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Loss of alignment gain in the πh 9/2[541 1/2−] ⊗ (νi 13/2)2 band in 167Tm and neighbouring odd-Z N = 98 nuclei |
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| Authors: | H J Jensen R A Bark R Bengtsson G B Hagemann P O Tjøm S Y Araddad C W Beausang R Chapman J Copnell A Fitzpatrick S J Freeman S Leoni J C Lisle J Simpson A G Smith D M Thompson S J Warburton J Wrzesiński |
| Institution: | 1. The Niels Bohr Institute, Tandem Accelerator Laboratory, DK-4000, Roskilde, Denmark 2. Department of Mathematical Physics, Lund University, P. O. Box 118, S-221 00, Lund, Sweden 3. Department of Physics, University of Oslo, Oslo, Norway 4. Schuster Laboratory, University of Manchester, Manchester, M13 9PL, UK 5. Oliver Lodge Laboratory, University of Liverpool, P. O. Box 147, Liverpool, L69 3BX, UK 6. Department of Physics, University of Paisley, Paisley, PAI 2BE, Scotland 7. Dipartemento di Fisica, Universitá di Milano, Via Celoria 16, 20133, Milano, Italy 8. Daresbury Laboratory, Daresbury, Warrington, WA4 4AD, UK 9. Niewodniczański Institute of Nuclear Physics, PL-31-342, Cracow, Poland |
| Abstract: | Theπh9/2541 1/2?] band in 167Tm has been studied through the 124Sn(48Ca, p4n)167Tm reaction at E beam = 210 MeV. The favoured signature of the πh9/2541 1/2?] band is observed to spin 61/2h?. A remarkable small gain in aligned angular momentum at the AB-band crossing has been found. The crossing frequency and the gain in aligned angular momentum for 167Tm are compared with data for the N = 98 isotones of Lu, Ta and Re, and contrasted with Cranked Shell Model predictions, based on frequency diabatic configurations. Large deviations are found for the gain in aligned angular momentum. |
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