Shape coexistence in odd-mass Au isotopes:  determination of the excitation energy of the lowest intruder state in Au-179

M. Venhart; A. N. Andreyev; J. L. Wood; S. Antalic; L. Bianco; P. T. Greenlees; U. Jakobsson; P. Jones; R. Julin; S. Juutinen; S. Ketelhut; M. Leino; M. Nyman; R. D. Page; P. Peura; P. Rahkila; J. Saren; C. Scholey; J. Sorri; J. Thomson; J. Uusitalo

doi:10.1016/j.physletb.2010.10.055

Shape coexistence in odd-mass Au isotopes: determination of the excitation energy of the lowest intruder state in Au-179

M. Venhart^*, A. N. Andreyev, J. L. Wood, S. Antalic, L. Bianco, P. T. Greenlees, U. Jakobsson, P. Jones, R. Julin, S. Juutinen, S. Ketelhut, M. Leino, M. Nyman, R. D. Page, P. Peura, P. Rahkila, J. Saren, C. Scholey, J. Sorri, J. ThomsonJ. Uusitalo

^*Corresponding author for this work

Physics

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

Abstract

Phenomenon of the shape coexistence has been investigated in Au-179(79)100. This very neutron-deficient isotope. 18 neutrons away from the stable gold isotope Au-197(79)118, was studied by a combination of adecay and isomer-decay spectroscopy employing the RITU gas-filled separator and the GREAT focal-plane spectrometer at the University of Jyvaskyla. A new isomer with t(1/2) = 328(2) ns was observed and states associated with pi d(3/2)(-1), pi(s-1)(1/2), pi integral(+1)(7/2) and pi h(9/2)(+1) structures were revealed. The implications of these results on the systematics of pi h(9/2)(+1) and pi integral(+1)(7/2) intruder structures in the odd-mass gold isotopes are discussed. The minimum of the parabolic trend is at N = 104, i.e. exactly at the mid-shell point and the pi integral(+1)(7/2) structure is dropping in energy relative to the pi h(9/2)(+1) with decreasing mass number. (C) 2010 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	82-87
Number of pages	6
Journal	Physics Letters B
Volume	695
Issue number	1-4
DOIs	https://doi.org/10.1016/j.physletb.2010.10.055
Publication status	Published - 10 Jan 2011

Keywords

pi h(9/2)(+1) and pi integral(+1)(7/2) intruder structures around
ALPHA-DECAY
ALIGNMENT
N=104
LIGHT
GREAT SPECTROMETER
Isomer in Au-179
TOTAL DATA READOUT
LINE
TRANSITIONS
NUCLEI
GOLD ISOTOPES

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10.1016/j.physletb.2010.10.055

http://www.sciencedirect.com/science/article/pii/S0370269310012669

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Venhart, M., Andreyev, A. N., Wood, J. L., Antalic, S., Bianco, L., Greenlees, P. T., Jakobsson, U., Jones, P., Julin, R., Juutinen, S., Ketelhut, S., Leino, M., Nyman, M., Page, R. D., Peura, P., Rahkila, P., Saren, J., Scholey, C., Sorri, J., ... Uusitalo, J. (2011). Shape coexistence in odd-mass Au isotopes: determination of the excitation energy of the lowest intruder state in Au-179. Physics Letters B, 695(1-4), 82-87. https://doi.org/10.1016/j.physletb.2010.10.055

@article{40798381cc264e3f995fd369d7690cc3,

title = "Shape coexistence in odd-mass Au isotopes: determination of the excitation energy of the lowest intruder state in Au-179",

abstract = "Phenomenon of the shape coexistence has been investigated in Au-179(79)100. This very neutron-deficient isotope. 18 neutrons away from the stable gold isotope Au-197(79)118, was studied by a combination of adecay and isomer-decay spectroscopy employing the RITU gas-filled separator and the GREAT focal-plane spectrometer at the University of Jyvaskyla. A new isomer with t(1/2) = 328(2) ns was observed and states associated with pi d(3/2)(-1), pi(s-1)(1/2), pi integral(+1)(7/2) and pi h(9/2)(+1) structures were revealed. The implications of these results on the systematics of pi h(9/2)(+1) and pi integral(+1)(7/2) intruder structures in the odd-mass gold isotopes are discussed. The minimum of the parabolic trend is at N = 104, i.e. exactly at the mid-shell point and the pi integral(+1)(7/2) structure is dropping in energy relative to the pi h(9/2)(+1) with decreasing mass number. (C) 2010 Elsevier B.V. All rights reserved.",

keywords = "pi h(9/2)(+1) and pi integral(+1)(7/2) intruder structures around, ALPHA-DECAY, ALIGNMENT, N=104, LIGHT, GREAT SPECTROMETER, Isomer in Au-179, TOTAL DATA READOUT, LINE, TRANSITIONS, NUCLEI, GOLD ISOTOPES",

author = "M. Venhart and Andreyev, {A. N.} and Wood, {J. L.} and S. Antalic and L. Bianco and Greenlees, {P. T.} and U. Jakobsson and P. Jones and R. Julin and S. Juutinen and S. Ketelhut and M. Leino and M. Nyman and Page, {R. D.} and P. Peura and P. Rahkila and J. Saren and C. Scholey and J. Sorri and J. Thomson and J. Uusitalo",

year = "2011",

month = jan,

day = "10",

doi = "10.1016/j.physletb.2010.10.055",

language = "English",

volume = "695",

pages = "82--87",

journal = "Physics Letters B",

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Venhart, M, Andreyev, AN, Wood, JL, Antalic, S, Bianco, L, Greenlees, PT, Jakobsson, U, Jones, P, Julin, R, Juutinen, S, Ketelhut, S, Leino, M, Nyman, M, Page, RD, Peura, P, Rahkila, P, Saren, J, Scholey, C, Sorri, J, Thomson, J & Uusitalo, J 2011, 'Shape coexistence in odd-mass Au isotopes: determination of the excitation energy of the lowest intruder state in Au-179', Physics Letters B, vol. 695, no. 1-4, pp. 82-87. https://doi.org/10.1016/j.physletb.2010.10.055

TY - JOUR

T1 - Shape coexistence in odd-mass Au isotopes

T2 - determination of the excitation energy of the lowest intruder state in Au-179

AU - Venhart, M.

AU - Andreyev, A. N.

AU - Wood, J. L.

AU - Antalic, S.

AU - Bianco, L.

AU - Greenlees, P. T.

AU - Jakobsson, U.

AU - Jones, P.

AU - Julin, R.

AU - Juutinen, S.

AU - Ketelhut, S.

AU - Leino, M.

AU - Nyman, M.

AU - Page, R. D.

AU - Peura, P.

AU - Rahkila, P.

AU - Saren, J.

AU - Scholey, C.

AU - Sorri, J.

AU - Thomson, J.

AU - Uusitalo, J.

PY - 2011/1/10

Y1 - 2011/1/10

N2 - Phenomenon of the shape coexistence has been investigated in Au-179(79)100. This very neutron-deficient isotope. 18 neutrons away from the stable gold isotope Au-197(79)118, was studied by a combination of adecay and isomer-decay spectroscopy employing the RITU gas-filled separator and the GREAT focal-plane spectrometer at the University of Jyvaskyla. A new isomer with t(1/2) = 328(2) ns was observed and states associated with pi d(3/2)(-1), pi(s-1)(1/2), pi integral(+1)(7/2) and pi h(9/2)(+1) structures were revealed. The implications of these results on the systematics of pi h(9/2)(+1) and pi integral(+1)(7/2) intruder structures in the odd-mass gold isotopes are discussed. The minimum of the parabolic trend is at N = 104, i.e. exactly at the mid-shell point and the pi integral(+1)(7/2) structure is dropping in energy relative to the pi h(9/2)(+1) with decreasing mass number. (C) 2010 Elsevier B.V. All rights reserved.

AB - Phenomenon of the shape coexistence has been investigated in Au-179(79)100. This very neutron-deficient isotope. 18 neutrons away from the stable gold isotope Au-197(79)118, was studied by a combination of adecay and isomer-decay spectroscopy employing the RITU gas-filled separator and the GREAT focal-plane spectrometer at the University of Jyvaskyla. A new isomer with t(1/2) = 328(2) ns was observed and states associated with pi d(3/2)(-1), pi(s-1)(1/2), pi integral(+1)(7/2) and pi h(9/2)(+1) structures were revealed. The implications of these results on the systematics of pi h(9/2)(+1) and pi integral(+1)(7/2) intruder structures in the odd-mass gold isotopes are discussed. The minimum of the parabolic trend is at N = 104, i.e. exactly at the mid-shell point and the pi integral(+1)(7/2) structure is dropping in energy relative to the pi h(9/2)(+1) with decreasing mass number. (C) 2010 Elsevier B.V. All rights reserved.

KW - pi h(9/2)(+1) and pi integral(+1)(7/2) intruder structures around

KW - ALPHA-DECAY

KW - ALIGNMENT

KW - N=104

KW - LIGHT

KW - GREAT SPECTROMETER

KW - Isomer in Au-179

KW - TOTAL DATA READOUT

KW - LINE

KW - TRANSITIONS

KW - NUCLEI

KW - GOLD ISOTOPES

UR - http://www.scopus.com/inward/record.url?scp=78650311077&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2010.10.055

DO - 10.1016/j.physletb.2010.10.055

M3 - Article

SN - 0370-2693

VL - 695

SP - 82

EP - 87

JO - Physics Letters B

JF - Physics Letters B

IS - 1-4

ER -

Shape coexistence in odd-mass Au isotopes: determination of the excitation energy of the lowest intruder state in Au-179

Abstract

Keywords

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