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

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

doi:10.1103/PhysRevC.86.054321

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

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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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 183^,184 ^,186Hf, 186^,187Ta,186W, 190^,192 ^,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.

Original language	English
Article number	054321
Journal	Physical Review C - Nuclear Physics
Volume	86
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevC.86.054321
Publication status	Published - 29 Nov 2012

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Reed, M. W., Walker, P. M., Cullen, I. J., Litvinov, Y. A., Shubina, D., Dracoulis, G. D., Blaum, K., 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., ... Yamaguchi, T. (2012). Long-lived isomers in neutron-rich Z=72 76 nuclides. Physical Review C - Nuclear Physics, 86(5), Article 054321. https://doi.org/10.1103/PhysRevC.86.054321

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

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 183,184 ,186Hf, 186,187Ta,186W, 190,192 ,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.",

author = "Reed, {M. W.} and Walker, {P. M.} and Cullen, {I. J.} and Litvinov, {Yu A.} and D. Shubina and Dracoulis, {G. D.} and K. Blaum and F. Bosch and C. Brandau and Carroll, {J. J.} and Cullen, {D. M.} and Deo, {A. Y.} and B. Detwiler and C. Dimopoulou and Dong, {G. X.} and F. Farinon and H. Geissel and E. Haettner and M. Heil and Kempley, {R. S.} and R. Kn{\"o}bel and C. Kozhuharov and J. Kurcewicz and N. Kuzminchuk and S. Litvinov and Z. Liu and R. Mao and C. Nociforo and F. Nolden and Pla{\ss}, {W. R.} and Zs Podolyak and A. Prochazka and C. Scheidenberger and M. Steck and Th St{\"o}hlker and B. Sun and Swan, {T. P.D.} and G. Trees and H. Weick and N. Winckler and M. Winkler and Woods, {P. J.} and Xu, {F. R.} and T. Yamaguchi",

year = "2012",

month = nov,

day = "29",

doi = "10.1103/PhysRevC.86.054321",

language = "English",

volume = "86",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

publisher = "American Physical Society",

number = "5",

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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, Knöbel, 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, Stöhlker, T, Sun, B, Swan, TPD, Trees, G, Weick, H, Winckler, N, Winkler, M, Woods, PJ, Xu, FR & Yamaguchi, T 2012, 'Long-lived isomers in neutron-rich Z=72 76 nuclides', Physical Review C - Nuclear Physics, vol. 86, no. 5, 054321. https://doi.org/10.1103/PhysRevC.86.054321

TY - JOUR

T1 - Long-lived isomers in neutron-rich Z=72 76 nuclides

AU - Reed, M. W.

AU - Walker, P. M.

AU - Cullen, I. J.

AU - Litvinov, Yu A.

AU - Shubina, D.

AU - Dracoulis, G. D.

AU - Blaum, K.

AU - Bosch, F.

AU - Brandau, C.

AU - Carroll, J. J.

AU - Cullen, D. M.

AU - Deo, A. Y.

AU - Detwiler, B.

AU - Dimopoulou, C.

AU - Dong, G. X.

AU - Farinon, F.

AU - Geissel, H.

AU - Haettner, E.

AU - Heil, M.

AU - Kempley, R. S.

AU - Knöbel, R.

AU - Kozhuharov, C.

AU - Kurcewicz, J.

AU - Kuzminchuk, N.

AU - Litvinov, S.

AU - Liu, Z.

AU - Mao, R.

AU - Nociforo, C.

AU - Nolden, F.

AU - Plaß, W. R.

AU - Podolyak, Zs

AU - Prochazka, A.

AU - Scheidenberger, C.

AU - Steck, M.

AU - Stöhlker, Th

AU - Sun, B.

AU - Swan, T. P.D.

AU - Trees, G.

AU - Weick, H.

AU - Winckler, N.

AU - Winkler, M.

AU - Woods, P. J.

AU - Xu, F. R.

AU - Yamaguchi, T.

PY - 2012/11/29

Y1 - 2012/11/29

N2 - 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 183,184 ,186Hf, 186,187Ta,186W, 190,192 ,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.

AB - 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 183,184 ,186Hf, 186,187Ta,186W, 190,192 ,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.

UR - http://www.scopus.com/inward/record.url?scp=84870873959&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.86.054321

DO - 10.1103/PhysRevC.86.054321

M3 - Article

SN - 0556-2813

VL - 86

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 5

M1 - 054321

ER -

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

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