Change in structure between the I=1/2 states in 181Tl and 177,179Au

Cubiss James G.; A. E. Barzakh; Maxim Seliverstov; Andrei N. Andreyev; B. Andel; Stanislav Antalic; Philippe Ascher; Dimitar Atanasov; D. Beck; Jacek Bieron; Klaus Blaum; Christopher Borgmann; Martin Breitenfeldt; L. Capponi; Thomas Elias Cocolios; Thomas Day Goodacre; Xavier Derkx; Hilde De Witte; Jytte Elseviers; D.V. Fedorov; Valentin N. Fedosseev; Stephan Fritzsche; Liam Paul Gaffney; Lars Ghys; Fritz Peter Hessberger; Mark Huyse; Nobuaki Imai; Z. Kalaninova; D. Kisler; Ulli Koester; Magdalena Kowalska; S. Kreim; Joseph F.W. Lane; Valentina Liberati; David Lunney; Kara M Lynch; Vladimir Manea; Bruce A Marsh; S. Mitsuoka; P.L. Molkanov; Y. Nagame; Dennis Neidherr; K. Nishio; S. Ota; Dieter Pauwels; Lucia Popescu; Deyan Radulov; Elisa Rapisarda; J. P. Revill; M. Rosenbusch; Ralf Erik Rossel; Sebastian Rothe; Karanjeet Sandhu; Lutz Schweikhard; Simon Sels; V.L. Truesdale; Celine Van Beveren; Paul Van den Bergh; Y. Wakabayashi; Piet Van Duppen; K.D.A. Wendt; Frank Wienholtz; B. W.  Whitmore; G.L. Wilson; R.N. Wolf; Kai Zuber

doi:10.1016/j.physletb.2018.10.005

Change in structure between the I=1/2 states in 181Tl and 177,179Au

Cubiss James G., A. E. Barzakh, Maxim Seliverstov, Andrei N. Andreyev, B. Andel, Stanislav Antalic, Philippe Ascher, Dimitar Atanasov, D. Beck, Jacek Bieron, Klaus Blaum, Christopher Borgmann, Martin Breitenfeldt, L. Capponi, Thomas Elias Cocolios, Thomas Day Goodacre, Xavier Derkx, Hilde De Witte, Jytte Elseviers, D.V. FedorovValentin N. Fedosseev, Stephan Fritzsche, Liam Paul Gaffney, Lars Ghys, Fritz Peter Hessberger, Mark Huyse, Nobuaki Imai, Z. Kalaninova, D. Kisler, Ulli Koester, Magdalena Kowalska, S. Kreim, Joseph F.W. Lane, Valentina Liberati, David Lunney, Kara M Lynch, Vladimir Manea, Bruce A Marsh, S. Mitsuoka, P.L. Molkanov, Y. Nagame, Dennis Neidherr, K. Nishio, S. Ota, Dieter Pauwels, Lucia Popescu, Deyan Radulov, Elisa Rapisarda, J. P. Revill, M. Rosenbusch, Ralf Erik Rossel, Sebastian Rothe, Karanjeet Sandhu, Lutz Schweikhard, Simon Sels, V.L. Truesdale, Celine Van Beveren, Paul Van den Bergh, Y. Wakabayashi, Piet Van Duppen, K.D.A. Wendt, Frank Wienholtz, B. W. Whitmore, G.L. Wilson, R.N. Wolf, Kai Zuber

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Abstract

The first accurate measurements of the alpha-decay branching ratio and half-life of the Ipi = 1/2+ ground state in 181Tl have been made, along with the first determination of the magnetic moments and I=1/2 spin assignments of the ground states in 177,179Au. The results are discussed within the complementary systematics of the reduced alpha-decay widths and nuclear g factors of low-lying, Ipi = 1/2+ states in the neutron-deficient lead region. The finding shed light on the unexpected hindrance of the 1/2+->1/2+, 181Tl(g) -> 177Au(g) alpha decay, which is explained by a mixing of pi3s1/2 and pi2d3/2 configurations in 177Au(g), whilst 181Tl(g) remains a near-pure pi3s1/2. This conclusion is inferred from the g factor of 177Au(g) which has an intermediate value between those of pi3s1/2 and pi2d3/2 states. A similar mixed configuration is proposed for the Ipi=1/2+ ground state of 179Au. This mixing may provide evidence for triaxial shapes in the ground states in the these nuclei.

Original language	English
Pages (from-to)	355-363
Journal	Physical Review C
Volume	786
DOIs	https://doi.org/10.1016/j.physletb.2018.10.005
State	Published - 5 Oct 2018

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Change in structure between the I=1-2 states in 181Tl and 177,179AuFinal published version, 849 KBLicense:

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James G., C., Barzakh, A. E., Seliverstov, M., Andreyev, A. N., Andel, B., Antalic, S., Ascher, P., Atanasov, D., Beck, D., Bieron, J., Blaum, K., Borgmann, C., Breitenfeldt, M., Capponi, L., Cocolios, T. E., Day Goodacre, T., Derkx, X., De Witte, H., Elseviers, J., ... Zuber, K. (2018). Change in structure between the I=1/2 states in 181Tl and 177,179Au. Physical Review C, 786, 355-363. https://doi.org/10.1016/j.physletb.2018.10.005

@article{f2ce6af314384cf3989de649c0deb724,

title = "Change in structure between the I=1/2 states in 181Tl and 177,179Au",

abstract = "The first accurate measurements of the alpha-decay branching ratio and half-life of the Ipi = 1/2+ ground state in 181Tl have been made, along with the first determination of the magnetic moments and I=1/2 spin assignments of the ground states in 177,179Au. The results are discussed within the complementary systematics of the reduced alpha-decay widths and nuclear g factors of low-lying, Ipi = 1/2+ states in the neutron-deficient lead region. The finding shed light on the unexpected hindrance of the 1/2+->1/2+, 181Tl(g) -> 177Au(g) alpha decay, which is explained by a mixing of pi3s1/2 and pi2d3/2 configurations in 177Au(g), whilst 181Tl(g) remains a near-pure pi3s1/2. This conclusion is inferred from the g factor of 177Au(g) which has an intermediate value between those of pi3s1/2 and pi2d3/2 states. A similar mixed configuration is proposed for the Ipi=1/2+ ground state of 179Au. This mixing may provide evidence for triaxial shapes in the ground states in the these nuclei.",

keywords = "laser spectroscopy, ISOLDE, alpha decay",

author = "{James G.}, Cubiss and Barzakh, {A. E.} and Maxim Seliverstov and Andreyev, {Andrei N.} and B. Andel and Stanislav Antalic and Philippe Ascher and Dimitar Atanasov and D. Beck and Jacek Bieron and Klaus Blaum and Christopher Borgmann and Martin Breitenfeldt and L. Capponi and Cocolios, {Thomas Elias} and {Day Goodacre}, Thomas and Xavier Derkx and {De Witte}, Hilde and Jytte Elseviers and D.V. Fedorov and Fedosseev, {Valentin N.} and Stephan Fritzsche and Gaffney, {Liam Paul} and Lars Ghys and Hessberger, {Fritz Peter} and Mark Huyse and Nobuaki Imai and Z. Kalaninova and D. Kisler and Ulli Koester and Magdalena Kowalska and S. Kreim and Lane, {Joseph F.W.} and Valentina Liberati and David Lunney and Lynch, {Kara M} and Vladimir Manea and Marsh, {Bruce A} and S. Mitsuoka and P.L. Molkanov and Y. Nagame and Dennis Neidherr and K. Nishio and S. Ota and Dieter Pauwels and Lucia Popescu and Deyan Radulov and Elisa Rapisarda and Revill, {J. P.} and M. Rosenbusch and Rossel, {Ralf Erik} and Sebastian Rothe and Karanjeet Sandhu and Lutz Schweikhard and Simon Sels and V.L. Truesdale and {Van Beveren}, Celine and {Van den Bergh}, Paul and Y. Wakabayashi and {Van Duppen}, Piet and K.D.A. Wendt and Frank Wienholtz and Whitmore, {B. W.} and G.L. Wilson and R.N. Wolf and Kai Zuber",

note = "Score=10",

year = "2018",

month = oct,

day = "5",

doi = "10.1016/j.physletb.2018.10.005",

language = "English",

volume = "786",

pages = "355--363",

journal = "Physical Review C",

issn = "0556-2813",

publisher = "American Physical Society",

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James G., C, Barzakh, AE, Seliverstov, M, Andreyev, AN, Andel, B, Antalic, S, Ascher, P, Atanasov, D, Beck, D, Bieron, J, Blaum, K, Borgmann, C, Breitenfeldt, M, Capponi, L, Cocolios, TE, Day Goodacre, T, Derkx, X, De Witte, H, Elseviers, J, Fedorov, DV, Fedosseev, VN, Fritzsche, S, Gaffney, LP, Ghys, L, Hessberger, FP, Huyse, M, Imai, N, Kalaninova, Z, Kisler, D, Koester, U, Kowalska, M, Kreim, S, Lane, JFW, Liberati, V, Lunney, D, Lynch, KM, Manea, V, Marsh, BA, Mitsuoka, S, Molkanov, PL, Nagame, Y, Neidherr, D, Nishio, K, Ota, S, Pauwels, D, Popescu, L, Radulov, D, Rapisarda, E, Revill, JP, Rosenbusch, M, Rossel, RE, Rothe, S, Sandhu, K, Schweikhard, L, Sels, S, Truesdale, VL, Van Beveren, C, Van den Bergh, P, Wakabayashi, Y, Van Duppen, P, Wendt, KDA, Wienholtz, F, Whitmore, BW, Wilson, GL, Wolf, RN & Zuber, K 2018, 'Change in structure between the I=1/2 states in 181Tl and 177,179Au', Physical Review C, vol. 786, pp. 355-363. https://doi.org/10.1016/j.physletb.2018.10.005

TY - JOUR

T1 - Change in structure between the I=1/2 states in 181Tl and 177,179Au

AU - James G., Cubiss

AU - Barzakh, A. E.

AU - Seliverstov, Maxim

AU - Andreyev, Andrei N.

AU - Andel, B.

AU - Antalic, Stanislav

AU - Ascher, Philippe

AU - Atanasov, Dimitar

AU - Beck, D.

AU - Bieron, Jacek

AU - Blaum, Klaus

AU - Borgmann, Christopher

AU - Breitenfeldt, Martin

AU - Capponi, L.

AU - Cocolios, Thomas Elias

AU - Day Goodacre, Thomas

AU - Derkx, Xavier

AU - De Witte, Hilde

AU - Elseviers, Jytte

AU - Fedorov, D.V.

AU - Fedosseev, Valentin N.

AU - Fritzsche, Stephan

AU - Gaffney, Liam Paul

AU - Ghys, Lars

AU - Hessberger, Fritz Peter

AU - Huyse, Mark

AU - Imai, Nobuaki

AU - Kalaninova, Z.

AU - Kisler, D.

AU - Koester, Ulli

AU - Kowalska, Magdalena

AU - Kreim, S.

AU - Lane, Joseph F.W.

AU - Liberati, Valentina

AU - Lunney, David

AU - Lynch, Kara M

AU - Manea, Vladimir

AU - Marsh, Bruce A

AU - Mitsuoka, S.

AU - Molkanov, P.L.

AU - Nagame, Y.

AU - Neidherr, Dennis

AU - Nishio, K.

AU - Ota, S.

AU - Pauwels, Dieter

AU - Popescu, Lucia

AU - Radulov, Deyan

AU - Rapisarda, Elisa

AU - Revill, J. P.

AU - Rosenbusch, M.

AU - Rossel, Ralf Erik

AU - Rothe, Sebastian

AU - Sandhu, Karanjeet

AU - Schweikhard, Lutz

AU - Sels, Simon

AU - Truesdale, V.L.

AU - Van Beveren, Celine

AU - Van den Bergh, Paul

AU - Wakabayashi, Y.

AU - Van Duppen, Piet

AU - Wendt, K.D.A.

AU - Wienholtz, Frank

AU - Whitmore, B. W.

AU - Wilson, G.L.

AU - Wolf, R.N.

AU - Zuber, Kai

N1 - Score=10

PY - 2018/10/5

Y1 - 2018/10/5

N2 - The first accurate measurements of the alpha-decay branching ratio and half-life of the Ipi = 1/2+ ground state in 181Tl have been made, along with the first determination of the magnetic moments and I=1/2 spin assignments of the ground states in 177,179Au. The results are discussed within the complementary systematics of the reduced alpha-decay widths and nuclear g factors of low-lying, Ipi = 1/2+ states in the neutron-deficient lead region. The finding shed light on the unexpected hindrance of the 1/2+->1/2+, 181Tl(g) -> 177Au(g) alpha decay, which is explained by a mixing of pi3s1/2 and pi2d3/2 configurations in 177Au(g), whilst 181Tl(g) remains a near-pure pi3s1/2. This conclusion is inferred from the g factor of 177Au(g) which has an intermediate value between those of pi3s1/2 and pi2d3/2 states. A similar mixed configuration is proposed for the Ipi=1/2+ ground state of 179Au. This mixing may provide evidence for triaxial shapes in the ground states in the these nuclei.

AB - The first accurate measurements of the alpha-decay branching ratio and half-life of the Ipi = 1/2+ ground state in 181Tl have been made, along with the first determination of the magnetic moments and I=1/2 spin assignments of the ground states in 177,179Au. The results are discussed within the complementary systematics of the reduced alpha-decay widths and nuclear g factors of low-lying, Ipi = 1/2+ states in the neutron-deficient lead region. The finding shed light on the unexpected hindrance of the 1/2+->1/2+, 181Tl(g) -> 177Au(g) alpha decay, which is explained by a mixing of pi3s1/2 and pi2d3/2 configurations in 177Au(g), whilst 181Tl(g) remains a near-pure pi3s1/2. This conclusion is inferred from the g factor of 177Au(g) which has an intermediate value between those of pi3s1/2 and pi2d3/2 states. A similar mixed configuration is proposed for the Ipi=1/2+ ground state of 179Au. This mixing may provide evidence for triaxial shapes in the ground states in the these nuclei.

KW - laser spectroscopy

KW - ISOLDE

KW - alpha decay

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/31017356

U2 - 10.1016/j.physletb.2018.10.005

DO - 10.1016/j.physletb.2018.10.005

M3 - Article

SN - 0556-2813

VL - 786

SP - 355

EP - 363

JO - Physical Review C

JF - Physical Review C

ER -