MCNP6 Fission Cross Section Calculations at Intermediate and High Energies

Mashnik, S. G.; Sierk, Arnold J.; Prael, R.E.

doi:10.1016/j.nds.2014.04.069

Cited by 7 publications

(4 citation statements)

References 8 publications

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“…We remark in passing that most of the experimental data were analyzed with other models; see, for example, the vast validation effort of the MCNPX/MCNP6 event generators CEM and LAQGSM [63][64][65][66][67][68][69]. However, we do not enter into a detailed comparison because these calculations have no direct bearing upon GEANT4.…”

Section: Comparison With Nucleus-nucleus Experimental Datamentioning

confidence: 99%

Extension of the Liège intranuclear-cascade model to reactions induced by light nuclei

et al. 2014

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The purpose of this paper is twofold. First, we present the extension of the Liège intranuclear-cascade model to reactions induced by light ions. We describe here the ideas upon which we built our treatment of nucleus-nucleus reactions and we compare the model predictions against a vast set of heterogeneous experimental data. In spite of the discussed limitations of the intranuclear-cascade scheme, we find that our model yields valid predictions for a number of observables and positions itself as one of the most attractive alternatives available to GEANT4 users for the simulation of light-ion-induced reactions. Second, we describe the C++ version of the code, which is physicswise equivalent to the legacy version, is available in GEANT4, and will serve as the basis for all future development of the model.

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Section: Comparison With Nucleus-nucleus Experimental Datamentioning

confidence: 99%

Extension of the Liège intranuclear-cascade model to reactions induced by light nuclei

et al. 2014

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“…For CEM03.03 and LAQGSM03.03, we modified slightly [35] GEM2. Since in this study we consider only reactions on light, not fissioning nuclei, we will not discuss further the fission model; interested readers may found details and further references in [9,22,35,36].…”

Section: Fissionmentioning

confidence: 99%

MCNP6 fragmentation of light nuclei at intermediate energies

Mashnik,

Kerby

2014

Preprint

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Fragmentation reactions induced on light target nuclei by protons and light nuclei of energies around 1 GeV/nucleon and below are studied with the latest Los Alamos Monte Carlo transport code MCNP6 and with its cascade-exciton model (CEM) and Los Alamos version of the quark-gluon string model (LAQGSM) event generators, version 03.03, used as stand-alone codes. Such reactions are involved in different applications, like cosmic-ray-induced single event upsets (SEU's), radiation protection, and cancer therapy with proton and ion beams, among others; therefore, it is important that MCNP6 simulates them as well as possible. CEM and LAQGSM assume that intermediate-energy fragmentation reactions on light nuclei occur generally in two stages. The first stage is the intranuclear cascade (INC), followed by the second, Fermi breakup disintegration of light excited residual nuclei produced after INC. Both CEM and LAQGSM account also for coalescence of light fragments (complex particles) up to 4 He from energetic nucleons emitted during INC. We investigate the validity and performance of MCNP6, CEM, and LAQGSM in simulating fragmentation reactions at intermediate energies and discuss possible ways of further improving these codes.

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“…When we modified the GEM2 parameters in Refs. [15,16] so that it describes well proton-induced fission cross sections in our CEM and LAQGSM codes, we chose not to use the experimental fission cross sections directly as they are published in the literature. For intermediate-and high-energy reactions, where our codes are intended to be used, the experimental data on proton-induced fission cross sections are sparse and not as precise as for low-energy reactions measured for reactor applications.…”

Section: Calculation Of Fission Cross Sectionsmentioning

confidence: 99%

“…[15,16] we chose to adjust only these two parameters in our merged CEM+GEM2 and LAQGSM+ GEM2 codes. We did not change the form of systematics (7) and (8) derived by Atchison.…”

Section: Calculation Of Fission Cross Sectionsmentioning

confidence: 99%

MCNP6 updated proton-induced fission cross section calculations at intermediate energies

2017

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Abstract. MCNP6 has been Validated and Verified against intermediate-and high-energy fission crosssection experimental data. Recent improvements contained in CEM03.03F and MCNP6-F to consider precompound emission of heavy clusters up to 28 Mg has necessitated a re-calculation of fission cross sections. With our re-calculation, we find that CEM03.03F, which is used in MCNP6-F, predicts fission cross sections in good agreement with available experimental data for reactions induced by protons on both subactinide and actinide nuclei at incident energies from several tens of MeV to several GeV.

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MCNP6 Fission Cross Section Calculations at Intermediate and High Energies

Cited by 7 publications

References 8 publications

Extension of the Liège intranuclear-cascade model to reactions induced by light nuclei

Extension of the Liège intranuclear-cascade model to reactions induced by light nuclei

MCNP6 fragmentation of light nuclei at intermediate energies

MCNP6 updated proton-induced fission cross section calculations at intermediate energies

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