1. |
- KORTEN, W, et al.
(author)
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ON THE DECAY OF THE SUPERDEFORMED BAND IN PB-194
- 1993
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In: Zeitschrift für Physik A Hadrons and Nuclei. - 0939-7922 .- 1431-5831. ; 344:4, s. 475-476
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Journal article (peer-reviewed)abstract
- We report on new results for the decay of the superdeformed (SD) band in 194Pb. No transitions linking the SD structure with the known level scheme of 194Pb could be found, but the feeding intensities into the normal-deformed states are determined and limits on the one-step decay of the SD band are given.
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2. |
- Cederwall, Bo, et al.
(author)
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HIGH-SPIN STATES IN BA-121 AND DEFORMATION-DEPENDENT ALIGNMENTS
- 1991
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In: Nuclear Physics A. - 0375-9474 .- 1873-1554. ; 529:2, s. 410-428
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Journal article (peer-reviewed)abstract
- The high-spin structure of 121Ba has been investigated by in-beam gamma-ray spectroscopic techniques. Rotational bands based on the h11/2, g7/2 and tentatively d5/2 quasineutron configurations have been established. The alignments of h11/2 protons and neutrons are identified at HBAR-omega-c = 0.35-0.40 MeV in the h11/2 and g7/2 bands whereas an alignment occurs at HBAR-omega-c = 0.29 MeV in the (tentatively) d5/2 band. B(M1)/B(E2) ratios were extracted and contributed to the configuration assignments. The results are interpreted within the cranked mean-field approach.
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3. |
- Cederwall, Bo, et al.
(author)
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HIGH-SPIN STATES OF BA-120
- 1991
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In: Zeitschrift für Physik A Hadrons and Nuclei. - 0939-7922 .- 1431-5831. ; 338:4, s. 461-462
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Journal article (peer-reviewed)abstract
- The very neutron deficient nucleus 120Ba has been investigated in a high-spin gamma-spectroscopic study. The yrast band of 120Ba is extended up to spin 22 h and one tentatively assigned negative-parity side band is observed up to spin 15 h. The experimental results are compared with Total Routhian Surface calculations.
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4. |
- Cederwall, Bo, et al.
(author)
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HIGH-SPIN STATES OF IR-175 - QUASIPROTON-INDUCED SHAPES AND EXTREME INTERACTION STRENGTH
- 1991
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In: Physical Review C. Nuclear Physics. - 0556-2813 .- 1089-490X. ; 43:5, s. R2031-R2034
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Journal article (peer-reviewed)abstract
- For the first time, excited states of 175Ir have been observed. Remarkably different developments with rotation are found in bands built on the [541]1/2-, [505]11/2-, and [660]1/2+ orbitals. The data are analyzed within the deformed shell model. The pattern of the [505]11/2- band is interpreted as a combined stretching and alignment effect. For the [606]1/2+ band, an extremely strong interaction with the S band results in an almost entirely smeared out alignment process not explained by standard calculations. This feature might indicate a strong residual pn interaction.
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5. |
- Cederwall, Bo, et al.
(author)
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NEUTRON AND PROTON H11/2 ALIGNMENT EFFECTS IN LA-121
- 1991
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In: Zeitschrift für Physik A Hadrons and Nuclei. - 0939-7922 .- 1431-5831. ; 338:4, s. 463-464
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Journal article (peer-reviewed)abstract
- In a gamma-spectroscopic study, excited states in the very neutron deficient nucleus 121La have been established for the first time. Rotational bands build on the 9/2+[404] and 1/2-[550] Nilsson orbitals are observed up to a maximum spin of tentatively 51/2 h. The experimental results are compared with Total Routhian Surface calculations.
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6. |
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7. |
- Cederwall, Bo, et al.
(author)
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SIGNATURE INVERSION IN CS-120 - EVIDENCE FOR A RESIDUAL PN INTERACTION
- 1992
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In: Nuclear Physics A. - 0375-9474 .- 1873-1554. ; 542:3, s. 454-478
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Journal article (peer-reviewed)abstract
- High-spin states have been observed in the odd-odd isotope 120Cs in S-32-induced reactions. The previously known band is extended to higher spin and several new bands are identified. Band-head configurations have been inferred by comparing the band properties with known bands in the odd nuclei 121Cs and 121Ba. A remarkable signature inversion is observed in the pi-h11/2 x nu-h11/2 band. The experimental data are compared with calculations made within the total routhian surface model and the two-particle plus triaxial rotor model. It is concluded that a significant residual pn interaction rather than triaxiality is responsible for the signature inversion phenomenon in the pi-h11/2 x nu-h11/2 band of 120Cs.(~)[GRAPHICS]
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8. |
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9. |
- JUUTINEN, S, et al.
(author)
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EVIDENCE FOR BAND TERMINATION IN XE-118
- 1991
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In: Zeitschrift für Physik A Hadrons and Nuclei. - 0939-7922 .- 1431-5831. ; 338:3, s. 365-366
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Journal article (peer-reviewed)abstract
- The yrast band of Xe118 has been extended up to tentatively I-pi = 34+ in a heavy-ion in-beam gamma-spectroscopic study using the NORDBALL detector array. A band crossing is observed at the highest spins and interpreted within the Modified Oscillator Model as a transition to a terminating band.
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10. |
- JUUTINEN, S, et al.
(author)
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SHAPE COEXISTENCE IN I-117
- 1992
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In: Zeitschrift für Physik A Hadrons and Nuclei. - 0939-7922 .- 1431-5831. ; 344:2, s. 223-224
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Journal article (peer-reviewed)abstract
- The 117I nucleus has been investigated in a high-spin gamma-spectroscopic study using the NORDBALL detector array. The observed level structures are interpreted as resulting from coexisting collective prolate and oblate as well as non-collective oblate shapes.
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