Actinide neutron-induced fission up to 200 MeV

Vladimir Maslov; Yurij Porodzinskij; Mamoru Baba; Akira Hasegawa

doi:10.1080/00223131.2002.10875045

Actinide neutron-induced fission up to 200 MeV

Vladimir Maslov, Yurij Porodzinskij, Mamoru Baba, Akira Hasegawa

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

5 Citations (Scopus)

Abstract

Neutron-induced fission cross sections of U, Np and Pu target nuclides are analyzed in fission/evaporation approximation up to 200 MeV excitation energy. Damping of collective modes contribution to the level density at excitation energies higher than ~20 MeV for saddle and equilibrium deformations is shown to be essential. Effective estimates of intrinsic level densities are obtained. Actinide first-chance fission cross sections of ²³⁸U(n, f) and ²³⁸U(p, f) reactions are found to be much different. Differences of measured proton- and neutron-induced fission cross sections of ²³⁸U are attributed to the influence of the isovector term of the nucleon-nucleus optical potential.

Original language	English
Pages (from-to)	80-83
Number of pages	4
Journal	journal of nuclear science and technology
Volume	39
DOIs	https://doi.org/10.1080/00223131.2002.10875045
Publication status	Published - 2002 Aug
Externally published	Yes

Keywords

Actinides
Intermediate energies
Nucleon-induced fission

ASJC Scopus subject areas

Nuclear and High Energy Physics
Nuclear Energy and Engineering

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10.1080/00223131.2002.10875045

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title = "Actinide neutron-induced fission up to 200 MeV",

abstract = "Neutron-induced fission cross sections of U, Np and Pu target nuclides are analyzed in fission/evaporation approximation up to 200 MeV excitation energy. Damping of collective modes contribution to the level density at excitation energies higher than ~20 MeV for saddle and equilibrium deformations is shown to be essential. Effective estimates of intrinsic level densities are obtained. Actinide first-chance fission cross sections of 238U(n, f) and 238U(p, f) reactions are found to be much different. Differences of measured proton- and neutron-induced fission cross sections of 238U are attributed to the influence of the isovector term of the nucleon-nucleus optical potential.",

keywords = "Actinides, Intermediate energies, Nucleon-induced fission",

author = "Vladimir Maslov and Yurij Porodzinskij and Mamoru Baba and Akira Hasegawa",

year = "2002",

month = aug,

doi = "10.1080/00223131.2002.10875045",

language = "English",

volume = "39",

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journal = "Journal of Nuclear Science and Technology",

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T1 - Actinide neutron-induced fission up to 200 MeV

AU - Maslov, Vladimir

AU - Porodzinskij, Yurij

AU - Baba, Mamoru

AU - Hasegawa, Akira

PY - 2002/8

Y1 - 2002/8

N2 - Neutron-induced fission cross sections of U, Np and Pu target nuclides are analyzed in fission/evaporation approximation up to 200 MeV excitation energy. Damping of collective modes contribution to the level density at excitation energies higher than ~20 MeV for saddle and equilibrium deformations is shown to be essential. Effective estimates of intrinsic level densities are obtained. Actinide first-chance fission cross sections of 238U(n, f) and 238U(p, f) reactions are found to be much different. Differences of measured proton- and neutron-induced fission cross sections of 238U are attributed to the influence of the isovector term of the nucleon-nucleus optical potential.

AB - Neutron-induced fission cross sections of U, Np and Pu target nuclides are analyzed in fission/evaporation approximation up to 200 MeV excitation energy. Damping of collective modes contribution to the level density at excitation energies higher than ~20 MeV for saddle and equilibrium deformations is shown to be essential. Effective estimates of intrinsic level densities are obtained. Actinide first-chance fission cross sections of 238U(n, f) and 238U(p, f) reactions are found to be much different. Differences of measured proton- and neutron-induced fission cross sections of 238U are attributed to the influence of the isovector term of the nucleon-nucleus optical potential.

KW - Actinides

KW - Intermediate energies

KW - Nucleon-induced fission

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U2 - 10.1080/00223131.2002.10875045

DO - 10.1080/00223131.2002.10875045

M3 - Article

AN - SCOPUS:85010501222

VL - 39

SP - 80

EP - 83

JO - Journal of Nuclear Science and Technology

JF - Journal of Nuclear Science and Technology

SN - 0022-3131

ER -

Actinide neutron-induced fission up to 200 MeV

Abstract

Keywords

ASJC Scopus subject areas

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