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Half-Life Systematics across the N=126 Shell Closure: Role of First-Forbidden Transitions in the β Decay of Heavy Neutron-Rich Nuclei.
- Morales, A I (author)
- Benlliure, J (author)
- Kurtukián-Nieto, T (author)
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- Schmidt, K-H (author)
- Verma, S (author)
- Regan, P H (author)
- Podolyák, Z (author)
- Górska, M (author)
- Pietri, S (author)
- Kumar, R (author)
- Casarejos, E (author)
- Al-Dahan, N (author)
- Algora, A (author)
- Alkhomashi, N (author)
- Alvarez-Pol, H (author)
- Benzoni, G (author)
- Blazhev, A (author)
- Boutachkov, P (author)
- Bruce, A M (author)
- Cáceres, L S (author)
- Cullen, I J (author)
- Denis Bacelar, A M (author)
- Doornenbal, P (author)
- Estévez-Aguado, M E (author)
- Farrelly, G (author)
- Fujita, Y (author)
- Garnsworthy, A B (author)
- Gelletly, W (author)
- Gerl, J (author)
- Grebosz, J (author)
- Kojouharov, I (author)
- Kurz, N (author)
- Lalkovski, S (author)
- Liu, Z (author)
- Mihai, C (author)
- Molina, F (author)
- Mücher, D (author)
- Rubio, B (author)
- Shaffner, H (author)
- Steer, S J (author)
- Tamii, A (author)
- Tashenov, S (author)
- Valiente-Dobón, J J (author)
- Walker, P M (author)
- Wollersheim, H J (author)
- Woods, P J (author)
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- (creator_code:org_t)
- 2014
- 2014
- English.
- In: Physical Review Letters. - 1079-7114. ; 113:2
- Journal article (peer-reviewed)
Abstract
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- This Letter reports on a systematic study of β-decay half-lives of neutron-rich nuclei around doubly magic ^{208}Pb. The lifetimes of the 126-neutron shell isotone ^{204}Pt and the neighboring ^{200-202}Ir, ^{203}Pt, ^{204}Au are presented together with other 19 half-lives measured during the "stopped beam" campaign of the rare isotope investigations at GSI collaboration. The results constrain the main nuclear theories used in calculations of r-process nucleosynthesis. Predictions based on a statistical macroscopic description of the first-forbidden β strength reveal significant deviations for most of the nuclei with N<126. In contrast, theories including a fully microscopic treatment of allowed and first-forbidden transitions reproduce more satisfactorily the trend in the measured half-lives for the nuclei in this region, where the r-process pathway passes through during β decay back to stability.
Subject headings
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
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- art (subject category)
- ref (subject category)
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- Morales, A I
- Benlliure, J
- Kurtukián-Nieto, ...
- Schmidt, K-H
- Verma, S
- Regan, P H
- show more...
- Podolyák, Z
- Górska, M
- Pietri, S
- Kumar, R
- Casarejos, E
- Al-Dahan, N
- Algora, A
- Alkhomashi, N
- Alvarez-Pol, H
- Benzoni, G
- Blazhev, A
- Boutachkov, P
- Bruce, A M
- Cáceres, L S
- Cullen, I J
- Denis Bacelar, A ...
- Doornenbal, P
- Estévez-Aguado, ...
- Farrelly, G
- Fujita, Y
- Garnsworthy, A B
- Gelletly, W
- Gerl, J
- Grebosz, J
- Hoischen, Robert
- Kojouharov, I
- Kurz, N
- Lalkovski, S
- Liu, Z
- Mihai, C
- Molina, F
- Mücher, D
- Rubio, B
- Shaffner, H
- Steer, S J
- Tamii, A
- Tashenov, S
- Valiente-Dobón, ...
- Walker, P M
- Wollersheim, H J
- Woods, P J
- show less...
- About the subject
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- NATURAL SCIENCES
- NATURAL SCIENCES
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- By the university
- Lund University
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