New Approach to Nuclear Photofission Reactions above 0.15 GeV
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| Format: | Artículo científico |
| Langue: | en |
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Sociedade Brasileira de Física
2004
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| _version_ | 1876432345540591616 |
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| author | S. B. Duarte |
| author_facet | S. B. Duarte |
| contents | New Approach to Nuclear Photofission Reactions above 0.15 GeV S. B. Duarte O. A. P. Tavares A. Deppman V.P. Likhachev Física, Astronomía y Matemáticas A simple approach to evaluate nuclear photofissilities at energies above the pion photoproduction threshold hasbeen developed. It is based on the current, two-step model for intermediate-energy photonuclear reactions, i.e.a photon-induced intranuclear cascade followed by a fission-evaporation competition process for the excited,post-cascade residual nucleus. The calculation method (semiempirical by nature) shows that fissility (i.e., totalfission probability) is governed by two basic quantities, namely, the first-chance fission probability for theaverage cascade residual, and a parameter which defines an evaporative sequence of residuals in which theaverage, equivalent chance-fission probabilities of nuclides belonging to the same generation are located. ThenatPb photofissility data measured recently in the range » 0:2 ¡ 3:8 GeV at the Thomas Jefferson Laboratorycould be explained very satisfactorily by the present approach. 2004 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46434557 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.3A Vol.34 |
| format | Artículo científico |
| id | redalyc_46434557 |
| institution | Redalyc |
| language | en |
| publishDate | 2004 |
| publisher | Sociedade Brasileira de Física |
| spellingShingle | New Approach to Nuclear Photofission Reactions above 0.15 GeV S. B. Duarte Física, Astronomía y Matemáticas New Approach to Nuclear Photofission Reactions above 0.15 GeV S. B. Duarte O. A. P. Tavares A. Deppman V.P. Likhachev Física, Astronomía y Matemáticas A simple approach to evaluate nuclear photofissilities at energies above the pion photoproduction threshold hasbeen developed. It is based on the current, two-step model for intermediate-energy photonuclear reactions, i.e.a photon-induced intranuclear cascade followed by a fission-evaporation competition process for the excited,post-cascade residual nucleus. The calculation method (semiempirical by nature) shows that fissility (i.e., totalfission probability) is governed by two basic quantities, namely, the first-chance fission probability for theaverage cascade residual, and a parameter which defines an evaporative sequence of residuals in which theaverage, equivalent chance-fission probabilities of nuclides belonging to the same generation are located. ThenatPb photofissility data measured recently in the range » 0:2 ¡ 3:8 GeV at the Thomas Jefferson Laboratorycould be explained very satisfactorily by the present approach. 2004 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46434557 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.3A Vol.34 |
| title | New Approach to Nuclear Photofission Reactions above 0.15 GeV |
| topic | Física, Astronomía y Matemáticas |
| url | https://www.redalyc.org/articulo.oa?id=46434557 |