Measurement and Analysis of Neutrons Emitted from Fission of Transuranium Nuclides
超铀核素裂变中子的测量与分析
基本信息
- 批准号:07458103
- 负责人:
- 金额:$ 4.61万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (B)
- 财政年份:1995
- 资助国家:日本
- 起止时间:1995 至 1997
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
1.Average number of the prompt neutrons per a thermal neutron fission of Pu-239 was obtained as a function of fragment mass number by means of simultaneous measurement of velocities and energies of two fission fragments. The result agreed with the predicated value by using the Brosa's multimode fission model.2.A new simultaneous measurement system of fission fragments and prompt neutrons was designed and completed. Its characteristics were obtained.3.By making use of a supermirror neutron guide tube of Kyoto University Reactor (KUR), a fission chamber with a thin sample layr and the system described above, the mass and the energy of fission fragments and the number and the energy of prompt neutrons for U-235 and U-233 were measured. By using the experimental results, the division of mass and energy in the fission process was investigated. In addition to this, the level density parameters for fission fragment nuclides were obtained by the results.4.A new computer program system for the calculation of prompt fission neutron spectra, and those for Np-237, Cm-242, -243, -244, -246, -248 were obtained by this system.5.The Brosa's multimode fission model was applied to calculate the prompt fission neutron spectra. The obtained spectrum of the fast neutron fission of Np-237 satisfactorily agreed with the measured.6.By using Moriyama's formula and some experimental data, the systematics of delayd neutron yield of actinoide nuclides were investigated and applied to explain the reason of their decrement for higher actinoids.
1.通过同时测量两个裂变碎片的速度和能量,得到了Pu-239一次热中子裂变的平均提示中子数与裂变碎片质量数的函数关系。结果与Brosa多模裂变模型的预测值一致。设计并完成了一套新的裂变破片和瞬发中子同步测量系统。得到了其特性。利用京都大学反应堆(KUR)的超镜中子导管、薄样品层裂变室和上述系统,测量了U-235和U-233裂变碎片的质量和能量以及提示中子的数量和能量。利用实验结果,对裂变过程中的质能划分进行了研究。此外,还得到了裂变碎片核素的能级密度参数。利用该系统获得了一个新的计算裂变中子能谱的计算机程序系统,并计算了Np-237、Cm-242、-243、-244、-246、-248的中子能谱。应用Brosa多模裂变模型计算了瞬发裂变中子能谱。所得的Np-237的快中子裂变谱与测量值吻合得很好。利用Moriyama公式和一些实验数据,研究了锕系核素延迟中子产率的系统分布,并应用于解释高锕系核素延迟中子产率衰减的原因。
项目成果
期刊论文数量(22)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
木村 逸郎: "核分裂の実験的研究の現状" 日本原子力学会誌. 39・9. 733-738 (1997)
木村一郎:“核裂变实验研究的现状”日本原子能学会杂志39・9(1997)。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
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- 通讯作者:
K.Nishio: "A System for Correlation Measurement of Fission Fragments and Prompt Neutrons for Thermal Neutron Induced Fission" Nuclear Instruments and Methods in Phys.Res.A385. 171-178 (1997)
K.Nishio:“用于热中子诱发裂变的裂变碎片和瞬发中子的相关测量系统”核仪器和方法,Phys.Res.A385。
- DOI:
- 发表时间:
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- 影响因子:0
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- 通讯作者:
K.Nishio: "Measurement of Fragment Mass Dependent Kinetic Energy and Neutron Multiplicity for Thermal Induced Fission of Pu-239" Journal of Nuclear Science and Technology. 32. 404-414 (1995)
K.Nishio:“测量 Pu-239 热诱导裂变的碎片质量相关动能和中子多重性”核科学与技术杂志。
- DOI:
- 发表时间:
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- 影响因子:0
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- 通讯作者:
K.Nishio, Y.Nakagome, I.Kimura, et al.: "Multiplicity and Energy of Neutrons from ^<235>U (n, f) Fission Fragment" Nuclear Physics.
K.Nishio、Y.Nakagome、I.Kimura 等人:“^<235>U (n, f) 裂变碎片中子的多重性和能量”核物理。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
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- 通讯作者:
K.Nishio: "Measurement of Level Density Paramenters of Fission Fragments Following Thermal Neutron Induced Fission of U-235" Journal of Nuclear Science and Technology. 34・5. 439-444 (1997)
K.Nishio:“U-235热中子诱发裂变后裂变碎片的能级密度参数的测量”核科学与技术杂志34・5(1997)。
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- 影响因子:0
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KIMURA Itsuro其他文献
KIMURA Itsuro的其他文献
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{{ truncateString('KIMURA Itsuro', 18)}}的其他基金
Development of Plasma Torches with High Performance for Scramjet Combustors.
超燃冲压发动机燃烧室高性能等离子炬的开发。
- 批准号:
07555608 - 财政年份:1995
- 资助金额:
$ 4.61万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Numerical and Experimental Studies on Non Equilibrium Flows in MPD Arc Jets.
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07651128 - 财政年份:1995
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New Development of Material Science Using Particle Beams
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07045025 - 财政年份:1995
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$ 4.61万 - 项目类别:
Grant-in-Aid for international Scientific Research
Basic Study on Transmutation Method of Long-Iived Radioactive Waste
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06302081 - 财政年份:1994
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$ 4.61万 - 项目类别:
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Control of Bad Emissions from Flames by Corona Discharges
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05650938 - 财政年份:1993
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$ 4.61万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)
Study on Irradiation Effects of Semiconductors by Measurement of Deep Level Defect
深能级缺陷测量研究半导体辐照效应
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03452301 - 财政年份:1991
- 资助金额:
$ 4.61万 - 项目类别:
Grant-in-Aid for General Scientific Research (B)
Plasma Jet Flame-Stabilization Mechanism in Supersonic Combustion
超音速燃烧中的等离子射流稳焰机制
- 批准号:
03650057 - 财政年份:1991
- 资助金额:
$ 4.61万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)
Thorium Fuel Cycle as a Promising Energy Source in and after 21st Century
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- 批准号:
02302089 - 财政年份:1990
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$ 4.61万 - 项目类别:
Grant-in-Aid for Co-operative Research (A)
CONPREHENSIVE STUDY ON THORIUM AS AN ENERGY SOURCE IN 21 CENTURY
21世纪钍能源的综合研究
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63302067 - 财政年份:1988
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$ 4.61万 - 项目类别:
Grant-in-Aid for Co-operative Research (A)
Research on the Development of Plasma Jets Using Solis Fuels
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59850014 - 财政年份:1984
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$ 4.61万 - 项目类别:
Grant-in-Aid for Developmental Scientific Research
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