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Long-lived isomers in neutron-rich Z=72-76 nuclides

Reed, MW, Walker, PM, Cullen, IJ, Litvinov, YA, Shubina, D, Dracoulis, GD, Blaum, K, Bosch, F, Brandau, C, Carroll, JJ, Cullen, DM, Deo, AY, Detwiler, B, Dimopoulou, C, Dong, GX, Farinon, F, Geissel, H, Haettner, E, Heil, M, Kempley, RS, Knoebel, R, Kozhuharov, C, Kurcewicz, J, Kuzminchuk, N, Litvinov, S, Liu, Z, Mao, R, Nociforo, C, Nolden, F, Plass, WR, Podolyak, Z, Prochazka, A, Scheidenberger, C, Steck, M, Stoehlker, T, Sun, B, Swan, TPD, Trees, G, Weick, H, Winckler, N, Winkler, M, Woods, PJ, Xu, FR and Yamaguchi, T (2012) Long-lived isomers in neutron-rich Z=72-76 nuclides PHYSICAL REVIEW C, 86 (5), ARTN 0.

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Abstract

A study of neutron-rich isotopes in the A=185 region of the nuclear chart has uncovered long-lived (>1s) isomers in several isotopes of hafnium, tantalum, tungsten, rhenium, and osmium. The region was accessed via the use of projectile fragmentation with the UNILAC-SIS accelerators at GSI. Fragmentation products of 197Au were passed through the fragment separator (FRS) and injected into the experimental storage ring (ESR), where single-ion identifications could be made. Evidence is presented for isomers in 183184 186Hf, 186187Ta,186W, 190192 194Re, and 195Os with excitation energies in the range of 0.13.0 MeV. The lightest of these nuclides have well deformed prolate shapes, while the heaviest are transitional and susceptible to shape changes. Their properties are interpreted with the help of multi-quasiparticle and potential-energy- surface calculations. ©2012 American Physical Society.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
AuthorsEmailORCID
Reed, MWUNSPECIFIEDUNSPECIFIED
Walker, PMUNSPECIFIEDUNSPECIFIED
Cullen, IJUNSPECIFIEDUNSPECIFIED
Litvinov, YAUNSPECIFIEDUNSPECIFIED
Shubina, DUNSPECIFIEDUNSPECIFIED
Dracoulis, GDUNSPECIFIEDUNSPECIFIED
Blaum, KUNSPECIFIEDUNSPECIFIED
Bosch, FUNSPECIFIEDUNSPECIFIED
Brandau, CUNSPECIFIEDUNSPECIFIED
Carroll, JJUNSPECIFIEDUNSPECIFIED
Cullen, DMUNSPECIFIEDUNSPECIFIED
Deo, AYUNSPECIFIEDUNSPECIFIED
Detwiler, BUNSPECIFIEDUNSPECIFIED
Dimopoulou, CUNSPECIFIEDUNSPECIFIED
Dong, GXUNSPECIFIEDUNSPECIFIED
Farinon, FUNSPECIFIEDUNSPECIFIED
Geissel, HUNSPECIFIEDUNSPECIFIED
Haettner, EUNSPECIFIEDUNSPECIFIED
Heil, MUNSPECIFIEDUNSPECIFIED
Kempley, RSUNSPECIFIEDUNSPECIFIED
Knoebel, RUNSPECIFIEDUNSPECIFIED
Kozhuharov, CUNSPECIFIEDUNSPECIFIED
Kurcewicz, JUNSPECIFIEDUNSPECIFIED
Kuzminchuk, NUNSPECIFIEDUNSPECIFIED
Litvinov, SUNSPECIFIEDUNSPECIFIED
Liu, ZUNSPECIFIEDUNSPECIFIED
Mao, RUNSPECIFIEDUNSPECIFIED
Nociforo, CUNSPECIFIEDUNSPECIFIED
Nolden, FUNSPECIFIEDUNSPECIFIED
Plass, WRUNSPECIFIEDUNSPECIFIED
Podolyak, ZUNSPECIFIEDUNSPECIFIED
Prochazka, AUNSPECIFIEDUNSPECIFIED
Scheidenberger, CUNSPECIFIEDUNSPECIFIED
Steck, MUNSPECIFIEDUNSPECIFIED
Stoehlker, TUNSPECIFIEDUNSPECIFIED
Sun, BUNSPECIFIEDUNSPECIFIED
Swan, TPDUNSPECIFIEDUNSPECIFIED
Trees, GUNSPECIFIEDUNSPECIFIED
Weick, HUNSPECIFIEDUNSPECIFIED
Winckler, NUNSPECIFIEDUNSPECIFIED
Winkler, MUNSPECIFIEDUNSPECIFIED
Woods, PJUNSPECIFIEDUNSPECIFIED
Xu, FRUNSPECIFIEDUNSPECIFIED
Yamaguchi, TUNSPECIFIEDUNSPECIFIED
Date : 29 November 2012
Identification Number : 10.1103/PhysRevC.86.054321
Uncontrolled Keywords : Science & Technology, Physical Sciences, Physics, Nuclear, Physics, SCHOTTKY MASS-SPECTROMETRY, STORAGE-RING ESR, QUASI-PARTICLE STATES, HEAVY-ION STORAGE, PROJECTILE FRAGMENTS, EXOTIC NUCLEI, ATOMIC-NUCLEI, K-ISOMERS, DECAY, ISOTOPES
Related URLs :
Additional Information : Copyright 2012 The American Physical Society.
Depositing User : Symplectic Elements
Date Deposited : 28 Jan 2013 11:47
Last Modified : 11 Jun 2015 13:33
URI: http://epubs.surrey.ac.uk/id/eprint/745755

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