HINDAS A European Nuclear Data Program for Accelerator-Driven Systems

Koning, A. J.; Beijers, H.; Benlliure, J.; Bersillon, O.; Blomgren, J.; Cugnon, Joseph; Duijvestijn, Marieke; Eudes, P.; Filges, D.; Haddad, Férid; Hilaire, Stéphane; LeBrun, Claude; Lecolley, F.R.; Leray, S.; Meulders, Jean‐Pierre; Michel, R.; Neef, R.D.; Nolte, R.; Olsson, N.; Ostendorf, Reint; Ramstroem, E.; Schmidt, Karl‐Heinz; Schuhmacher, H.; Slypen, I.; Synal, Hans-Arno; Weinreich, R.

doi:10.1080/00223131.2002.10875308

Cited by 46 publications

(52 citation statements)

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“…Contributions from various reaction mechanisms, namely compound nucleus evaporation, elastic scattering, and direct inelastic scattering to natural and unnatural parity states, are displayed. The compound nucleus contribution has been calculated with the Talys nuclear reaction code [25]. Our predictions are in fair agreement with the experimental data.…”

Section: Pb(nn') and (Nxn)supporting

confidence: 71%

“…5, for the incident energy 9.1 MeV at two outgoing angles. The evaporation (red dash curves) and the neutron fission (blue dash curves) contributions are obtained from the HauserFeshbach model, implemented in the Talys code [25], and the Madland-Nix model [28,29], respectively. Direct elastic and inelastic contributions for the GS rotational band excitations are also calculated within the JLM folding model [8,30] (green double-dash curves).…”

Section: U (Nxn) and (Nn'γ )mentioning

confidence: 99%

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Microscopic modeling of direct pre-equilibrium emission from neutron induced reactions on even and odd actinides

et al. 2017

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Abstract. Direct inelastic scattering to discrete excitations and pre-equilibrium emission are described within a microscopic model. Nuclear structure information are obtained in the (Quasi) Random Phase Approximation ( (Q)RPA) framework implemented with the Gogny force. The relevant optical and transition potentials are build considering the JLM folding model. Various successful applications are shown for (n,n), (n,n'), (n,xn) and (n,xnγ ) reactions for spherical and axially deformed even-even or odd targets. The rearrangement corrections to transition potentials and the contribution of unnatural parity excitations to pre-equilibrium emission are discussed. Our model predictions for (n,n'γ ) reactions, for intra-and inter-band transitions in 238 U, and for the 239 Pu(n,2n) cross section are analyzed.

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Section: Pb(nn') and (Nxn)supporting

confidence: 71%

Section: U (Nxn) and (Nn'γ )mentioning

confidence: 99%

Microscopic modeling of direct pre-equilibrium emission from neutron induced reactions on even and odd actinides

et al. 2017

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“…Unlike the case of 90 Zr, the partial cross sections for 93 Tc are not only sensitive to the E1 but also to the M1 strength. Therefore, the input for both were varied for the statistical model calculations using TALYS [5] in order to reproduce the experimental values. For the E1 strength the best results were obtained by using quasi-particle random-phase approximation (QRPA) models based on realistic Skyrme and Gogny interactions.…”

Section: The γ-Strength Function In 93 Tcmentioning

confidence: 99%

Experimental Studies of Nuclear Physics Input for \(\gamma \)-Process Nucleosynthesis

Scholz¹,

Heim²,

Mayer³

et al. 2017

Proceedings of the 14th International Symposium on Nuclei in the Cosmos (NIC2016)

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The predictions of reaction rates for the γ process in the scope of the Hauser-Feshbach statistical model crucially depend on nuclear physics input-parameters as optical-model potentials (OMP) or γ-ray strength functions. Precise cross-section measurements at astrophysically relevant energies help to constrain adopted models and, therefore, to reduce the uncertainties in the theoretically predicted reaction rates. During the last years, several cross-sections of charged-particle induced reactions on heavy nuclei have been measured at the University of Cologne. Either by means of the in-beam method at the HORUS γ-ray spectrometer or the activation technique using the Cologne Clover Counting Setup, total and partial cross-sections could be used to further constrain different models for nuclear physics input-parameters. It could be shown that modifications on the α-OMP in the case of the 112 Sn(α,γ) reaction also improve the description of the recently measured cross sections of the 108 Cd(α,γ) and 108 Cd(α,n) reaction and other reactions as well. Partial cross-sections of the 92 Mo(p, γ) reaction were used to improve the γ-strength function model in 93 Tc in the same way as it was done for the 89 Y(p,γ) reaction.

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“…The Talys nuclear reaction code [14] was the first option suggested [10,11] to be explored as potential candidate to produce the evaluated data for double-differential neutron and photon emission cross-sections for incident deuterons up 40MeV. The potential of Talys to produce deuteron evaluated data files for neutron production with enough quality has been explored in the range from 0 to 20MeV for several elements of interest in the EVEDA prototype accelerator [8,9].…”

Section: Introductionmentioning

confidence: 99%

New capabilities for Monte Carlo simulation of deuteron transport and secondary products generation

Sauvan

Sanz

Ogando

2010

Nuclear Instruments and Methods in Physics Research Section A:

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Keywords: MCNPX Monte Carlo Charged particles Transport library Variance reductionSeveral important research programs are dedicated to the development of facilities based on deuteron accelerators. In designing these facilities, the definition of a validated computational approach able to simulate deuteron transport and evaluate deuteron interactions and production of secondary particles with acceptable precision is a very important issue. Current Monte Carlo codes, such as MCNPX or PHITS, when applied for deuteron transport calculations use built-in semi-analytical models to describe deuteron interactions. These models are found unreliable in predicting neutron and photon generated by low energy deuterons, typically present in those facilities.We present a new computational tool, resulting from an extension of the MCNPX code, which improve significantly the treatment of problems where any secondary product (neutrons, photons, tritons, etc.) generated by low energy deuterons reactions could play a major role. Firstly, it handles deuteron evaluated data libraries, which allow describing better low deuteron energy interactions. Secondly, it includes a reduction variance technique for production of secondary particles by charged particle-induced nuclear interactions, which allow reducing drastically the computing time needed in transport and nuclear response calculations. Verification of the computational tool is successfully achieved. This tool can be very helpful in addressing design issues such as selection of the dedicated neutron production target and accelerator radioprotection analysis. It can be also helpful to test the deuteron cross-sections under development in the frame of different international nuclear data programs.

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HINDAS A European Nuclear Data Program for Accelerator-Driven Systems

Cited by 46 publications

References 1 publication

Microscopic modeling of direct pre-equilibrium emission from neutron induced reactions on even and odd actinides

Microscopic modeling of direct pre-equilibrium emission from neutron induced reactions on even and odd actinides

Experimental Studies of Nuclear Physics Input for \(\gamma \)-Process Nucleosynthesis

New capabilities for Monte Carlo simulation of deuteron transport and secondary products generation

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