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AbstractAbstract
[en] V.M. Strutinsky's semi-classical method is the most precise to determine the energy of the different states along the fission way. The double-humped fission barrier explains fission isomerism. V.M. Strutinsky's barrier explains the ''intermediate structure'' observed in the cross section under the threshold; it provides also the observed effect of ''vibrational resonances'' with an interpretation. Taking an asymmetry parameter in consideration, a triple-humped fission barrier seems to be essential now for the light actinides. There is still a microscopic fission barrier to be explained
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Translated from La Recherche (Sep 1982), no. 136 p. 990-1004.
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Journal Article
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Translation
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Aalam Al-Zarra; CODEN AAALE; (no.6); p. 58-77
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AbstractAbstract
No abstract available
Original Title
Barriere de fission de 237Np
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CEA Centre d'Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France). Dept. de Physique Nucleaire; p. 245-246; nd
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Report
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Progress Report
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AbstractAbstract
[en] The most important facts, developments and unsolved problems of the International Symposium on Physics and Chemistry of Fission in Juelich, 1979, are summarized in this paper
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International Atomic Energy Agency, Vienna (Austria); Proceedings series; v. 2 p. 459-476; ISBN 92-0-030180-0; 
; 1980; v. 2 p. 459-476; IAEA; Vienna; International symposium on physics and chemistry of fission; Juelich, Germany, F.R; 14 - 18 May 1979; 32 refs.
; 1980; v. 2 p. 459-476; IAEA; Vienna; International symposium on physics and chemistry of fission; Juelich, Germany, F.R; 14 - 18 May 1979; 32 refs.
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Book
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Conference
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AbstractAbstract
No abstract available
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27. Annual Meeting of the Brazilian Society for the Advancement of Science; Belo Horizonte, Minas Gerais, Brazil; 9 - 16 Jul 1975; Published in summary form only.
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Journal Article
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Conference
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Cienc. Cult. (Sao Paulo); v. 27(7); p. 39
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AbstractAbstract
[en] A simplified quantum-mechanical treatment is presented for describing the dynamics of nuclear fission. The collective Hamiltonian is assumed to be two dimensional and the reduced mass is allowed to vary with the co-ordinates. The corresponding scattering problem can be cast into a system of coupled one-dimensional equations after a proper transformation of the co-ordinates. Such system of coupled equations can be decoupled by replacing the coupling matrix elements by a non-local interaction, which can be rendered local after employing the effective mass approximation. As a consequence this gives rise to an effective potential barrier which, in general, involves intermediate potential wells that can accommodate quasi-bound states. Parameterization of such multi-humped barrier is made in terms of Wood-Saxon functions, which not only satisfy the physical requirements, but also amenable to analytic solutions. The corresponding penetrability factor shows resonance structure which is superimposed to a slowly varying rounded step function. The resonance indicate the quasibound states that are set up in the intermediate wells, and their widths are inversely proportional to the half life times of the parent nucleus that is trapped in such resonant states
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Journal Article
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Arab Journal of Nuclear Sciences and Applications; v. 12(1); p. 211-226
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Blons, J.; Mazur, C.; Paya, D.; Ribrag, M.; Weigmann, H.
CEA Centre d'Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France). Service de la Metrologie et de la Physique Neutroniques Fondamentales1980
CEA Centre d'Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France). Service de la Metrologie et de la Physique Neutroniques Fondamentales1980
AbstractAbstract
No abstract available
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Sep 1980; 1 p; 5. National Soviet conference on neutron physics; Kiev, Ukrainian SSR; 15 - 19 Sep 1980; Published in summary form only.
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Report
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[en] A method is suggested for the separation of the overlapping proton and neutron closed-shell effects on experimental fission barriers at Z = 82 and N = 126. (author)
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11 refs.
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Journal Article
Journal
Canadian Journal of Physics; v. 54(20); p. 2056-2059
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AbstractAbstract
No abstract available
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Engelbrecht, C.A.; Lemmer, R.H.; Sellschop, J.P.F.; Toepffer, C. (eds.); University of the Witwatersrand, Johannesburg (South Africa). Nuclear Physics Research Unit; p. 12; ISBN 0 85494 515 6; ; 1978; p. 12; International conference on dynamical properties of heavy-ion reactions; Johannesburg, South Africa; 1 - 3 Aug 1978; Published in summary form only.
; 1978; p. 12; International conference on dynamical properties of heavy-ion reactions; Johannesburg, South Africa; 1 - 3 Aug 1978; Published in summary form only.
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Miscellaneous
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AbstractAbstract
[en] In this work, it is made an analysis of the beam energy spectrure of the linear electron accelerator (28 MeV) of the Centro Brasileiro de Pesquisas Fisicas. Methods and precision of measurements are discussed. Present and future work are also presented and discussed. (A.C.A.S.)
[pt]
Neste trabalho e feita uma analise do espectro de energia do feixe do acelerador linear do eletrons de 28 MeV do CBPF. Sao discutidos metodos e precisao das medidas, apresentados resultados dos trabalhos, apresentados resultados dos trabalhos em andamento e possibilidades de utilizacao futura. (A.C.A.S.)Original Title
Analise do espectro de energia do feixe do acelerador linear de eletrons de 28 MeV do Centro Brasileiro de Pesquisas Fisicas
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Sociedade Brasileira de Fisica, Sao Paulo, SP (Brazil); 187 p; 1980; p. 102-110; 3. Workshop on Nuclear Physics in Brazil; Cambuquira, MG (Brazil); 31 Aug - 4 Sep 1980; Available from the Library of the Comissao Nacional de Energia Nuclear, RJ, Brazil
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Miscellaneous
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AbstractAbstract
No abstract available
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de Boer, J. (ed.); p. 311-350; 1973; American Elsevier Publishing Co., Inc; New York; International conference on nuclear physics; Munich, F.R. Germany; 27 Aug 1973
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Book
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Conference
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