Model Calculation and Analysis of n+<SUP>11</SUP>B Reactions below 20MeV

YANG Bin; ZHANG Jing-Shang; SUN Xiu-Quan

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《中国物理C》（英文）编辑部

2024年10月30日

Chinese Physics C> 2001, Vol. 25> Issue(12) : 1171-1177

Model Calculation and Analysis of n+¹¹B Reactions below 20MeV

Department of Physics, Northwest University, Xi′an 710069, China2 China Nuclear Data Center, Beijing 102413, China

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Abstract：
A new model, based on unified Hauser-Feshbach and exciton model, for neutron induced light nucleus reaction has been developed. In case of E n≤20MeV, the total cross section, non-elastic cross section, elastic angular distribution, and the energy-angular spectra of outgoing neutrons in n+¹¹B reaction have been calculated. Especially the double-differential cross section of outgoing neutrons particles of the ¹¹B(n,xn) reaction are calculation. Because of strong recoil effect in light nucleus reactions, the energy balance is strictly takeninto account. In case of ¹¹B, it has more reaction channels and complex reaction mechanism, and the two-body separations are also included in the calculation. This new model describes these characters of ¹¹B very well. From the comparison between calculated results and experimental data, one can see that this model works well in calculation both for cross section and for energy-angular distributions of outgoing neutrons.

References

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. ZHANG JingShang.Nucl.Sci.Eng.,1993,114:552. ZHANGJ ingShang,WEN YuanQi.Chin.J.of Nucl.Phys.,1994,16:153 3. ZHANG JingShang.Fast Neutron Physics,1996,5:2014. ZHANG JingShang.Proc.Int.Conf.on Nuclear Data for Basic Science and Technology.Gatlinburg,Tennesse.,1994,May9–13:9325. ZHANG JingShang,ZHOU SuiJiang.Chin.J.of Nucl.Phys.,1996,18:28 6. Lane R O et al.J.PR/C .,1970,2:2097 7. Auchampaugh G F ,Plattard S,Hill N W .J.NSE .,1979,69:30 8. Coon J H ,Graves E R ,Barschall H H .J.PR .,1952,88:5629. Cook C F ,Bonner T W .J.PR .,1954,94:65110. Mooring F P ,Monahan J E ,Huddleston C M .J. NP .,1966,82:16 11. Baba M et al.C .85SANTA .,1985,1:223

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YANG Bin, ZHANG Jing-Shang and SUN Xiu-Quan. Model Calculation and Analysis of n+¹¹B Reactions below 20MeV[J]. Chinese Physics C, 2001, 25(12): 1171-1177.

YANG Bin, ZHANG Jing-Shang and SUN Xiu-Quan. Model Calculation and Analysis of n+¹¹B Reactions below 20MeV[J]. Chinese Physics C, 2001, 25(12): 1171-1177. shu

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Received: 2000-12-27
Revised: 1900-01-01

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

Model Calculation and Analysis of n+¹¹B Reactions below 20MeV

Corresponding author: YANG Bin,

Department of Physics, Northwest University, Xi′an 710069, China2 China Nuclear Data Center, Beijing 102413, China

Received Date: 2000-12-27
Accepted Date: 1900-01-01
Available Online: 2001-12-05

Abstract: A new model, based on unified Hauser-Feshbach and exciton model, for neutron induced light nucleus reaction has been developed. In case of E n≤20MeV, the total cross section, non-elastic cross section, elastic angular distribution, and the energy-angular spectra of outgoing neutrons in n+¹¹B reaction have been calculated. Especially the double-differential cross section of outgoing neutrons particles of the ¹¹B(n,xn) reaction are calculation. Because of strong recoil effect in light nucleus reactions, the energy balance is strictly takeninto account. In case of ¹¹B, it has more reaction channels and complex reaction mechanism, and the two-body separations are also included in the calculation. This new model describes these characters of ¹¹B very well. From the comparison between calculated results and experimental data, one can see that this model works well in calculation both for cross section and for energy-angular distributions of outgoing neutrons.