approaches and also their applicability and predictions. Workshop on Photon Strength Functions and Related Topics

show abstract

Model calculations of the radiative capture process and the Brink–Axel hypothesis

Cited by 7 publications

References 38 publications

Radiative nucleon capture - a dual approach

Radiative nucleon capture - a dual approach

Is The Generalized Brink-Axel Hypothesis Valid?

Hard gamma emission close to the GDR energy region

Contact Info

Product

Resources

About