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Nuclear structure of Th-229
- Ruchowska, E. (author)
- Plociennik, W. A. (author)
- Zylicz, A. (author)
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- Kvasil, J. (author)
- Algora, A. (author)
- Amzal, N. (author)
- Borge, M. G. (author)
- Boutami, R. (author)
- Butler, P. A. (author)
- Fraile, L. M. (author)
- Fynbo, H. O. U. (author)
- Hagebo, E. (author)
- Hoff, P. (author)
- Gausemel, H. (author)
- Jungclaus, A. (author)
- Kaczarowski, R. (author)
- Kurcewicz, W. (author)
- Nacher, E. (author)
- Rubio, B. (author)
- Syntfeld, A. (author)
- Tengblad, O. (author)
- Wasilewski, A. A. (author)
- Weissman, L. (author)
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- (creator_code:org_t)
- American Physical Society, 2006
- 2006
- English.
- In: Physical Review C. Nuclear Physics. - : American Physical Society. - 0556-2813 .- 1089-490X. ; 73:4
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Lifetimes of excited states in Th-229, populated in the beta decay of Ac-229, have been measured using the advanced time-delayed beta gamma gamma(t) method. Half-lives of 14 states have been determined including 11 of them for the first time. Twenty-seven new gamma lines have been introduced into the beta-decay scheme of Ac-229 based on results of gamma gamma coincidence measurements. Reduced transition probabilities have been determined for more than 70 gamma transitions in Th-229. Average parallel to D-0 parallel to values of 0.029(1), 0.077(3), and 0.024(5) e fm have been deduced for the lowest K-pi=1/2(+/-),3/2(+/-), and 5/2(+/-) parity partner bands, respectively. Excited states in Th-229 and experimental transition rates have been interpreted within the quasiparticle-plus-phonon model. The half-life of the 3.5-eV, 3/2(+) isomeric state is predicted to be about 10 h. Potential energy surfaces on the (beta(2),beta(3)) plane for the lowest single quasiparticle configurations in Th-229 have been calculated using the Strutinsky method.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
Keyword
- a yb nuclei
- picosecond lifetime measurements
- intrinsic reflection asymmetry
- parity-doublet bands
- neutron-rich nuclei
- 3.5 ev isomer
- electromagnetic properties
- rotational bands
- transition rates
- excited-state
- Nuclear physics
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- ref (subject category)
- art (subject category)
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- Ruchowska, E.
- Plociennik, W. A ...
- Zylicz, A.
- Mach, Henryk
- Kvasil, J.
- Algora, A.
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- Amzal, N.
- Bäck, Torbjörn
- Borge, M. G.
- Boutami, R.
- Butler, P. A.
- Cederkäll, Joaki ...
- Cederwall, Bo
- Fogelberg, Birge ...
- Fraile, L. M.
- Fynbo, H. O. U.
- Hagebo, E.
- Hoff, P.
- Gausemel, H.
- Jungclaus, A.
- Kaczarowski, R.
- Kerek, Andras
- Kurcewicz, W.
- Lagergren, K.
- Nacher, E.
- Rubio, B.
- Syntfeld, A.
- Tengblad, O.
- Wasilewski, A. A ...
- Weissman, L.
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