| Title: |
Observation and spectroscopy of the proton-unbound nucleus 21Al |
| Authors: |
Kostyleva, D.; Xu, X.-D.; Mukha, I.; Acosta, L.; Bajzek, M.; Casarejos Ruiz, Enrique; Ciemny, A. A.; Cortina Gil, D.; Dominik, W.; Dueñas, J. A.; Espino, J. M.; Estradé, A.; Farinon, F.; Fomichev, A.; Geissel, H.; Gómez-Camacho, J.; Gorshkov, A.; Grigorenko, L. V.; Janas, Z.; Kamiński, G.; Kiselev, O.; Knöbel, R.; Korsheninnikov, A. A.; Krupko, S.; Kuich, M.; Kurz, N.; Litvinov, Yu. A.; Marquinez-Durán, G.; Martel, I.; Mazzocchi, C.; Nikolskii, E. Yu.; Nociforo, C.; Ordúz, A. K.; Pfützner, M.; Pietri, S.; Pomorski, M.; Prochazka, A.; Rodríguez-Tajes, C.; Rymzhanova, S.; Sánchez Benítez, A. M.; Scheidenberger, C.; Simon, H.; Sitar, B.; Slepnev, R.; Stanoiu, M.; Strmen, P.; Sümmerer, K.; Szarka, I.; Takechi, M.; Tanaka, Y. K.; Weick, H.; Winfield, J. S.; Woods, P. J.; Zhukov, M. V. |
| Publisher Information: |
Physical Review C; Enxeñaría mecánica, máquinas e motores térmicos e fluídos; Deseño e Simulación Numérica en Enxeñaría Mecánica |
| Publication Year: |
2024 |
| Collection: |
University of Vigo: Investigo (Repositorio Institucional de la Universidade de Vigo) |
| Subject Terms: |
2207.19 Estructura Nuclear; 22 Física; 2207 Física Atómica y Nuclear |
| Description: |
We report on the observation of the previously unknown isotope 21Al, the first unbound aluminum isotope located beyond the proton dripline. The 21Al nucleus decays by one-proton (1p) emission, and its in-flight decays were detected by tracking trajectories of the decay products with silicon microstrip detectors. The 1p-emission processes were studied by analyzing the measured angular correlations of decay products 20Mg+p. The 1p- decay energies of the ground and low-lying excited states of 21Al, its mass excess, and the proton separation energy value S = −1.15+0.10 MeV were determined. ; Helmholtz International Center for FAIR | Ref. IK-RU-002 ; Chinese Academy of Sciences | Ref. 2024PVA0005 ; Russian Science Foundation | Ref. 22-12-00054 ; Hessisches Ministerium für Wissenschaft und Kunst ; Polish National Science Center | Ref. 2019/33/B/ST2/02908 ; Helmholtz-CAS Joint Research Group | Ref. HCJRG-108 ; Agencia Estatal de Investigación | Ref. FPA2016-77689-C2-1-R ; Ministerio de Economía y Competitividad | Ref.FPA2015-69640-C2-2-P |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| ISSN: |
24699985; 24699993 |
| Relation: |
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/FPA2016-77689-C2-1-R/ES/FISICA NUCLEAR Y APLICACIONES MEDICAS EN EL CNA E INSTALACIONES INTERNACIONALES; info:eu-repo/grantAgreement/MINECO//FPA2015-69640-C2-2-P/ES/EXPERIMENTO R3B DEL DIA CERO EN EL GSI Y CONTRIBUCION A LA CONSTRUCCION DEL DEMOSTRADOR DE CALIFA; info:eu-repo/grantAgreement/EC/HE/101057511; https://hdl.handle.net/11093/11219; https://doi.org/10.1103/PhysRevC.110.L031301 |
| DOI: |
10.1103/PhysRevC.110.L031301 |
| Availability: |
https://hdl.handle.net/11093/11219; https://doi.org/10.1103/PhysRevC.110.L031301 |
| Rights: |
©2024 American Physical Society ; openAccess |
| Accession Number: |
edsbas.5B71DACF |
| Database: |
BASE |