THE EVAPORATION MODEL THEORY FOR THE FISSION PROMPT NEUTRON SPECTRUM OF HEAVY NUCLEI

HU JI-MIN; WANG ZHENG-SHING

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《中国物理C》（英文）编辑部

2024年10月30日

Chinese Physics C> 1979, Vol. 3> Issue(6) : 772-783

THE EVAPORATION MODEL THEORY FOR THE FISSION PROMPT NEUTRON SPECTRUM OF HEAVY NUCLEI

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Abstract：
The fission prompt neutron spectrum,the average number of neutrons emitted per fission and the average energies of neutrons for neutron-induced fission of ura-nium and plutonium isotopes were calculated,using evaporation model with a univer-sal pre-scission neutron component of about 10% added empirically.General appro-ximation formulae for the average number of neutrons per fisson and the averageneutron energy were derived and Terrell's formula was rederived theoretically without adjustable constants.In the incident neutron energy range 0—18 MeV considered,the agreement between calculated and experimental results is satisfactory.NUCLEAR FISSION:U,Pu(n,f);energy range 0—18 MeV;fission prompt neutron spectrum,average number of emittedneutrons and neutron average energy calculated.

[1]	JIA Ying , BAO Jing-Dong . Effect of Friction on Neutron Emission in Fission of Heavy Nuclei. Chinese Physics C, 2006, 30(9): 868-871.
[2]	HAN Yin-Lu . Theoretical Analysis of Double Differential Cross Sections for n+ ²³⁸U Reaction. Chinese Physics C, 2004, 28(2): 177-180.
[3]	BAO Shang-Lian , LIU Wen-Long , WEN Chen-Lin , FAN Tie-Shuan , , . Measurement of ²⁴⁸Cm/²⁵²Cf Cf Spontaneous Prompt Fission Neutron Spectrum. Chinese Physics C, 2001, 25(4): 304-308.
[4]	YUAN ShuangGui , YANG WeiFan , XU YanBing , PAN QiangYan , HE JianJun , XIONG Bing , LI YingJun . Observation of β-Delayed Fission from ²³⁰Ac. Chinese Physics C, 2000, 24(12): 1191-1193.
[5]	Fan Tieshuan , Hu Jimin , Bao Shanglian . Multichannel Fission Model Applied to ^223,235,238U (n,f). Chinese Physics C, 1996, 20(5): 422-429.
[6]	Wu Heyu , Dai Guangxi , He Zhiyong , Qi Yujin , Li Zuyu , Jin Genming , Luo Qingzheng , Duan Limin , Wen Wanxin , Zhang Baoguo . Evolution from Cascade Fission to Prompt Multifragmentation with Increasing Excitation Energy. Chinese Physics C, 1995, 19(8): 739-747.
[7]	Han Hongyin , Li Anli , Chen Jinhua , Huang Shengnian . Behaviour of Prompt Gamma-Ray Emission in ColdFission of ²⁵²Cf. Chinese Physics C, 1995, 19(1): 8-15.
[8]	Feng Renfa , Wu Xizhen , Zhuo Yizhong . On Theoretical Analysis of Kramers' Stationary Solution in the Diffusion Model of Fission. Chinese Physics C, 1994, 18(4): 361-365.
[9]	SUN Zhe-Min , FENG Ren-Fa , WU Xi-Zhen , ZHU Yi-Zhong . Overshooting and Prescission Neutron Multiplicity in Nuclear Fission. Chinese Physics C, 1992, 16(6): 571-576.
[10]	ZHANG Li . A Possible Island of Beta-Delayed Neutron Precursors in Heavy Nucleus Region. Chinese Physics C, 1991, 15(2): 187-190.
[11]	CHEN Xin-Yi , HU Ji-Min . Calculation of Nuclear Fission Using a Macroscopic Model. Chinese Physics C, 1991, 15(3): 279-283.
[12]	WU Xi-Zhen , LI Zhu-Xia , ZHUO Yi-Zhong . QUANTUM BROWNIAN MOTION AND NUCLEAR FISSION. Chinese Physics C, 1990, 14(4): 345-351.
[13]	ZHANG Zhen , SHEN Wen-Qing , ZHU Yong-Tai . THE CALCULATION OF THE CROSS SECTIONS OF THE COMPLETE FUSION AND THE NEUTRON EVAPORATION FOR HEAVY SYSTEM. Chinese Physics C, 1988, 12(6): 833-839.
[14]	FENG Ren-Fa , ZHUO Yi-Zhong , LI Jun-Qing . ANALYTICAL MODEL FOR THE CALCULATION OF FISSION RATE. Chinese Physics C, 1984, 8(4): 453-460.
[15]	CAI Chong-Hai , ZHUO Yi-Zhong . CALCULATION OF MUON FINAL PROBABILITIES AFTER THE PROMPT FISSION OF MUONIC ATOM. Chinese Physics C, 1983, 7(2): 203-216.
[16]	HE Ze-Jun , LI Pan-Lin , ZHANG Jia-Ju . DIFFUSION MODEL OF HEAVY NUCLEUS FISSION. Chinese Physics C, 1983, 7(5): 611-617.
[17]	Qiu Xi-jun , Song Hong-qiu , Huang Wei-zhi , Wang Zi-xing . A MODEL OF FISSION. Chinese Physics C, 1980, 4(5): 680-682.
[18]	He Ze-jun , Li Pan-lin . TRANSPORT MODEL OF HEAVY NUCLEUS FISSION. Chinese Physics C, 1980, 4(5): 640-648.
[19]	LIU GOU-XING , WANG ZJO-GOU , YIN SHU-ZHI , HAO BIN-GAN , YUAN SHUANG-GUI , XIA XING-SHUO . ANGULAR DISTRIBUTIONS OF FISSION FRAGMENTS AND THE SHAPES OF THE SADDLE POINT OF COMPOUND NUCLEI. Chinese Physics C, 1978, 2(3): 242-248.
[20]	HE ZE-JUN , LEE PAN-LIN . THE MICROSCOPIC CALCULATION OF THE STATISTICAL THEORY OF NUCLEAR FISSION. Chinese Physics C, 1978, 2(4): 350-349.

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HU JI-MIN and WANG ZHENG-SHING. THE EVAPORATION MODEL THEORY FOR THE FISSION PROMPT NEUTRON SPECTRUM OF HEAVY NUCLEI[J]. Chinese Physics C, 1979, 3(6): 772-783.

HU JI-MIN and WANG ZHENG-SHING. THE EVAPORATION MODEL THEORY FOR THE FISSION PROMPT NEUTRON SPECTRUM OF HEAVY NUCLEI[J]. Chinese Physics C, 1979, 3(6): 772-783. shu

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Received: 1978-08-08
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

THE EVAPORATION MODEL THEORY FOR THE FISSION PROMPT NEUTRON SPECTRUM OF HEAVY NUCLEI

HU JI-MIN
WANG ZHENG-SHING

Received Date: 1978-08-08
Accepted Date: 1900-01-01
Available Online: 1979-12-05

Abstract: The fission prompt neutron spectrum,the average number of neutrons emitted per fission and the average energies of neutrons for neutron-induced fission of ura-nium and plutonium isotopes were calculated,using evaporation model with a univer-sal pre-scission neutron component of about 10% added empirically.General appro-ximation formulae for the average number of neutrons per fisson and the averageneutron energy were derived and Terrell's formula was rederived theoretically without adjustable constants.In the incident neutron energy range 0—18 MeV considered,the agreement between calculated and experimental results is satisfactory.NUCLEAR FISSION:U,Pu(n,f);energy range 0—18 MeV;fission prompt neutron spectrum,average number of emittedneutrons and neutron average energy calculated.