Backbending in 180W
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Walker, P. M.
Yeung, K. C.
Dracoulis, G. D.
Regan, P. H.
Lane, G. J.
Davidson, P. M.
Stuchbery, A. E.
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Abstract
A Fermi-aligned (i 13 2)2 rotational band, with K≈8, has been observed in an even-even nucleus, 180W. Its structure corresponds to a t-band in the tilted-cranking representation. It crosses the ground-state band at I = 16 h {combining short stroke overlay}, giving rise to backbending in the yrast sequence. Contrary to the usual interpretation, backbending in this case is not caused by the s-band. Comparison is made with other possible t-band crossings in the A ≈ 180 region.
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Physics Letters B
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