Spectroscopy of 166W and 167W and alignment effects in very neutron-deficient tungsten nuclei |
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| Authors: | J Gerl GD Dracoulis AP Byrne AR Poletti SJ Poletti AE Stuchbery |
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| Institution: | Department of Nuclear Physics, Research School of Physical Sciences, Australian National University, GPO Box 4, ACT 2601, Australia |
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| Abstract: | High-spin states in 166W and 167W were populated by the reactions 142Nd(28Si,4n)166W, 142Nd(28Si,3n)167W and 147Sm(24Mg,4n)167W. From the γ-decay the yrast band and a side band (with assumed negative parity) were identified to high spins. There is evidence for a second side band in 167W. The observed backbend of the yrast sequences and band-crossing anomalies in the side bands are discussed in conjunction with cranked-shell-model calculations. A systematic comparison is made between the yrast bands of 166,167,168W in order to understand the structure of the second backbend in 168W. |
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| Keywords: | Nuclear Reactions |
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