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High-temperature $^{205}$Tl decay clarifies $^{205}$Pb dating in early Solar System

Fuente: arXiv

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Detalles Bibliográficos
Autores principales:	Leckenby, G., Sidhu, R. S., Chen, R. J., Mancino, R., Szányi, B., Bai, M., Battino, U., Blaum, K., Brandau, C., Cristallo, S., Dickel, T., Dillmann, I., Dmytriiev, D., Faestermann, T., Forstner, O., Franczak, B., Geissel, H., Gernhäuser, R., Glorius, J., Griffin, C., Gumberidze, A., Haettner, E., Hillenbrand, P. -M., Karakas, A., Kaur, T., Korten, W., Kozhuharov, C., Kuzminchuk, N., Langanke, K., Litvinov, S., Litvinov, Y. A., Lugaro, M., Martínez-Pinedo, G., Menz, E., Meyer, B., Morgenroth, T., Neff, T., Nociforo, C., Petridis, N., Pignatari, M., Popp, U., Purushothaman, S., Reifarth, R., Sanjari, S., Scheidenberger, C., Spillmann, U., Steck, M., Stöhlker, T., Tanaka, Y. K., Trassinelli, M., Trotsenko, S., Varga, L., Vescovi, D., Wang, M., Weick, H., López, A. Yagüe, Yamaguchi, T., Zhang, Y., Zhao, J.
Formato:	Preprint
Publicado:	2024
Materias:	Nuclear Experiment Earth and Planetary Astrophysics Solar and Stellar Astrophysics
Acceso en línea:	Acceder al recurso
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

_version_	1866915018388275200
author	Leckenby, G. Sidhu, R. S. Chen, R. J. Mancino, R. Szányi, B. Bai, M. Battino, U. Blaum, K. Brandau, C. Cristallo, S. Dickel, T. Dillmann, I. Dmytriiev, D. Faestermann, T. Forstner, O. Franczak, B. Geissel, H. Gernhäuser, R. Glorius, J. Griffin, C. Gumberidze, A. Haettner, E. Hillenbrand, P. -M. Karakas, A. Kaur, T. Korten, W. Kozhuharov, C. Kuzminchuk, N. Langanke, K. Litvinov, S. Litvinov, Y. A. Lugaro, M. Martínez-Pinedo, G. Menz, E. Meyer, B. Morgenroth, T. Neff, T. Nociforo, C. Petridis, N. Pignatari, M. Popp, U. Purushothaman, S. Reifarth, R. Sanjari, S. Scheidenberger, C. Spillmann, U. Steck, M. Stöhlker, T. Tanaka, Y. K. Trassinelli, M. Trotsenko, S. Varga, L. Vescovi, D. Wang, M. Weick, H. López, A. Yagüe Yamaguchi, T. Zhang, Y. Zhao, J.
author_facet	Leckenby, G. Sidhu, R. S. Chen, R. J. Mancino, R. Szányi, B. Bai, M. Battino, U. Blaum, K. Brandau, C. Cristallo, S. Dickel, T. Dillmann, I. Dmytriiev, D. Faestermann, T. Forstner, O. Franczak, B. Geissel, H. Gernhäuser, R. Glorius, J. Griffin, C. Gumberidze, A. Haettner, E. Hillenbrand, P. -M. Karakas, A. Kaur, T. Korten, W. Kozhuharov, C. Kuzminchuk, N. Langanke, K. Litvinov, S. Litvinov, Y. A. Lugaro, M. Martínez-Pinedo, G. Menz, E. Meyer, B. Morgenroth, T. Neff, T. Nociforo, C. Petridis, N. Pignatari, M. Popp, U. Purushothaman, S. Reifarth, R. Sanjari, S. Scheidenberger, C. Spillmann, U. Steck, M. Stöhlker, T. Tanaka, Y. K. Trassinelli, M. Trotsenko, S. Varga, L. Vescovi, D. Wang, M. Weick, H. López, A. Yagüe Yamaguchi, T. Zhang, Y. Zhao, J.
contents	Radioactive nuclei with lifetimes on the order of millions of years can reveal the formation history of the Sun and active nucleosynthesis occurring at the time and place of its birth. Among such nuclei whose decay signatures are found in the oldest meteorites, $^{205}$Pb is a powerful example, as it is produced exclusively by slow neutron captures (the s process), with most being synthesized in asymptotic giant branch (AGB) stars. However, making accurate abundance predictions for $^{205}$Pb has so far been impossible because the weak decay rates of $^{205}$Pb and $^{205}$Tl are very uncertain at stellar temperatures. To constrain these decay rates, we measured for the first time the bound-state $β^-$ decay of fully ionized $^{205}$Tl$^{81+}$, an exotic decay mode that only occurs in highly charged ions. The measured half-life is 4.7 times longer than the previous theoretical estimate and our 10% experimental uncertainty has eliminated the main nuclear-physics limitation. With new, experimentally backed decay rates, we used AGB stellar models to calculate $^{205}$Pb yields. Propagating those yields with basic galactic chemical evolution (GCE) and comparing with the $^{205}$Pb/$^{204}$Pb ratio from meteorites, we determined the isolation time of solar material inside its parent molecular cloud. We find positive isolation times that are consistent with the other s-process short-lived radioactive nuclei found in the early Solar System. Our results reaffirm the site of the Sun's birth as a long-lived, giant molecular cloud and support the use of the $^{205}$Pb--$^{205}$Tl decay system as a chronometer in the early Solar System.
format	Preprint
id	arxiv_https___arxiv_org_abs_2411_08856
institution	arXiv
publishDate	2024
record_format	arxiv
spellingShingle	High-temperature $^{205}$Tl decay clarifies $^{205}$Pb dating in early Solar System Leckenby, G. Sidhu, R. S. Chen, R. J. Mancino, R. Szányi, B. Bai, M. Battino, U. Blaum, K. Brandau, C. Cristallo, S. Dickel, T. Dillmann, I. Dmytriiev, D. Faestermann, T. Forstner, O. Franczak, B. Geissel, H. Gernhäuser, R. Glorius, J. Griffin, C. Gumberidze, A. Haettner, E. Hillenbrand, P. -M. Karakas, A. Kaur, T. Korten, W. Kozhuharov, C. Kuzminchuk, N. Langanke, K. Litvinov, S. Litvinov, Y. A. Lugaro, M. Martínez-Pinedo, G. Menz, E. Meyer, B. Morgenroth, T. Neff, T. Nociforo, C. Petridis, N. Pignatari, M. Popp, U. Purushothaman, S. Reifarth, R. Sanjari, S. Scheidenberger, C. Spillmann, U. Steck, M. Stöhlker, T. Tanaka, Y. K. Trassinelli, M. Trotsenko, S. Varga, L. Vescovi, D. Wang, M. Weick, H. López, A. Yagüe Yamaguchi, T. Zhang, Y. Zhao, J. Nuclear Experiment Earth and Planetary Astrophysics Solar and Stellar Astrophysics Radioactive nuclei with lifetimes on the order of millions of years can reveal the formation history of the Sun and active nucleosynthesis occurring at the time and place of its birth. Among such nuclei whose decay signatures are found in the oldest meteorites, $^{205}$Pb is a powerful example, as it is produced exclusively by slow neutron captures (the s process), with most being synthesized in asymptotic giant branch (AGB) stars. However, making accurate abundance predictions for $^{205}$Pb has so far been impossible because the weak decay rates of $^{205}$Pb and $^{205}$Tl are very uncertain at stellar temperatures. To constrain these decay rates, we measured for the first time the bound-state $β^-$ decay of fully ionized $^{205}$Tl$^{81+}$, an exotic decay mode that only occurs in highly charged ions. The measured half-life is 4.7 times longer than the previous theoretical estimate and our 10% experimental uncertainty has eliminated the main nuclear-physics limitation. With new, experimentally backed decay rates, we used AGB stellar models to calculate $^{205}$Pb yields. Propagating those yields with basic galactic chemical evolution (GCE) and comparing with the $^{205}$Pb/$^{204}$Pb ratio from meteorites, we determined the isolation time of solar material inside its parent molecular cloud. We find positive isolation times that are consistent with the other s-process short-lived radioactive nuclei found in the early Solar System. Our results reaffirm the site of the Sun's birth as a long-lived, giant molecular cloud and support the use of the $^{205}$Pb--$^{205}$Tl decay system as a chronometer in the early Solar System.
title	High-temperature $^{205}$Tl decay clarifies $^{205}$Pb dating in early Solar System
topic	Nuclear Experiment Earth and Planetary Astrophysics Solar and Stellar Astrophysics
url	https://arxiv.org/abs/2411.08856