Quantum molecular dynamics calculation of light-ion production in neutron-induced reactions at intermediate energies

Y. Watanabe; D. N. Kadrev

doi:10.1093/rpd/ncm010

Quantum molecular dynamics calculation of light-ion production in neutron-induced reactions at intermediate energies

Y. Watanabe, D. N. Kadrev

Engineering Science for Advanced energy system

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

A quantum molecular dynamics (QMD) simulation is applied to light-ion production in neutron-induced reactions on O, Si and Fe at E_n = 96 MeV. The generalized evaporation model (GEM) is used to account for statistical decay processes after the QMD stage. Good agreement with the experimental energy spectra is obtained for proton emission, but the calculation exhibits remarkable underestimation for pre-equilibrium emission of light clusters, i.e. d, t, ³He and ⁴He. It is found that the underestimation is improved except in the region around the high energy end of the emission spectra by implementation of a phenomenological coalescence model into the QMD under the assumption that these light clusters are formed in the nuclear surface region by a leading nucleon that is ready to leave the nucleus.

Original language	English
Pages (from-to)	40-44
Number of pages	5
Journal	Radiation Protection Dosimetry
Volume	126
Issue number	1-4
DOIs	https://doi.org/10.1093/rpd/ncm010
Publication status	Published - 2007

All Science Journal Classification (ASJC) codes

Radiation
Radiological and Ultrasound Technology
Radiology Nuclear Medicine and imaging
Public Health, Environmental and Occupational Health

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1093/rpd/ncm010

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title = "Quantum molecular dynamics calculation of light-ion production in neutron-induced reactions at intermediate energies",

abstract = "A quantum molecular dynamics (QMD) simulation is applied to light-ion production in neutron-induced reactions on O, Si and Fe at En = 96 MeV. The generalized evaporation model (GEM) is used to account for statistical decay processes after the QMD stage. Good agreement with the experimental energy spectra is obtained for proton emission, but the calculation exhibits remarkable underestimation for pre-equilibrium emission of light clusters, i.e. d, t, 3He and 4He. It is found that the underestimation is improved except in the region around the high energy end of the emission spectra by implementation of a phenomenological coalescence model into the QMD under the assumption that these light clusters are formed in the nuclear surface region by a leading nucleon that is ready to leave the nucleus.",

author = "Y. Watanabe and Kadrev, {D. N.}",

note = "Funding Information: The authors would like to thank Dr K. Niita for valuable discussions and encouragement. D.N.K. is grateful to the Japan Society for the Promotion of Science (JSPS) for a postdoctoral fellowship. This work is partly supported by the Grants-in-Aid (No.17-05374) for Scientific Research from JSPS.",

year = "2007",

doi = "10.1093/rpd/ncm010",

language = "English",

volume = "126",

pages = "40--44",

journal = "Radiation Protection Dosimetry",

issn = "0144-8420",

publisher = "Oxford University Press",

number = "1-4",

}

TY - JOUR

T1 - Quantum molecular dynamics calculation of light-ion production in neutron-induced reactions at intermediate energies

AU - Watanabe, Y.

AU - Kadrev, D. N.

N1 - Funding Information: The authors would like to thank Dr K. Niita for valuable discussions and encouragement. D.N.K. is grateful to the Japan Society for the Promotion of Science (JSPS) for a postdoctoral fellowship. This work is partly supported by the Grants-in-Aid (No.17-05374) for Scientific Research from JSPS.

PY - 2007

Y1 - 2007

N2 - A quantum molecular dynamics (QMD) simulation is applied to light-ion production in neutron-induced reactions on O, Si and Fe at En = 96 MeV. The generalized evaporation model (GEM) is used to account for statistical decay processes after the QMD stage. Good agreement with the experimental energy spectra is obtained for proton emission, but the calculation exhibits remarkable underestimation for pre-equilibrium emission of light clusters, i.e. d, t, 3He and 4He. It is found that the underestimation is improved except in the region around the high energy end of the emission spectra by implementation of a phenomenological coalescence model into the QMD under the assumption that these light clusters are formed in the nuclear surface region by a leading nucleon that is ready to leave the nucleus.

AB - A quantum molecular dynamics (QMD) simulation is applied to light-ion production in neutron-induced reactions on O, Si and Fe at En = 96 MeV. The generalized evaporation model (GEM) is used to account for statistical decay processes after the QMD stage. Good agreement with the experimental energy spectra is obtained for proton emission, but the calculation exhibits remarkable underestimation for pre-equilibrium emission of light clusters, i.e. d, t, 3He and 4He. It is found that the underestimation is improved except in the region around the high energy end of the emission spectra by implementation of a phenomenological coalescence model into the QMD under the assumption that these light clusters are formed in the nuclear surface region by a leading nucleon that is ready to leave the nucleus.

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DO - 10.1093/rpd/ncm010

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SN - 0144-8420

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EP - 44

JO - Radiation Protection Dosimetry

JF - Radiation Protection Dosimetry

IS - 1-4

ER -

Quantum molecular dynamics calculation of light-ion production in neutron-induced reactions at intermediate energies

Abstract

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