Search for very long-lived isomers in the hafnium-tungsten region
Zs. PodolyákDepartment of Physics, University of Surrey, Guildford GU2 7XH, United KingdomP. M. WalkerDepartment of Physics, University of Surrey, Guildford GU2 7XH, United KingdomD. M. CullenDepartment of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE, United KingdomG.D. DracoulisDepartment of Nuclear Physics, Research School of Physical Sciences and Engineering, Australian National University, Canberra ACT 0200, AustraliaP. FallonLawrence Berkeley National Laboratory, Berkeley, California 94720B. FairchildLawrence Berkeley National Laboratory, Berkeley, California 94720K. HauschildLawrence Livermore National Laboratory, Livermore, California 94550A. O. MacchiavelliLawrence Berkeley National Laboratory, Berkeley, California 94720D. P. McNabbLawrence Livermore National Laboratory, Livermore, California 94550A. SaveliusDepartment of Physics, University of Jyväskylä, Jyväskylä F-40351, FinlandD. WardLawrence Berkeley National Laboratory, Berkeley, California 94720C. WheldonDepartment of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
ABI
Abstract
Targets of ${}^{48}\mathrm{Ca}$ have been bombarded with ${}^{134,136}\mathrm{Xe}$ beams as part of a search for long-lived, high-K states in well-deformed nuclei with $A\ensuremath{\approx}180.$ Several known isomers were observed by off-line \ensuremath{\gamma}-ray detection, and limits have been established for high-K isomer production in various isotopes of hafnium $(A=175--178),$ tantalum $(A=177--181),$ and tungsten $(A=177--181).$
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