Measurement of Fragment Mass Dependent Kinetic Energy and Neutron Multiplicity for Thermal Neutron Induced Fission of Plutonium-239.
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- NISHIO Katsuhisa
- Department of Nuclear Engineering, Kyoto University
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- NAKAGOME Yoshihiro
- Research Reactor Institute, Kyoto University
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- KANNO Ikuo
- Department of Nuclear Engineering, Kyoto University
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- KIMURA Itsuro
- Department of Nuclear Engineering, Kyoto University
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Abstract
Kinetic energy and neutron multiplicity as a function of fragment mass were measured for the thermal neutron induced fission of 239Pu. By measuring the velocities and energies of two fission fragments simultaneously, both of the pre-neutron emission fragment mass m* and the post-neutron mass m were obtained. The fragment mass dependent neutron multiplicity ν(m*)was deduced by subtracting m from m*. The fragment mass dependent total kinetic energy TKE(m*) was also obtained from this data. The fragment velocity was measured by time-of-flight (TOF) method, for which the start signal was triggered by a very thin plastic scintillation film detector (TFD) and the stop signal was obtained by a silicon surface barrier detector (SSBD) which was also used for the measurement of the fragment kinetic energy.<BR>The present result of ν(m*) is in good agreement with that of Apalin et al. and that in the light fragment region of Fraser et al. The obtained TKE(m*) agrees well with the data of Wagemans et al. A calculation was carried out with the model proposed by Brosa et al. who assumed multichannel fission paths and a random neck rupture. It is seen that the calculated results of both fragment mass dependent kinetic energy and neutron multiplicity represent experimental data well.
Journal
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- Journal of Nuclear Science and Technology
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Journal of Nuclear Science and Technology 32 (5), 404-414, 1995
Atomic Energy Society of Japan
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Details 詳細情報について
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- CRID
- 1390001204094296064
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- NII Article ID
- 10002072501
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- NII Book ID
- AA00703720
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- COI
- 1:CAS:528:DyaK2MXms1aitb0%3D
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- ISSN
- 18811248
- 00223131
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- Text Lang
- en
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed