Approaching the precursor nuclei of the third r-process peak with RIBs

C. Domingo-Pardo; R. Caballero-Folch; J. Agramunt; A. Algora; A. Arcones; F. Ameil; Y. Ayyad; J. Benlliure; M. Bowry; F. Calviño; D. Cano-Ott; G. Cortés; T. Davinson; I. Dillmann; A. Estrade; A. Evdokimov; T. Faestermann; F. Farinon; D. Galaviz; A. García-Rios; H. Geissel; W. Gelletly; R. Gernhäuser; M. B. Gómez-Hornillos; C. Guerrero; M. Heil; C. Hinke; R. Knöbel; I. Kojouharov; J. Kurcewicz; N. Kurz; Y. Litvinov; L. Maier; J. Marganiec; M. Marta; T. Martínez; G. Martínez-Pinedo; B. S. Meyer; F. Montes; I. Mukha; D. R. Napoli; Ch Nociforo; C. Paradela; S. Pietri; Z. Podolyák; A. Prochazka; S. Rice; A. Riego; B. Rubio; H. Schaffner; Ch Scheidenberger; K. Smith; E. Sokol; K. Steiger; B. Sun; J. L. Taín; M. Takechi; D. Testov; H. Weick; E. Wilson; J. S. Winfield; R. Wood; P. Woods; A. Yeremin

doi:10.1088/1742-6596/665/1/012045

Approaching the precursor nuclei of the third r-process peak with RIBs

C. Domingo-Pardo^*, R. Caballero-Folch, J. Agramunt, A. Algora, A. Arcones, F. Ameil, Y. Ayyad, J. Benlliure, M. Bowry, F. Calviño, D. Cano-Ott, G. Cortés, T. Davinson, I. Dillmann, A. Estrade, A. Evdokimov, T. Faestermann, F. Farinon, D. Galaviz, A. García-RiosH. Geissel, W. Gelletly, R. Gernhäuser, M. B. Gómez-Hornillos, C. Guerrero, M. Heil, C. Hinke, R. Knöbel, I. Kojouharov, J. Kurcewicz, N. Kurz, Y. Litvinov, L. Maier, J. Marganiec, M. Marta, T. Martínez, G. Martínez-Pinedo, B. S. Meyer, F. Montes, I. Mukha, D. R. Napoli, Ch Nociforo, C. Paradela, S. Pietri, Z. Podolyák, A. Prochazka, S. Rice, A. Riego, B. Rubio, H. Schaffner, Ch Scheidenberger, K. Smith, E. Sokol, K. Steiger, B. Sun, J. L. Taín, M. Takechi, D. Testov, H. Weick, E. Wilson, J. S. Winfield, R. Wood, P. Woods, A. Yeremin

^*Corresponding author for this work

School of Physics and Astronomy

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

Abstract

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.

Original language	English
Article number	012045
Journal	Journal of Physics: Conference Series
Volume	665
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/665/1/012045
Publication status	Published - 5 Jan 2016

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10.1088/1742-6596/665/1/012045

jpconf16_665_012045Final published version, 1.01 MB

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Domingo-Pardo, C., Caballero-Folch, R., Agramunt, J., Algora, A., Arcones, A., Ameil, F., Ayyad, Y., Benlliure, J., Bowry, M., Calviño, F., Cano-Ott, D., Cortés, G., Davinson, T., Dillmann, I., Estrade, A., Evdokimov, A., Faestermann, T., Farinon, F., Galaviz, D., ... Yeremin, A. (2016). Approaching the precursor nuclei of the third r-process peak with RIBs. Journal of Physics: Conference Series, 665(1), Article 012045. https://doi.org/10.1088/1742-6596/665/1/012045

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title = "Approaching the precursor nuclei of the third r-process peak with RIBs",

abstract = "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.",

author = "C. Domingo-Pardo and R. Caballero-Folch and J. Agramunt and A. Algora and A. Arcones and F. Ameil and Y. Ayyad and J. Benlliure and M. Bowry and F. Calvi{\~n}o and D. Cano-Ott and G. Cort{\'e}s and T. Davinson and I. Dillmann and A. Estrade and A. Evdokimov and T. Faestermann and F. Farinon and D. Galaviz and A. Garc{\'i}a-Rios and H. Geissel and W. Gelletly and R. Gernh{\"a}user and G{\'o}mez-Hornillos, {M. B.} and C. Guerrero and M. Heil and C. Hinke and R. Kn{\"o}bel and I. Kojouharov and J. Kurcewicz and N. Kurz and Y. Litvinov and L. Maier and J. Marganiec and M. Marta and T. Mart{\'i}nez and G. Mart{\'i}nez-Pinedo and Meyer, {B. S.} and F. Montes and I. Mukha and Napoli, {D. R.} and Ch Nociforo and C. Paradela and S. Pietri and Z. Podoly{\'a}k and A. Prochazka and S. Rice and A. Riego and B. Rubio and H. Schaffner and Ch Scheidenberger and K. Smith and E. Sokol and K. Steiger and B. Sun and Ta{\'i}n, {J. L.} and M. Takechi and D. Testov and H. Weick and E. Wilson and Winfield, {J. S.} and R. Wood and P. Woods and A. Yeremin",

year = "2016",

month = jan,

day = "5",

doi = "10.1088/1742-6596/665/1/012045",

language = "English",

volume = "665",

journal = "Journal of Physics: Conference Series",

issn = "1742-6588",

publisher = "IOP Publishing",

number = "1",

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Domingo-Pardo, C, Caballero-Folch, R, Agramunt, J, Algora, A, Arcones, A, Ameil, F, Ayyad, Y, Benlliure, J, Bowry, M, Calviño, F, Cano-Ott, D, Cortés, G, Davinson, T, Dillmann, I, Estrade, A, Evdokimov, A, Faestermann, T, Farinon, F, Galaviz, D, García-Rios, A, Geissel, H, Gelletly, W, Gernhäuser, R, Gómez-Hornillos, MB, Guerrero, C, Heil, M, Hinke, C, Knöbel, R, Kojouharov, I, Kurcewicz, J, Kurz, N, Litvinov, Y, Maier, L, Marganiec, J, Marta, M, Martínez, T, Martínez-Pinedo, G, Meyer, BS, Montes, F, Mukha, I, Napoli, DR, Nociforo, C, Paradela, C, Pietri, S, Podolyák, Z, Prochazka, A, Rice, S, Riego, A, Rubio, B, Schaffner, H, Scheidenberger, C, Smith, K, Sokol, E, Steiger, K, Sun, B, Taín, JL, Takechi, M, Testov, D, Weick, H, Wilson, E, Winfield, JS, Wood, R, Woods, P & Yeremin, A 2016, 'Approaching the precursor nuclei of the third r-process peak with RIBs', Journal of Physics: Conference Series, vol. 665, no. 1, 012045. https://doi.org/10.1088/1742-6596/665/1/012045

TY - JOUR

T1 - Approaching the precursor nuclei of the third r-process peak with RIBs

AU - Domingo-Pardo, C.

AU - Caballero-Folch, R.

AU - Agramunt, J.

AU - Algora, A.

AU - Arcones, A.

AU - Ameil, F.

AU - Ayyad, Y.

AU - Benlliure, J.

AU - Bowry, M.

AU - Calviño, F.

AU - Cano-Ott, D.

AU - Cortés, G.

AU - Davinson, T.

AU - Dillmann, I.

AU - Estrade, A.

AU - Evdokimov, A.

AU - Faestermann, T.

AU - Farinon, F.

AU - Galaviz, D.

AU - García-Rios, A.

AU - Geissel, H.

AU - Gelletly, W.

AU - Gernhäuser, R.

AU - Gómez-Hornillos, M. B.

AU - Guerrero, C.

AU - Heil, M.

AU - Hinke, C.

AU - Knöbel, R.

AU - Kojouharov, I.

AU - Kurcewicz, J.

AU - Kurz, N.

AU - Litvinov, Y.

AU - Maier, L.

AU - Marganiec, J.

AU - Marta, M.

AU - Martínez, T.

AU - Martínez-Pinedo, G.

AU - Meyer, B. S.

AU - Montes, F.

AU - Mukha, I.

AU - Napoli, D. R.

AU - Nociforo, Ch

AU - Paradela, C.

AU - Pietri, S.

AU - Podolyák, Z.

AU - Prochazka, A.

AU - Rice, S.

AU - Riego, A.

AU - Rubio, B.

AU - Schaffner, H.

AU - Scheidenberger, Ch

AU - Smith, K.

AU - Sokol, E.

AU - Steiger, K.

AU - Sun, B.

AU - Taín, J. L.

AU - Takechi, M.

AU - Testov, D.

AU - Weick, H.

AU - Wilson, E.

AU - Winfield, J. S.

AU - Wood, R.

AU - Woods, P.

AU - Yeremin, A.

PY - 2016/1/5

Y1 - 2016/1/5

N2 - 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.

AB - 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.

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DO - 10.1088/1742-6596/665/1/012045

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SN - 1742-6588

VL - 665

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

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ER -

Approaching the precursor nuclei of the third r-process peak with RIBs

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Approaching the precursor nuclei of the third r-process peak with RIBs

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