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

Reed, M.W.; Walker, P.M.; Cullen, I.J.; Litvinov, Yury; Shubina, Daria; Dracoulis, G.D.; Blaum, Klaus; Bosch, F.; Brandau, C.; Carroll, J.J.; Cullen, D.M.; Deo, A.Y.; Detwiler, B.; Dimopoulou, C.; Dong, G.X.; Farinon, F.; Geissel, H.; Haettner, E.; Heil, M.; Kempley, R.S.; Knöbel, R.; Kozhuharov, C.; Kurcewicz, J.; Kuzminchuk, N.; Litvinov, S.; Liu, Z.; Mao, R.; Nociforo, C.; Nolden, F.; Plaß, W.R.; Podolyak, Zs.; Prochazka, A.; Scheidenberger, C.; Steck, M.; Stöhlker, Th.; Sun, B.; Swan, T.P.D.; Trees, G.; Weick, H.; Winckler, N.; Winkler, M.; Woods, P.J.; Xu, F.R.; Yamaguchi., T.

doi:10.1103/PhysRevC.86.054321

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

Reed, M., Walker, P., Cullen, I., Litvinov, Y., Shubina, D., Dracoulis, G., et al. (2012). Long-lived isomers in neutron-rich Z = 72–76 nuclides. Physical Review C, 86(5): 054321, pp. 1-14. doi:10.1103/PhysRevC.86.054321.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0010-249E-5 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0010-249F-3

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http://link.aps.org/doi/10.1103/PhysRevC.86.054321 (Publisher version) Open Access status unknown

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Creators:
Reed, M.W.^{1, 2}, Author
Walker, P.M.^{1, 3}, Author
Cullen, I.J.¹, Author
Litvinov, Yury^{4, 5}, Author
Shubina, Daria⁴, Author
Dracoulis, G.D.², Author
Blaum, Klaus⁴, Author
Bosch, F.⁵, Author
Brandau, C.^{6, 7}, Author
Carroll, J.J.⁸, Author
Cullen, D.M.⁹, Author
Deo, A.Y.¹, Author
Detwiler, B.¹⁰, Author
Dimopoulou, C.⁵, Author
Dong, G.X.¹¹, Author
Farinon, F.⁵, Author
Geissel, H.^{5, 12}, Author
Haettner, E.¹², Author
Heil, M.⁵, Author
Kempley, R.S.¹, Author
Knöbel, R.⁵, AuthorKozhuharov, C.⁵, AuthorKurcewicz, J.⁵, AuthorKuzminchuk, N.⁵, AuthorLitvinov, S.⁵, AuthorLiu, Z.¹³, AuthorMao, R.¹⁴, AuthorNociforo, C.⁵, AuthorNolden, F.⁵, AuthorPlaß, W.R.¹², AuthorPodolyak, Zs.¹, AuthorProchazka, A.⁵, AuthorScheidenberger, C.^{5, 12}, AuthorSteck, M.⁵, AuthorStöhlker, Th.^{5, 15}, AuthorSun, B.¹⁶, AuthorSwan, T.P.D.¹, AuthorTrees, G.¹⁰, AuthorWeick, H.⁵, AuthorWinckler, N.^{4, 5}, AuthorWinkler, M.⁵, AuthorWoods, P.J.¹³, AuthorXu, F.R.¹¹, AuthorYamaguchi., T.¹⁷, Author more..

Affiliations:
1Department of Physics, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom, ou_persistent22
2Department of Nuclear Physics, R.S.P.E., Australian National University, Canberra ACT 0200, Australia, ou_persistent22
3CERN, CH-1211 Geneva 23, Switzerland, ou_persistent22
4Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society, ou_904548
5GSI Helmholtzzentrum für Schwerionenforschung , Planckstraße 1, 64291 Darmstadt, Germany, ou_persistent22
6ExtreMe Matter Institute EMMI and Research Division, GSI Helmholtzzentrum für Schwerionenforschung, Planckstraße 1, 64291 Darmstadt, Germany, ou_persistent22
7Institut für Atom- und Molekülphysik, Justus-Liebig-Universität, 35392 Giessen, Germany, ou_persistent22
8US Army Research Laboratory, 800 Powder Mill Road, Adelphi Maryland, USA, ou_persistent22
9Schuster Laboratory, University of Manchester, Manchester M13 9PL, United Kingdom, ou_persistent22
10Youngstown State University, One University Plaza, Youngstown, Ohio 44555, USA, ou_persistent22
11Department of Technical Physics, Peking University, Beijing 100871, China, ou_persistent22
12II Physikalisches Institut, Justus-Liebig-Universität Gießen, 35392 Gießen, Germany, ou_persistent22
13School of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom, ou_persistent22
14Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China, ou_persistent22
15Physikalisches Institut, Universität Heidelberg, Philosophenweg 12, 69120 Heidelberg, Germany, ou_persistent22
16School of Physics and Nuclear Energy Engineering, Beihaug University, 100191 Beijing, China, ou_persistent22
17Graduate School of Science and Engineering, Saitama University, Saitama 338-8570, Japan, ou_persistent22

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Abstract: A study of neutron-rich isotopes in the A=185 region of the nuclear chart has uncovered long-lived (>1 s) 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 ^183,184,186Hf, ^186,187Ta, ¹⁸⁶W, ^190,192,194Re, and ¹⁹⁵Os with excitation energies in the range of 0.1–3.0 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.

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Language(s): eng - English

Dates: Date issued: 2012-11-29

Publication Status: Issued

Pages: 14

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Rev. Type: Peer

Identifiers: DOI: 10.1103/PhysRevC.86.054321

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Title: Physical Review C

Source Genre: Journal

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Publ. Info: New York, NY : Published for the American Physical Society by the American Institute of Physics

Pages: - Volume / Issue: 86 (5) Sequence Number: 054321 Start / End Page: 1 - 14 Identifier: ISSN: 0556-2813
CoNE: https://pure.mpg.de/cone/journals/resource/954925225009