Bound-state beta decay of 205Tl81+ ions and the LOREX project

E121 Collaboration; LOREX Collaboration; R.S. Sidhu; G. Leckenby; R. J. Chen; R. Mancino; T. Neff; Yu. A. Litvinov; G. Martínez-Pinedo; G. Amthauer; M. Bai; K. Blaum; B. Boev; F. Bosch; C. Brandau; V. Cvetkovic; T. Dickel; I. Dillmann; D. Dmytriiev; T. Faestermann; O. Forstner; B. Franczak; H. Geissel; R. Gernhauser; J. Glorius; C. J. Griffin; A. Gumberidze; E. Haettner; P.-M. Hillenbrand; P. Kienle; W. Korten; Ch. Kozhuharov; N. Kuzminchuk; K. Langanke; S. Litvinov; E. Menz; T. Morgenroth; C. Nociforo; F. Nolden; M.K. Pavicevic; N. Petridis; U. Popp; S. Purushothaman; R. Reifarth; M.S. Sanjari; C. Sheidenberger; U. Spillmann; M.  Steck; Th. Stöhlker; Y. K. Tanaka; M. Trassinelli; S. Trotsenko; L. Varga; M. Wang; H. Weick; P. J.  Woods; T. Yamaguchi; Y. Zhang; J. Zhao; K. Zuber

doi:10.1103/PhysRevLett.133.232701

Bound-state beta decay of 205Tl81+ ions and the LOREX project

E121 Collaboration
, LOREX Collaboration
, R.S. Sidhu^*
, G. Leckenby
, R. J. Chen
, R. Mancino
, T. Neff
, Yu. A. Litvinov
, G. Martínez-Pinedo
, G. Amthauer
, M. Bai
, K. Blaum
, B. Boev
, F. Bosch
, C. Brandau
, V. Cvetkovic
, T. Dickel
, I. Dillmann
, D. Dmytriiev
, T. Faestermann

O. Forstner, B. Franczak, H. Geissel, R. Gernhauser, J. Glorius, C. J. Griffin, A. Gumberidze, E. Haettner, P.-M. Hillenbrand, P. Kienle, W. Korten, Ch. Kozhuharov, N. Kuzminchuk, K. Langanke, S. Litvinov, E. Menz, T. Morgenroth, C. Nociforo, F. Nolden, M.K. Pavicevic, N. Petridis, U. Popp, S. Purushothaman, R. Reifarth, M.S. Sanjari, C. Sheidenberger, U. Spillmann, M. Steck, Th. Stöhlker, Y. K. Tanaka, M. Trassinelli, S. Trotsenko, L. Varga, M. Wang, H. Weick, P. J. Woods, T. Yamaguchi, Y. Zhang, J. Zhao, K. Zuber

^*Corresponding author for this work

School of Physics and Astronomy

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

Abstract

Stable 205Tl ions have the lowest known energy threshold for capturing electron neutrinos (νe) of Eνe ≥ 50.6 keV. The LORandite EXperiment (LOREX), proposed in the 1980s, aims at obtaining the long-time averaged solar pp-neutrino flux by utilizing natural deposits of Tl-bearing lorandite ores. To determine the νe capture cross section, it is required to know the strength of the weak transition connecting the ground state of 205Tl and the 2.3 keV first excited state in 205Pb. The only way to experimentally address this transition is to measure the bound-state beta decay (βb) of fully-ionized 205Tl81+ ions. After three decades of meticulous preparation, the half-life of the βb decay of 205Tl81+ has been measured to be 291+33−27 days using the Experimental Storage Ring (ESR) at GSI, Darmstadt. The longer measured half-life compared to theoretical predictions reduces the expected signal-to-noise ratio in the LOREX, thus challenging its feasibility.

Original language	English
Article number	232701
Pages (from-to)	1-8
Number of pages	8
Journal	Physical Review Letters
Volume	133
Issue number	23
Early online date	2 Dec 2024
DOIs	https://doi.org/10.1103/PhysRevLett.133.232701
Publication status	Published - 6 Dec 2024

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10.1103/PhysRevLett.133.232701Licence: Creative Commons: Attribution (CC-BY)

Edinburgh Nuclear Physics Group Consolidated Grant Proposal
Woods, P. (Principal Investigator), Aliotta, M. (Co-investigator), Lederer-Woods, C. (Co-investigator), Murphy, A. (Co-investigator) & Watts, D. (Co-investigator)
STFC
1/10/17 → 30/09/21
Project: Research

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E121 Collaboration, LOREX Collaboration, Sidhu, R. S., Leckenby, G., Chen, R. J., Mancino, R., Neff, T., Litvinov, Y. A., Martínez-Pinedo, G., Amthauer, G., Bai, M., Blaum, K., Boev, B., Bosch, F., Brandau, C., Cvetkovic, V., Dickel, T., Dillmann, I., Dmytriiev, D., ... Zuber, K. (2024). Bound-state beta decay of 205Tl81+ ions and the LOREX project. Physical Review Letters, 133(23), 1-8. Article 232701. https://doi.org/10.1103/PhysRevLett.133.232701

@article{10b804338261462dbc61074b71c9c29d,

title = "Bound-state beta decay of 205Tl81+ ions and the LOREX project",

abstract = "Stable 205Tl ions have the lowest known energy threshold for capturing electron neutrinos (νe) of Eνe ≥ 50.6 keV. The LORandite EXperiment (LOREX), proposed in the 1980s, aims at obtaining the long-time averaged solar pp-neutrino flux by utilizing natural deposits of Tl-bearing lorandite ores. To determine the νe capture cross section, it is required to know the strength of the weak transition connecting the ground state of 205Tl and the 2.3 keV first excited state in 205Pb. The only way to experimentally address this transition is to measure the bound-state beta decay (βb) of fully-ionized 205Tl81+ ions. After three decades of meticulous preparation, the half-life of the βb decay of 205Tl81+ has been measured to be 291+33−27 days using the Experimental Storage Ring (ESR) at GSI, Darmstadt. The longer measured half-life compared to theoretical predictions reduces the expected signal-to-noise ratio in the LOREX, thus challenging its feasibility. ",

author = "\{E121 Collaboration\} and \{LOREX Collaboration\} and R.S. Sidhu and G. Leckenby and Chen, \{R. J.\} and R. Mancino and T. Neff and Litvinov, \{Yu. A.\} and G. Mart{\'i}nez-Pinedo and G. Amthauer and M. Bai and K. Blaum and B. Boev and F. Bosch and C. Brandau and V. Cvetkovic and T. Dickel and I. Dillmann and D. Dmytriiev and T. Faestermann and O. Forstner and B. Franczak and H. Geissel and R. Gernhauser and J. Glorius and Griffin, \{C. J.\} and A. Gumberidze and E. Haettner and P.-M. Hillenbrand and P. Kienle and W. Korten and Ch. Kozhuharov and N. Kuzminchuk and K. Langanke and S. Litvinov and E. Menz and T. Morgenroth and C. Nociforo and F. Nolden and M.K. Pavicevic and N. Petridis and U. Popp and S. Purushothaman and R. Reifarth and M.S. Sanjari and C. Sheidenberger and U. Spillmann and M. Steck and Th. St{\"o}hlker and Tanaka, \{Y. K.\} and M. Trassinelli and S. Trotsenko and L. Varga and M. Wang and H. Weick and Woods, \{P. J.\} and T. Yamaguchi and Y. Zhang and J. Zhao and K. Zuber",

year = "2024",

month = dec,

day = "6",

doi = "10.1103/PhysRevLett.133.232701",

language = "English",

volume = "133",

pages = "1--8",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "23",

}

E121 Collaboration, LOREX Collaboration, Sidhu, RS, Leckenby, G, Chen, RJ, Mancino, R, Neff, T, Litvinov, YA, Martínez-Pinedo, G, Amthauer, G, Bai, M, Blaum, K, Boev, B, Bosch, F, Brandau, C, Cvetkovic, V, Dickel, T, Dillmann, I, Dmytriiev, D, Faestermann, T, Forstner, O, Franczak, B, Geissel, H, Gernhauser, R, Glorius, J, Griffin, CJ, Gumberidze, A, Haettner, E, Hillenbrand, P-M, Kienle, P, Korten, W, Kozhuharov, C, Kuzminchuk, N, Langanke, K, Litvinov, S, Menz, E, Morgenroth, T, Nociforo, C, Nolden, F, Pavicevic, MK, Petridis, N, Popp, U, Purushothaman, S, Reifarth, R, Sanjari, MS, Sheidenberger, C, Spillmann, U, Steck, M, Stöhlker, T, Tanaka, YK, Trassinelli, M, Trotsenko, S, Varga, L, Wang, M, Weick, H, Woods, PJ, Yamaguchi, T, Zhang, Y, Zhao, J & Zuber, K 2024, 'Bound-state beta decay of 205Tl81+ ions and the LOREX project', Physical Review Letters, vol. 133, no. 23, 232701, pp. 1-8. https://doi.org/10.1103/PhysRevLett.133.232701

TY - JOUR

T1 - Bound-state beta decay of 205Tl81+ ions and the LOREX project

AU - E121 Collaboration

AU - LOREX Collaboration

AU - Sidhu, R.S.

AU - Leckenby, G.

AU - Chen, R. J.

AU - Mancino, R.

AU - Neff, T.

AU - Litvinov, Yu. A.

AU - Martínez-Pinedo, G.

AU - Amthauer, G.

AU - Bai, M.

AU - Blaum, K.

AU - Boev, B.

AU - Bosch, F.

AU - Brandau, C.

AU - Cvetkovic, V.

AU - Dickel, T.

AU - Dillmann, I.

AU - Dmytriiev, D.

AU - Faestermann, T.

AU - Forstner, O.

AU - Franczak, B.

AU - Geissel, H.

AU - Gernhauser, R.

AU - Glorius, J.

AU - Griffin, C. J.

AU - Gumberidze, A.

AU - Haettner, E.

AU - Hillenbrand, P.-M.

AU - Kienle, P.

AU - Korten, W.

AU - Kozhuharov, Ch.

AU - Kuzminchuk, N.

AU - Langanke, K.

AU - Litvinov, S.

AU - Menz, E.

AU - Morgenroth, T.

AU - Nociforo, C.

AU - Nolden, F.

AU - Pavicevic, M.K.

AU - Petridis, N.

AU - Popp, U.

AU - Purushothaman, S.

AU - Reifarth, R.

AU - Sanjari, M.S.

AU - Sheidenberger, C.

AU - Spillmann, U.

AU - Steck, M.

AU - Stöhlker, Th.

AU - Tanaka, Y. K.

AU - Trassinelli, M.

AU - Trotsenko, S.

AU - Varga, L.

AU - Wang, M.

AU - Weick, H.

AU - Woods, P. J.

AU - Yamaguchi, T.

AU - Zhang, Y.

AU - Zhao, J.

AU - Zuber, K.

PY - 2024/12/6

Y1 - 2024/12/6

N2 - Stable 205Tl ions have the lowest known energy threshold for capturing electron neutrinos (νe) of Eνe ≥ 50.6 keV. The LORandite EXperiment (LOREX), proposed in the 1980s, aims at obtaining the long-time averaged solar pp-neutrino flux by utilizing natural deposits of Tl-bearing lorandite ores. To determine the νe capture cross section, it is required to know the strength of the weak transition connecting the ground state of 205Tl and the 2.3 keV first excited state in 205Pb. The only way to experimentally address this transition is to measure the bound-state beta decay (βb) of fully-ionized 205Tl81+ ions. After three decades of meticulous preparation, the half-life of the βb decay of 205Tl81+ has been measured to be 291+33−27 days using the Experimental Storage Ring (ESR) at GSI, Darmstadt. The longer measured half-life compared to theoretical predictions reduces the expected signal-to-noise ratio in the LOREX, thus challenging its feasibility.

AB - Stable 205Tl ions have the lowest known energy threshold for capturing electron neutrinos (νe) of Eνe ≥ 50.6 keV. The LORandite EXperiment (LOREX), proposed in the 1980s, aims at obtaining the long-time averaged solar pp-neutrino flux by utilizing natural deposits of Tl-bearing lorandite ores. To determine the νe capture cross section, it is required to know the strength of the weak transition connecting the ground state of 205Tl and the 2.3 keV first excited state in 205Pb. The only way to experimentally address this transition is to measure the bound-state beta decay (βb) of fully-ionized 205Tl81+ ions. After three decades of meticulous preparation, the half-life of the βb decay of 205Tl81+ has been measured to be 291+33−27 days using the Experimental Storage Ring (ESR) at GSI, Darmstadt. The longer measured half-life compared to theoretical predictions reduces the expected signal-to-noise ratio in the LOREX, thus challenging its feasibility.

U2 - 10.1103/PhysRevLett.133.232701

DO - 10.1103/PhysRevLett.133.232701

M3 - Article

SN - 0031-9007

VL - 133

SP - 1

EP - 8

JO - Physical Review Letters

JF - Physical Review Letters

IS - 23

M1 - 232701

ER -

Bound-state beta decay of 205Tl81+ ions and the LOREX project

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Edinburgh Nuclear Physics Group Consolidated Grant Proposal

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