| Title: |
Studying Gamow-Teller transitions and the assignment of isomeric and ground states at N = 50 |
| Authors: |
Mollaebrahimi, Ali; Hornung, Christine; Dickel, Timo; Amanbayev, Daler; Kripko-Koncz, Gabriella; Plaß, Wolfgang R.; San Andrés, Samuel Ayet; Beck, Sönke; Blazhev, Andrey; Bergmann, Julian; Geissel, Hans; Górska, Magdalena; Grawe, Hubert; Greiner, Florian; Haettner, Emma; Kalantar-Nayestanaki, Nasser; Miskun, Ivan; Nowacki, Frédéric; Scheidenberger, Christoph; Bagchi, Soumya; Balabanski, Dimiter L.; Brencic, Ziga; Charviakova, Olga; Constantin, Paul; Dehghan, Masoumeh; Ebert, Jens; Gröf, Lizzy; Hall, Oscar; Harakeh, Muhsin N.; Kaur, Satbir; Kankainen, Anu; Knöbel, Ronja; Kostyleva, Daria, A.; Kurkova, Natalia; Kuzminchuk, Natalia; Mardor, Israel; Nichita, Dragos; Otto, Jan-Hendrik; Patyk, Zygmunt; Pietri, Stephane; Purushothaman, Sivaji; Reiter, Moritz Pascal; Rink, Ann-Kathrin; Roesch, Heidi; Spătaru, Anamaria; Stanic, Goran; State, Alexandru; Tanaka, Yoshiki K.; Vencelj, Matjaz; Weick, Helmut; Winfield, John S.; Yavor, Michael I.; Zhao, Jianwei |
| Publisher Information: |
Elsevier BV |
| Publication Year: |
2023 |
| Collection: |
JYX - Jyväskylä University Digital Archive / Jyväskylän yliopiston julkaisuarkisto |
| Subject Terms: |
multiple-reflection time-of-flight mass; spectrometer; N = 50 isotones; Gamow-Teller transition's strength; nuclear shell structure; nuclear isomers; exotic nuclei; Accelerator Laboratory; Kiihdytinlaboratorio; ydinfysiikka |
| Description: |
Direct mass measurements of neutron-deficient nuclides around the N = 50 shell closure below 100Sn were performed at the FRS Ion Catcher (FRS-IC) at GSI, Germany. The nuclei were produced by projectile fragmentation of 124Xe, separated in the fragment separator FRS and delivered to the FRS-IC. The masses of 14 ground states and two isomers were measured with relative mass uncertainties down to 1 × 10−7 using the multiple-reflection time-of-flight mass spectrometer of the FRS-IC, including the first direct mass measurements of 98Cd and 97Rh. A new Q EC = 5437 ± 67 keV was obtained for 98Cd, resulting in a summed Gamow-Teller (GT) strength for the five observed transitions (0+ −→ 1+) as B(GT) = 2.94+0.32−0.28. Investigation of this result in state-of-the-art shell model approaches accounting for the first time experimentally observed spectrum of GT transitions points to a perfect agreement for N = 50 isotones. The excitation energy of the long-lived isomeric state in 94Rh was determined for the first time to be 293 ± 21 keV. This, together with the shell model calculations, allows the level ordering in 94Rh to be understood. ; peerReviewed |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf; fulltext |
| Language: |
English |
| ISSN: |
0370-2693 |
| Relation: |
Physics Letters B; 839 |
| Availability: |
http://urn.fi/URN:NBN:fi:jyu-202303202188 |
| Rights: |
CC BY 4.0 ; © 2023 The Author(s). Published by Elsevier B.V. ; openAccess ; https://creativecommons.org/licenses/by/4.0/ |
| Accession Number: |
edsbas.87F99860 |
| Database: |
BASE |