Evidence of antimagnetic rotation in odd-A Cd-105
Dec, 2010
5 pages
Published in:
- Phys.Rev.C 82 (2010) 061308
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Abstract: (APS)
The lifetimes of the levels above spin 23/2− in the negative-parity yrast band of Cd105 have been measured using the Doppler shift attenuation method. The obtained B(E2) values are small and show a decrease with an increase in spin. This establishes, for the first time, antimagnetic rotation (AMR) in an odd-A nucleus. An excellent agreement between the theoretical (semiclassical model) and experimental results along with a large I(2)/B(E2) ratio for the states strongly suggests that the structure of the levels beyond spin 23/2− has the character of a twin-shears type AMR band resulting from the coupling of a pair of g9/2 proton holes with aligned h11/2 and (g7/2)2 neutron particles, along with a small contribution from the core rotation.- 27.60.+j
- 23.20.Lv
- 21.10.Tg
- 21.10.Re
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