RT Journal Article
T1 First <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>β</mml:mi></mml:mrow></mml:math>-Delayed Two-Neutron Spectroscopy of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>r</mml:mi></mml:mrow></mml:math>-Process Nucleus <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>In</mml:mi></mml:mrow><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>134</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math> and Observation of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>i</mml:mi></mml:mrow><mml:mrow><mml:mn>13</mml:mn><mml:mo>/</mml:mo><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math> Single-Particle Neutron State in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>Sn</mml:mi></mml:mrow><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>133</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math>
A1 Dyszel, P.
A1 Grzywacz, R.
A1 Xu, Z. Y.
A1 Kitamura, N.
A1 Karny, M.
A1 Korgul, A.
A1 Madurga, M.
A1 Neupane, S.
A1 Algora, A.
A1 Andreyev, A. N.
A1 Araszkiewicz, M.
A1 Bark, R. A.
A1 Benito García, Jaime
A1 Bernier, Nikita
A1 Borge, M. J. G.
A1 Caballero Rodríguez, Miriam
A1 Chuchala, P.
A1 Cocolios, T. E.
A1 Costache, C.
A1 Cubiss, J. G.
A1 DeWitte, H.
A1 Escher, J. E.
A1 Fernandez-Ruiz, D.
A1 Fijalkowska, A.
A1 Fraile Prieto, Luis Mario
A1 Fynbo, H. O. U.
A1 Gouge, J.
A1 López Herraiz, Joaquín
A1 Illana Sisón, Andrés
A1 Jones, P. M.
A1 Judson, D. S.
A1 Kamińska, P.
A1 Kawano, T.
A1 Kolos, K.
A1 Labiche, M.
A1 Lică, R.
A1 Llanos Expósito, Mario
A1 Grarcía de Lorenzo, Gabriel
A1 Marginean, N.
A1 Michelon, I.
A1 Mihai, C.
A1 Nácher, E.
A1 Neacsu, C.
A1 Nielsen, J. S.
A1 Olaizola, B.
A1 Orce, J. N.
A1 Page, C. A. A.
A1 Page, R. D.
A1 Pakarinen, J.
A1 Perea, A.
A1 Piersa-Silkowska, Monika
A1 Podolyák, Zs.
A1 Prieto, J. S.
A1 Rajabali, M.
A1 Shaw, J.
A1 Sison, A. I.
A1 Solak, K.
A1 Stryjczyk, M.
A1 Tengblad, O.
A1 Vicente, P. G. T.
A1 Warr, N.
A1 Wilson, J.
A1 Yue, Z.
A1 Zajda, S.
AB This manuscript reports on the direct observation of a β-delayed two-neutron emission in a study of 134In at the ISOLDE Decay Station using neutron spectroscopy. We also report on the first measurement in β-decay of the long-sought 13/2+ excited state in 133Sn, attributed to be the neutron single-particle i13/2 orbital. The observation of sequential neutron emission is used to extract the relative population of the i13/2 state, which was found to be much smaller than the predictions of the statistical model. The experiment was possible because of the innovative use of a neutron array with neutron discrimination and interaction tracking capabilities. This is the first study of the details of the two-neutron emission for a nucleus, which belongs to the r-process path. Understanding β-delayed two-neutron emission probabilities is essential to validate models used in astrophysical r-process nucleosynthesis calculations. Observing two-neutron emissions in β-decay paves the way for new experiments to study energy and angular correlations for β-delayed multineutron emitters.
PB American Physical Society
SN 0031-9007
YR 2025
FD 2025-10-08
LK https://hdl.handle.net/20.500.14352/131526
UL https://hdl.handle.net/20.500.14352/131526
LA eng
NO Dyszel, P., et al. «First β -Delayed Two-Neutron Spectroscopy of the r -Process Nucleus In 134 and Observation of the i 13 / 2 Single-Particle Neutron State in Sn 133». Physical Review Letters, vol. 135, n.o 15, octubre de 2025, p. 152501. DOI.org (Crossref), https://doi.org/10.1103/l24v-5m31.
NO Group Author: IDS Collaboration.DEFG02-96ER40983.DE-AC05-00OR22725.89233218CNA000001.DE-AC52-07NA27344.DE-436NA0003899.DE-NA0002132.DE-NA0004068.1919735.PN 23 21 01 02.05P18PKCIA.05P21PKCI1.05P2018.05P2021.ST/R004056/1.ST/P004598/1.ST/P003885/1.ST/V001027/1.ST/Y000242/1.ST/V001035/1.2021B0301030006.2020/39/B/ST2/02346.2024/53/N/ST2/03168.2023/51/D/ST2/02816.2021/WK/07.CT31/21.CISEJI/2022/25.South African CERN Program
NO European Comission
NO Department of Energy (US)
NO National Science Foundation (US)
NO Research Foundation - Flanders
NO KU Leuven
NO Federal Ministry of Education and Research (Germany)
NO Science and Technology Facilities Research Council (UK)
NO Guangdong Major Project of Basic and Applied Basic Research (China)
NO Polish National Science Center
NO Ministry of Science and Higher Education (Poland)
NO Ministerio de Ciencia e Innovación (España)
NO Agencia Estatal de Investigación
NO Generalitat Valenciana
NO Universidad Complutense de Madrid
NO European Organization for Nuclear Research
DS Docta Complutense
RD 20 mar 2026