Triaxial superdeformed bands in Lu and enhanced E1 decay-out strength

Törmänen, S.; Ødegård, S. W.; Hagemann, G.B.; Harsmann, A.; Bergström, M.; Bark, R. A.; Herskind, B.; Sletten, G.; Tjøm, P.O.; Görgen, A.; Hübel, H.; Aengenvoort, B.; Severen, U. J. van; Fahlander, C.; Napoli, D. R.; Lenzi, S. M.; Petrache, C. M.; Ur, C. A.; Jensen, H.J.; Ryde, H.; Bengtsson, R.; Bracco, A.; Frattini, S.; Chapman, R.; Cullen, D. M.; King, S. L.

doi:10.1016/s0370-2693(99)00346-9

Cited by 40 publications

(10 citation statements)

References 11 publications

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“…[56] is based on Ref. [57] where band TSD3 is given positive parity based on the assumption that it is unlikely with a stretched M1 transition with such a high energy as 1532 keV. We find this conclusion questionable because, in the decay of TSD1, such transitions with 1452 and 1541 keV have been observed in Refs.…”

Section: A Observed and Calculated Total Energiesmentioning

confidence: 76%

“…We find this conclusion questionable because, in the decay of TSD1, such transitions with 1452 and 1541 keV have been observed in Refs. [57] and [56], respectively. Indeed, the similar decays of the TSD1 and TSD3 bands rather suggest to us that they have the same parity, and this conclusion gets additional strong support from the comparison with calculations, indicating that these two bands are signature partners.…”

Section: A Observed and Calculated Total Energiesmentioning

confidence: 99%

“…Note how these differences are almost identical for most of the bands where the differences between experiment and calculations for the low-spin states are understood from the neglect of pairing correlations in the CNS calculations. The experimental data are taken from Refs [7,[53][54][55][56][57][58]…”

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confidence: 99%

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Interpretation of the large-deformation high-spin bands in selectA=158–168 nuclei

et al. 2012

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The high-spin rotational bands in 168 Hf and the triaxial bands in Lu nuclei are analyzed using the configuration-constrained cranked Nilsson-Strutinsky (CNS) model. Special attention is given to the up-sloping extruder orbitals. The relative alignment between the bands which appear to correspond to triaxial shape is also considered, including the yrast ultrahigh-spin band in 158 Er. This comparison suggests that the latter band is formed from rotation around the intermediate axis. In addition, the standard approximations of the CNS approach are investigated, indicating that the errors which are introduced by the neglect of off-shell matrix elements and the cutoff at nine oscillator shells (N max = 8) are essentially negligible compared to other uncertainties. On the other hand, the full inclusion of the hexadecapole degree of freedom is more significant; for example it leads to a decrease of the total energy of ∼ 500 keV in the triaxial superdeformed (TSD) region of 168 Hf.

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Section: A Observed and Calculated Total Energiesmentioning

confidence: 76%

Section: A Observed and Calculated Total Energiesmentioning

confidence: 99%

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Interpretation of the large-deformation high-spin bands in selectA=158–168 nuclei

et al. 2012

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“…In 1991, we have designed and installed GASP, a gamma array composed of 40 HPGe detectors, that have been run since 1992 [7] till 2012. During the same period, we have installed other gamma arrays at LNL in collaboration with institutes of all Europe, like EUROBALL [8][9][10] in 1997-1998, CLARA [11] from 2004 to 2008 and recently, after the online gamma tracking demonstration phase, we have performed the first physics campaign with AGATA in the period of 2009-2011 [3,12]. The experience accumulated in these years spurred us to start a multidisciplinary research program for developing new technologies for the fabrication of the next generation of highly segmented HPGe detectors for AGATA.…”

Section: Introductionmentioning

confidence: 99%

New Developments in HPGe Detectors for High Resolution Detection

Napoli¹,

Maggioni²,

Carturan³

et al. 2017

Acta Phys. Pol. B

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High-Purity Germanium (HPGe) detectors continue to be a fundamental tool in nuclear gamma spectroscopy. The tracking of the gamma interactions inside the HPGe crystals is opening a new era in the use of these detectors for both basic science and applications, but they have also shown that new R&D is necessary for the production of even better and more reliable highly segmented detectors. In this work, we present recent results obtained in the framework of a multidisciplinary research program in HPGe detector technologies and we discuss the influence of these studies on the use of HPGe detectors.

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“…It has been reported that over 20 triaxial superdeformation bands were found in Lu, the typical element [6][7][8][9] . Many triaxial superdeformation bands have also been found in Hf isotopes--the neighbour of Lu: three in 168 Hf [10] , two in 170 Hf [11,12] , four in 174 Hf [13] , and two in 175 Hf [14] .…”

Section: Introductionmentioning

confidence: 99%

Calculation of triaxial superdeformation in 174Hf

Shen

et al. 2007

SCI CHINA SER G

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A two-dimensional Total Routhian Surface (TRS) calculation with the fixed hexadecapole deformation ε 4 = 0.03 was carried out for several configurations of 174 Hf. Results indicate that the shell corrections have an important contribution to the formation of triaxial superdeformation in 174 Hf and some possible configuration assignments are made to the 4 TSD bands experimentally found in 174 Hf.Total Routhian Surface (TRS), triaxial superdeformation, configuration

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Triaxial superdeformed bands in Lu and enhanced E1 decay-out strength

Cited by 40 publications

References 11 publications

Interpretation of the large-deformation high-spin bands in selectA=158–168 nuclei

Interpretation of the large-deformation high-spin bands in selectA=158–168 nuclei

New Developments in HPGe Detectors for High Resolution Detection

Calculation of triaxial superdeformation in 174Hf

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