--- title: "Absolute Photofission Cross Section of 197Au, natPb, 209Bi, 232Th, 238U and 235U Nuclei by 69-Mev Monochromatic and Pol • CBPF Index" description: "CBPF INDEX es el sistema de seguimiento de la producción científica y tecnológica del CBPF. En él se puede obtener la lista de publicaciones de artículos, libros, informes técnicos, etc. de toda la comunidad del CBPF." canonical_url: "https://index.cbpf.br/es/publicacoes/6ad2a767639f62b11adbb6cb" locale: es meta: "og:description": "CBPF INDEX es el sistema de seguimiento de la producción científica y tecnológica del CBPF. En él se puede obtener la lista de publicaciones de artículos, libros, informes técnicos, etc. de toda la comunidad del CBPF." "og:image": "https://index.cbpf.br/_og/d/c_Item%2Ctitulo_~QWJzb2x1dGUgUGhvdG9maXNzaW9uIENyb3NzIFNlY3Rpb24gb2YgPG1hdGg-MTk3QXU8L21hdGg-LCA8bWF0aD5uYXRQYjwvbWF0aD4sIDxtYXRoPjIwOUJpPC9tYXRoPiwgPG1hdGg-MjMyVGg8L21hdGg-LCA8bWF0aD4yMzhVPC9tYXRoPiBhbmQgPG1hdGg-MjM1VTwvbWF0aD4gTnVjbGVpIGJ5IDxtYXRoPjY5LU1ldjwvbWF0aD4gTW9ub2Nocm9tYXRpYyBhbmQgUG9s%2Ctipo_~Tm90YSBkZSBGw61zaWNh%2Ccor_~I2E4MmMwMA%2Cautores_~Si4gQi4gTWFydGluczsgRS4gTC4gTW9yZWlyYTsgTy4gQS4gUC4gVGF2YXJlczsgSi4gTC4gVmllaXJhOyBMLiBDYXNhbm87IEEuIEQgQW5nZWxvOyBDLiBTY2hhZXJmOyBNLiBMLiBUZXJyYW5vdmE7IEQuIEJhYnVzY2k7IEIuIEdpcm9sYW1p%2Cdetalhe_1990%2Csecao_Publicaciones%2Cp_Ii9lcy9wdWJsaWNhY29lcy82YWQyYTc2NzYzOWY2MmIxMWFkYmI2Y2Ii%2Cs_n7sioP9i4Hc-KVbg.png" "og:image:height": "600" "og:image:type": image/png "og:image:width": "1200" "og:title": "Absolute Photofission Cross Section of 197Au, natPb, 209Bi, 232Th, 238U and 235U Nuclei by 69-Mev Monochromatic and Pol • CBPF Index" "twitter:image": "https://index.cbpf.br/_og/d/c_Item%2Ctitulo_~QWJzb2x1dGUgUGhvdG9maXNzaW9uIENyb3NzIFNlY3Rpb24gb2YgPG1hdGg-MTk3QXU8L21hdGg-LCA8bWF0aD5uYXRQYjwvbWF0aD4sIDxtYXRoPjIwOUJpPC9tYXRoPiwgPG1hdGg-MjMyVGg8L21hdGg-LCA8bWF0aD4yMzhVPC9tYXRoPiBhbmQgPG1hdGg-MjM1VTwvbWF0aD4gTnVjbGVpIGJ5IDxtYXRoPjY5LU1ldjwvbWF0aD4gTW9ub2Nocm9tYXRpYyBhbmQgUG9s%2Ctipo_~Tm90YSBkZSBGw61zaWNh%2Ccor_~I2E4MmMwMA%2Cautores_~Si4gQi4gTWFydGluczsgRS4gTC4gTW9yZWlyYTsgTy4gQS4gUC4gVGF2YXJlczsgSi4gTC4gVmllaXJhOyBMLiBDYXNhbm87IEEuIEQgQW5nZWxvOyBDLiBTY2hhZXJmOyBNLiBMLiBUZXJyYW5vdmE7IEQuIEJhYnVzY2k7IEIuIEdpcm9sYW1p%2Cdetalhe_1990%2Csecao_Publicaciones%2Cp_Ii9lcy9wdWJsaWNhY29lcy82YWQyYTc2NzYzOWY2MmIxMWFkYmI2Y2Ii%2Cs_n7sioP9i4Hc-KVbg.png" --- > Index of every page on this site: [llms.txt](https://index.cbpf.br/llms.txt) **Nota de Física****Publicado** # **Absolute Photofission Cross Section of **197Au\^{197}Au\197Au**, **natPb\^{nat}Pb\natPb**, **209Bi\^{209}Bi\209Bi**, **232Th\^{232}Th\232Th**, **238U\^{238}U\238U** and **235U\^{235}U\235U** Nuclei by **69−Mev\69-Mev\69−Mev** Monochromatic and Pol** **J. B. Martins; E. L. Moreira; O. A. P. Tavares; J. L. Vieira; L. Casano; A. D Angelo; C. Schaerf; M. L. Terranova; D. Babusci; B. Girolami** 1990 [**Descargar PDF **1 MB](https://index.cbpf.br/files/publicacao/6ad2a767639f62b11adbb6cb/pdf) [**Contactar al responsable**](mailto:apub@cbpf.br?subject=Absolute%20Photofission%20Cross%20Section%20of%20%3Cmath%3E197Au%3C%2Fmath%3E%2C%20%3Cmath%3EnatPb%3C%2Fmath%3E%2C%20%3Cmath%3E209Bi%3C%2Fmath%3E%2C%20%3Cmath%3E232Th%3C%2Fmath%3E%2C%20%3Cmath%3E238U%3C%2Fmath%3E%20and%20%3Cmath%3E235U%3C%2Fmath%3E%20Nuclei%20by%20%3Cmath%3E69-Mev%3C%2Fmath%3E%20Monochromatic%20and%20Pol) ## **Datos de la publicación**
Autores
J. B. Martins; E. L. Moreira; O. A. P. Tavares; J. L. Vieira; L. Casano; A. D Angelo; C. Schaerf; M. L. Terranova; D. Babusci; B. Girolami
Tipo
Nota de Física
Estado
Publicado
Fecha de publicación
1990
Descripción
Absolute cross section measurements for the photofission reactions of <math>^{197}Au\,\!</math> , <math>^{nat}pb\,\!</math>, <math>^{209}Bi\,\!</math> , <math>^{232}Th\,\!</math>, <math>^{238}U\,\!</math>, and <math>^{235}U\,\!</math> nuclei have been performed at an incident photon energy of <math>69 MeV\,\!</math> using the monochromatic and polarized LADON photon beams and dielectric fission-track detectors. Nuclear fissility values have been obtained and results are in agreement with those from other laboratories, although in some cases discrepancies are observed between, one other. For nuclei in the region of the actinides the fissility resulted to be <math> \gtrsim 0.4\,\!</math>, while for <math>Au\,\!</math>, <math>Pb\,\!</math> and <math>Bi\,\!</math> nuclei it amounts to <math> \sim 10^{-3} -10^{-2}\,\!</math> only. Results have been interpreted in terms of the primary Levinger's quasi-deuteron nuclear photoabsorption followed by a mechanism of evaporation-fission competition for the excited nuclei. Shell effects have been taken into account, and they are clearly manifested when fissility is evaluated. The influence of photon polarization on photofission of <math>^{238}U\,\!</math> has been also investigated, and results have shown isotropy in the fragment azimuthal distribution.
Año
1990
Número
CBPF-NF-025/90
Vínculo con tesis
No
Vínculo con beca
No
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