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Lifetime measuremen...
Lifetime measurements in Re-166 : Collective versus magnetic rotation
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- Li, Hongjie (författare)
- KTH,Kärnfysik,Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China
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- Cederwall, Bo (författare)
- KTH,Kärnfysik
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- Doncel, Maria (författare)
- KTH,Kärnfysik
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- Bäck, Torbjörn (författare)
- KTH,Kärnfysik
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- Jakobsson, Ulrika (författare)
- KTH,Kärnfysik,Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland
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Xiao, Z. G. (författare)
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(creator_code:org_t)
- American Physical Society, 2016
- 2016
- Engelska.
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Ingår i: PHYSICAL REVIEW C. - : American Physical Society. - 2469-9985. ; 93:3
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Lifetimes of excited states in the neutron-deficient odd-odd nucleus Re-166 have been measured for the first time using the recoil distance Doppler-shift method. The measured lifetime for the (8(-)) state; tau = 480 (80) ps, enabled an assessment of the multipolarities of the gamma rays depopulating this state. Information on electromagnetic transition strengths were deduced for the gamma-ray transitions from the (9(-)), (10(-)), and (11(-)) states, and in the case of the (10(-)) and (11(-)) states limits on the B (M1) and B(E2) strengths were estimated. The results are compared with total Routhian surface predictions and semiclassical calculations. Tilted-axis cranking calculations based on a relativistic mean-field approach (TAC-RMF) have also been performed in order to test the possibility of magnetic rotation in the 166Re nucleus. While the TAC-RMF calculations predict a quadrupole-deformed nuclear shape with similar beta(2) deformation as obtained by using the TRS model, it was found that the experimental electromagnetic transition rates are in better agreement with a collective -rotational description.
Ämnesord
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
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