Projects per year
Abstract
The low-lying energy spectrum of the extremely neutron-deficient self-conjugate (N=Z) nuclide Ru448844 has been measured using the combination of the Advanced Gamma Tracking Array (AGATA) spectrometer, the NEDA and Neutron Wall neutron detector arrays, and the DIAMANT charged particle detector array. Excited states in Ru88 were populated via the Fe54(Ar36,2nγ)Ru88∗ fusion-evaporation reaction at the Grand Accélérateur National d'Ions Lourds (GANIL) accelerator complex. The observed γ-ray cascade is assigned to Ru88 using clean prompt γ-γ-2-neutron coincidences in anticoincidence with the detection of charged particles, confirming and extending the previously assigned sequence of low-lying excited states. It is consistent with a moderately deformed rotating system exhibiting a band crossing at a rotational frequency that is significantly higher than standard theoretical predictions with isovector pairing, as well as observations in neighboring N>Z nuclides. The direct observation of such a "delayed" rotational alignment in a deformed N=Z nucleus is in agreement with theoretical predictions related to the presence of strong isoscalar neutron-proton pair correlations.
Original language | English |
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Article number | 062501 |
Number of pages | 6 |
Journal | Physical Review Letters |
Volume | 124 |
Issue number | 6 |
DOIs | |
Publication status | Published - 12 Feb 2020 |
Bibliographical note
Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for detailsProjects
- 2 Finished
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Nuclear Physics Consolidated Grant
Jenkins, D. (Principal investigator), Andreyev, A. (Co-investigator), Bentley, M. (Co-investigator), Diget, C. A. (Co-investigator), Dobaczewski, J. J. (Co-investigator), Fulton, B. R. (Co-investigator), Laird, A. M. (Co-investigator), Paschalis, S. (Co-investigator), Pastore, A. (Co-investigator), Petri, M. (Co-investigator) & Wadsworth, R. (Co-investigator)
SCIENCE AND TECHNOLOGY FACILITIES COUNCIL (STFC)
1/10/17 → 30/09/22
Project: Research project (funded) › Research
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Nuclear Physics Consolidated Grant
Wadsworth, R. (Principal investigator), Wadsworth, R. (Principal investigator), Andreyev, A. (Co-investigator), Andreyev, A. (Co-investigator), Barton, C. J. (Co-investigator), Diget, C. A. (Co-investigator), Diget, C. A. (Co-investigator), Fulton, B. R. (Co-investigator), Fulton, B. R. (Co-investigator), Jenkins, D. (Co-investigator), Jenkins, D. (Co-investigator), Laird, A. M. (Co-investigator) & Laird, A. M. (Co-investigator)
SCIENCE AND TECHNOLOGY FACILITIES COUNCIL (STFC)
1/08/14 → 30/09/18
Project: Research project (funded) › Research