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gamma-ray spectroscopy of At-197
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- Andgren, Karin (author)
- KTH,Fysik
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- Cederwall, Bo (author)
- KTH,Fysik
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- Bäck, Torbjörn (author)
- KTH,Fysik
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- (creator_code:org_t)
- 2008
- 2008
- English.
- In: Physical Review C. Nuclear Physics. - 0556-2813 .- 1089-490X. ; 78:4, s. 044328-1-044328-8
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- Excited states of the extremely neutron-deficient nucleus At-197 have been studied in an in-beam experiment using the fusion-evaporation reaction Sn-118(Kr-82,p2n)At-197. gamma rays belonging to At-197 feeding the I-pi=(9/2(-)) ground state, as well as gamma rays feeding the 311-keV I-pi=(13/2(+)) isomer, decaying via the emission of gamma rays, and the 52-keV I-pi=(1/2(+)) alpha-decaying isomer have been identified using the recoil-alpha-decay tagging technique. Total Routhian surface calculations predict a near-spherical shape for the (9/2(-)) ground state and oblate shapes with beta(2) around -0.2 for the (1/2(+)) and the (13/2(+)) states. These predictions agree with our experimental findings.
Subject headings
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
Keyword
- HIGH-SPIN STATES
- ALPHA-DECAY
- BI-187
- BI-189 ISOTOPES
- EXCITED-STATES
- MEAN-FIELD
- NUCLEI
- IDENTIFICATION
- DEFORMATION
- BEHAVIOR
- Nuclear physics
- Kärnfysik
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- ref (subject category)
- art (subject category)
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- Andgren, Karin
- Cederwall, Bo
- Bäck, Torbjörn
- Hadinia, Baharak
- Johnson, Arne
- Khaplanov, Anton
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- Sandzelius, Mika ...
- Wyss, Ramon
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- NATURAL SCIENCES
- NATURAL SCIENCES
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- Royal Institute of Technology
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