Investigation of negative-parity states in Dy 156: Search for evidence of tetrahedral symmetry

D. J. Hartley; L. L. Riedinger; R. V.F. Janssens; S. N.T. Majola; M. A. Riley; J. M. Allmond; C. W. Beausang; M. P. Carpenter; C. J. Chiara; N. Cooper; D. Curien; B. J.P. Gall; P. E. Garrett; F. G. Kondev; W. D. Kulp; T. Lauritsen; E. A. McCutchan; D. Miller; S. Miller; J. Piot; N. Redon; J. F. Sharpey-Schafer; J. Simpson; I. Stefanescu; X. Wang; V. Werner; J. L. Wood; C. H. Yu; S. Zhu; J. Dudek

doi:10.1103/PhysRevC.95.014321

Investigation of negative-parity states in Dy 156: Search for evidence of tetrahedral symmetry

D. J. Hartley, L. L. Riedinger, R. V.F. Janssens, S. N.T. Majola, M. A. Riley, J. M. Allmond, C. W. Beausang, M. P. Carpenter, C. J. Chiara, N. Cooper, D. Curien, B. J.P. Gall, P. E. Garrett, F. G. Kondev, W. D. Kulp, T. Lauritsen, E. A. McCutchan, D. Miller, S. Miller, J. PiotN. Redon, J. F. Sharpey-Schafer, J. Simpson, I. Stefanescu, X. Wang, V. Werner, J. L. Wood, C. H. Yu, S. Zhu, J. Dudek

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Abstract

An experiment populating low/medium-spin states in Dy156 was performed to investigate the possibility of tetrahedral symmetry in this nucleus. In particular, focus was placed on the low-spin, negative-parity states since recent theoretical studies suggest that these may be good candidates for this high-rank symmetry. The states were produced in the Nd148(C12,4n) reaction and the Gammasphere array was utilized to detect the emitted γ rays. B(E2)/B(E1) ratios of transition probabilities from the low-spin, negative-parity bands were determined and used to interpret whether these structures are best associated with tetrahedral symmetry or, as previously assigned, to octupole vibrations. In addition, several other negative-parity structures were observed to higher spin and two new sequences were established.

Original language	English
Article number	014321
Journal	Physical Review C
Volume	95
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevC.95.014321
Publication status	Published - 20 Jan 2017
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1103/PhysRevC.95.014321

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Hartley, D. J., Riedinger, L. L., Janssens, R. V. F., Majola, S. N. T., Riley, M. A., Allmond, J. M., Beausang, C. W., Carpenter, M. P., Chiara, C. J., Cooper, N., Curien, D., Gall, B. J. P., Garrett, P. E., Kondev, F. G., Kulp, W. D., Lauritsen, T., McCutchan, E. A., Miller, D., Miller, S., ... Dudek, J. (2017). Investigation of negative-parity states in Dy 156: Search for evidence of tetrahedral symmetry. Physical Review C, 95(1), Article 014321. https://doi.org/10.1103/PhysRevC.95.014321

@article{57fe5b9353f84670ad154e910be6485f,

title = "Investigation of negative-parity states in Dy 156: Search for evidence of tetrahedral symmetry",

abstract = "An experiment populating low/medium-spin states in Dy156 was performed to investigate the possibility of tetrahedral symmetry in this nucleus. In particular, focus was placed on the low-spin, negative-parity states since recent theoretical studies suggest that these may be good candidates for this high-rank symmetry. The states were produced in the Nd148(C12,4n) reaction and the Gammasphere array was utilized to detect the emitted γ rays. B(E2)/B(E1) ratios of transition probabilities from the low-spin, negative-parity bands were determined and used to interpret whether these structures are best associated with tetrahedral symmetry or, as previously assigned, to octupole vibrations. In addition, several other negative-parity structures were observed to higher spin and two new sequences were established.",

author = "Hartley, {D. J.} and Riedinger, {L. L.} and Janssens, {R. V.F.} and Majola, {S. N.T.} and Riley, {M. A.} and Allmond, {J. M.} and Beausang, {C. W.} and Carpenter, {M. P.} and Chiara, {C. J.} and N. Cooper and D. Curien and Gall, {B. J.P.} and Garrett, {P. E.} and Kondev, {F. G.} and Kulp, {W. D.} and T. Lauritsen and McCutchan, {E. A.} and D. Miller and S. Miller and J. Piot and N. Redon and Sharpey-Schafer, {J. F.} and J. Simpson and I. Stefanescu and X. Wang and V. Werner and Wood, {J. L.} and Yu, {C. H.} and S. Zhu and J. Dudek",

note = "Publisher Copyright: {\textcopyright} 2017 American Physical Society.",

year = "2017",

month = jan,

day = "20",

doi = "10.1103/PhysRevC.95.014321",

language = "English",

volume = "95",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

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Hartley, DJ, Riedinger, LL, Janssens, RVF, Majola, SNT, Riley, MA, Allmond, JM, Beausang, CW, Carpenter, MP, Chiara, CJ, Cooper, N, Curien, D, Gall, BJP, Garrett, PE, Kondev, FG, Kulp, WD, Lauritsen, T, McCutchan, EA, Miller, D, Miller, S, Piot, J, Redon, N, Sharpey-Schafer, JF, Simpson, J, Stefanescu, I, Wang, X, Werner, V, Wood, JL, Yu, CH, Zhu, S & Dudek, J 2017, 'Investigation of negative-parity states in Dy 156: Search for evidence of tetrahedral symmetry', Physical Review C, vol. 95, no. 1, 014321. https://doi.org/10.1103/PhysRevC.95.014321

TY - JOUR

T1 - Investigation of negative-parity states in Dy 156

T2 - Search for evidence of tetrahedral symmetry

AU - Hartley, D. J.

AU - Riedinger, L. L.

AU - Janssens, R. V.F.

AU - Majola, S. N.T.

AU - Riley, M. A.

AU - Allmond, J. M.

AU - Beausang, C. W.

AU - Carpenter, M. P.

AU - Chiara, C. J.

AU - Cooper, N.

AU - Curien, D.

AU - Gall, B. J.P.

AU - Garrett, P. E.

AU - Kondev, F. G.

AU - Kulp, W. D.

AU - Lauritsen, T.

AU - McCutchan, E. A.

AU - Miller, D.

AU - Miller, S.

AU - Piot, J.

AU - Redon, N.

AU - Sharpey-Schafer, J. F.

AU - Simpson, J.

AU - Stefanescu, I.

AU - Wang, X.

AU - Werner, V.

AU - Wood, J. L.

AU - Yu, C. H.

AU - Zhu, S.

AU - Dudek, J.

PY - 2017/1/20

Y1 - 2017/1/20

N2 - An experiment populating low/medium-spin states in Dy156 was performed to investigate the possibility of tetrahedral symmetry in this nucleus. In particular, focus was placed on the low-spin, negative-parity states since recent theoretical studies suggest that these may be good candidates for this high-rank symmetry. The states were produced in the Nd148(C12,4n) reaction and the Gammasphere array was utilized to detect the emitted γ rays. B(E2)/B(E1) ratios of transition probabilities from the low-spin, negative-parity bands were determined and used to interpret whether these structures are best associated with tetrahedral symmetry or, as previously assigned, to octupole vibrations. In addition, several other negative-parity structures were observed to higher spin and two new sequences were established.

AB - An experiment populating low/medium-spin states in Dy156 was performed to investigate the possibility of tetrahedral symmetry in this nucleus. In particular, focus was placed on the low-spin, negative-parity states since recent theoretical studies suggest that these may be good candidates for this high-rank symmetry. The states were produced in the Nd148(C12,4n) reaction and the Gammasphere array was utilized to detect the emitted γ rays. B(E2)/B(E1) ratios of transition probabilities from the low-spin, negative-parity bands were determined and used to interpret whether these structures are best associated with tetrahedral symmetry or, as previously assigned, to octupole vibrations. In addition, several other negative-parity structures were observed to higher spin and two new sequences were established.

UR - http://www.scopus.com/inward/record.url?scp=85009999527&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.95.014321

DO - 10.1103/PhysRevC.95.014321

M3 - Article

AN - SCOPUS:85009999527

SN - 2469-9985

VL - 95

JO - Physical Review C

JF - Physical Review C

IS - 1

M1 - 014321

ER -

Investigation of negative-parity states in Dy 156: Search for evidence of tetrahedral symmetry

Abstract

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