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Probing the collective degrees of freedom at the proton drip line in the extremely neutron deficient 172Hg

Sandzelius, Mikael (author)
KTH,Kärnfysik
Cederwall, Bo (author)
KTH,Kärnfysik
Ganioǧlu, Ela (author)
KTH,Kärnfysik
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Hadinia, Baharak (author)
KTH,Kärnfysik
Andgren, Karin (author)
KTH,Kärnfysik
Bäck, Torbjörn (author)
KTH,Kärnfysik
Grahn, T. (author)
Greenlees, P. T. (author)
Jakobsson, U. (author)
Johnson, Arne S. (author)
KTH,Kärnfysik
Jones, P. M. (author)
Julin, R. (author)
Juutinen, S. (author)
Ketelhut, S. (author)
Khaplanov, Anton (author)
KTH,Kärnfysik
Leino, M. (author)
Nyman, M. (author)
Peura, P. (author)
Rahkila, P. (author)
Sánre, J. (author)
Scholey, C. (author)
Sorri, J. (author)
Uusitalo, J. (author)
Wyss, Ramon A. (author)
KTH,Kärnfysik
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 (creator_code:org_t)
AIP, 2011
2011
English.
In: AIP Conf. Proc.. - : AIP. - 9780735409835 ; , s. 29-34
  • Conference paper (peer-reviewed)
Abstract Subject headings
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  • Excited states in the extremely neutron-deficient isotope 172Hg have been established for the first time. The 96Ru( 78Kr,2n) reaction was employed to populate excited states in 172Hg with a cross section σ ≈ 15 nb. The highly selective Recoil-Decay Tagging (RDT) technique was used to obtain clean in-beam γ-ray spectra for 172Hg. The yrast ground-state band has tentatively been established up to I=6h̄. The data have been interpreted within the framework of total Routhian surface and quasiparticle random phase approximation calculations. In addition to the well-known features of shape coexistence previously observed in light Hg isotopes, the systematic trends in the energy of the yrast 2 + and 4 + states in the chain of Hg isotopes indicate a pronounced vibrational collectivity which is reduced in strength, but at the same time shows a higher degree of harmonicity, as the neutron number decreases below the neutron midshell.

Subject headings

NATURVETENSKAP  -- Fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences (hsv//eng)

Keyword

172Hg
JUROGAM and GREAT spectrometers
QRPA calculations
RITU gas-filled separator
TRS calculations

Publication and Content Type

ref (subject category)
kon (subject category)

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