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Approaching the precursor nuclei of the third r-process peak with RIBs
The rapid neutron nucleosynthesis process involves an enormous amount of very exotic neutron-rich nuclei, which represent a theoretical and experimental challenge. Two of the main decay properties that affect the final abundance distribution the most are half-lives and neutron branching ratios. Usin...
| Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Lenguaje: | eng |
| Publicado: |
2013
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1088/1742-6596/665/1/012045 http://cds.cern.ch/record/1600441 |
| _version_ | 1780931422461100032 |
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| author | Domingo-Pardo, C. Caballero-Folch, R. Agramunt, J. Algora, A. Arcones, A. Ameil, F. Ayyad, Y. Benlliure, J. Bowry, M. Calvino, F. Cano-Ott, D. Cortes, G. Davinson, T. Dillmann, I. Estrade, A. Evdokimov, A. Faestermann, T. Farinon, F. Galaviz, D. Garcia-Rios, A. Geissel, H. Gelletly, W. Gernhauser, R. Gomez-Hornillos, M.B. Guerrero, C. Heil, M. Hinke, C. Knobel, R. Kojouharov, I. Kurcewicz, J. Kurz, N. Litvinov, Y. Maier, L. Marganiec, J. Marta, M. Martinez, T. Martinez-Pinedo, G. Meyer, B.S. Montes, F. Mukha, I. Napoli, D.R. Nociforo, Ch. Paradela, C. Pietri, S. Podolyak, Z. Prochazka, A. Rice, S. Riego, A. Rubio, B. Schaffner, H. Scheidenberger, Ch. Smith, K. Sokol, E. Steiger, K. Sun, B. Tain, J.L. Takechi, M. Testov, D. Weick, H. Wilson, E. Winfield, J.S. Wood, R. Woods, P. Yeremin, A. |
| author_facet | Domingo-Pardo, C. Caballero-Folch, R. Agramunt, J. Algora, A. Arcones, A. Ameil, F. Ayyad, Y. Benlliure, J. Bowry, M. Calvino, F. Cano-Ott, D. Cortes, G. Davinson, T. Dillmann, I. Estrade, A. Evdokimov, A. Faestermann, T. Farinon, F. Galaviz, D. Garcia-Rios, A. Geissel, H. Gelletly, W. Gernhauser, R. Gomez-Hornillos, M.B. Guerrero, C. Heil, M. Hinke, C. Knobel, R. Kojouharov, I. Kurcewicz, J. Kurz, N. Litvinov, Y. Maier, L. Marganiec, J. Marta, M. Martinez, T. Martinez-Pinedo, G. Meyer, B.S. Montes, F. Mukha, I. Napoli, D.R. Nociforo, Ch. Paradela, C. Pietri, S. Podolyak, Z. Prochazka, A. Rice, S. Riego, A. Rubio, B. Schaffner, H. Scheidenberger, Ch. Smith, K. Sokol, E. Steiger, K. Sun, B. Tain, J.L. Takechi, M. Testov, D. Weick, H. Wilson, E. Winfield, J.S. Wood, R. Woods, P. Yeremin, A. |
| author_sort | Domingo-Pardo, C. |
| collection | CERN |
| description | The rapid neutron nucleosynthesis process involves an enormous amount of very exotic neutron-rich nuclei, which represent a theoretical and experimental challenge. Two of the main decay properties that affect the final abundance distribution the most are half-lives and neutron branching ratios. Using fragmentation of a primary 238U beam at GSI we were able to measure such properties for several neutron-rich nuclei from 208Hg to 218Pb. This contribution provides a short update on the status of the data analysis of this experiment, together with a compilation of the latest results published in this mass region, both experimental and theoretical. The impact of the uncertainties connected with the beta-decay rates and with beta-delayed neutron emission is illustrated on the basis of r-process network calculations. In order to obtain a reasonable reproduction of the third r-process peak, it is expected that both half-lives and neutron branching ratios are substantially smaller, than those based on FRDM+QRPA, commonly used in r-process model calculations. Further measurements around N ~ 126 are required for a reliable modelling of the underlying nuclear structure, and for performing more realistic r-process abundance calculations. |
| id | cern-1600441 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2013 |
| record_format | invenio |
| spelling | cern-16004412023-06-20T02:09:09Zdoi:10.1088/1742-6596/665/1/012045http://cds.cern.ch/record/1600441engDomingo-Pardo, C.Caballero-Folch, R.Agramunt, J.Algora, A.Arcones, A.Ameil, F.Ayyad, Y.Benlliure, J.Bowry, M.Calvino, F.Cano-Ott, D.Cortes, G.Davinson, T.Dillmann, I.Estrade, A.Evdokimov, A.Faestermann, T.Farinon, F.Galaviz, D.Garcia-Rios, A.Geissel, H.Gelletly, W.Gernhauser, R.Gomez-Hornillos, M.B.Guerrero, C.Heil, M.Hinke, C.Knobel, R.Kojouharov, I.Kurcewicz, J.Kurz, N.Litvinov, Y.Maier, L.Marganiec, J.Marta, M.Martinez, T.Martinez-Pinedo, G.Meyer, B.S.Montes, F.Mukha, I.Napoli, D.R.Nociforo, Ch.Paradela, C.Pietri, S.Podolyak, Z.Prochazka, A.Rice, S.Riego, A.Rubio, B.Schaffner, H.Scheidenberger, Ch.Smith, K.Sokol, E.Steiger, K.Sun, B.Tain, J.L.Takechi, M.Testov, D.Weick, H.Wilson, E.Winfield, J.S.Wood, R.Woods, P.Yeremin, A.Approaching the precursor nuclei of the third r-process peak with RIBsnucl-exNuclear Physics - ExperimentThe rapid neutron nucleosynthesis process involves an enormous amount of very exotic neutron-rich nuclei, which represent a theoretical and experimental challenge. Two of the main decay properties that affect the final abundance distribution the most are half-lives and neutron branching ratios. Using fragmentation of a primary 238U beam at GSI we were able to measure such properties for several neutron-rich nuclei from 208Hg to 218Pb. This contribution provides a short update on the status of the data analysis of this experiment, together with a compilation of the latest results published in this mass region, both experimental and theoretical. The impact of the uncertainties connected with the beta-decay rates and with beta-delayed neutron emission is illustrated on the basis of r-process network calculations. In order to obtain a reasonable reproduction of the third r-process peak, it is expected that both half-lives and neutron branching ratios are substantially smaller, than those based on FRDM+QRPA, commonly used in r-process model calculations. Further measurements around N ~ 126 are required for a reliable modelling of the underlying nuclear structure, and for performing more realistic r-process abundance calculations.The rapid neutron nucleosynthesis process involves an enormous amount of very exotic neutron-rich nuclei, which represent a theoretical and experimental challenge. Two of the main decay properties that affect the final abundance distribution the most are half-lives and neutron branching ratios. Using fragmentation of a primary $^{238}$U beam at GSI we were able to measure such properties for several neutron-rich nuclei from $^{208}$Hg to $^{218}$Pb. This contribution provides a short update on the status of the data analysis of this experiment, together with a compilation of the latest results published in this mass region, both experimental and theoretical. The impact of the uncertainties connected with the beta-decay rates and with beta-delayed neutron emission is illustrated on the basis of $r$-process network calculations. In order to obtain a reasonable reproduction of the third $r$-process peak, it is expected that both half-lives and neutron branching ratios are substantially smaller, than those based on FRDM+QRPA, commonly used in $r$-process model calculations. Further measurements around $N\sim126$ are required for a reliable modelling of the underlying nuclear structure, and for performing more realistic $r$-process abundance calculations.arXiv:1309.3047oai:cds.cern.ch:16004412013-09-12 |
| spellingShingle | nucl-ex Nuclear Physics - Experiment Domingo-Pardo, C. Caballero-Folch, R. Agramunt, J. Algora, A. Arcones, A. Ameil, F. Ayyad, Y. Benlliure, J. Bowry, M. Calvino, F. Cano-Ott, D. Cortes, G. Davinson, T. Dillmann, I. Estrade, A. Evdokimov, A. Faestermann, T. Farinon, F. Galaviz, D. Garcia-Rios, A. Geissel, H. Gelletly, W. Gernhauser, R. Gomez-Hornillos, M.B. Guerrero, C. Heil, M. Hinke, C. Knobel, R. Kojouharov, I. Kurcewicz, J. Kurz, N. Litvinov, Y. Maier, L. Marganiec, J. Marta, M. Martinez, T. Martinez-Pinedo, G. Meyer, B.S. Montes, F. Mukha, I. Napoli, D.R. Nociforo, Ch. Paradela, C. Pietri, S. Podolyak, Z. Prochazka, A. Rice, S. Riego, A. Rubio, B. Schaffner, H. Scheidenberger, Ch. Smith, K. Sokol, E. Steiger, K. Sun, B. Tain, J.L. Takechi, M. Testov, D. Weick, H. Wilson, E. Winfield, J.S. Wood, R. Woods, P. Yeremin, A. Approaching the precursor nuclei of the third r-process peak with RIBs |
| title | Approaching the precursor nuclei of the third r-process peak with RIBs |
| title_full | Approaching the precursor nuclei of the third r-process peak with RIBs |
| title_fullStr | Approaching the precursor nuclei of the third r-process peak with RIBs |
| title_full_unstemmed | Approaching the precursor nuclei of the third r-process peak with RIBs |
| title_short | Approaching the precursor nuclei of the third r-process peak with RIBs |
| title_sort | approaching the precursor nuclei of the third r-process peak with ribs |
| topic | nucl-ex Nuclear Physics - Experiment |
| url | https://dx.doi.org/10.1088/1742-6596/665/1/012045 http://cds.cern.ch/record/1600441 |
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