Relative quadrupole moments of exotic shapes at ultrahigh spin in 154Er: Calibrating the TSD/SD puzzle

J. P. Revill; E. S. Paul; X. Wang; M. A. Riley; J. Simpson; J. Ollier; A. J. Boston; M. P. Carpenter; C. J. Chiara; C. Hoffman; R. V.F. Janssens; F. G. Kondev; T. Lauritsen; P. J. Nolan; J. M. Rees; S. V. Rigby; C. Unsworth; S. Zhu; I. Ragnarsson

doi:10.1088/1742-6596/381/1/012066

Relative quadrupole moments of exotic shapes at ultrahigh spin in ¹⁵⁴Er: Calibrating the TSD/SD puzzle

J. P. Revill, E. S. Paul, X. Wang, M. A. Riley, J. Simpson, J. Ollier, A. J. Boston, M. P. Carpenter, C. J. Chiara, C. Hoffman, R. V.F. Janssens, F. G. Kondev, T. Lauritsen, P. J. Nolan, J. M. Rees, S. V. Rigby, C. Unsworth, S. Zhu, I. Ragnarsson

Research output: Contribution to conference › Paper, not in proceeding › peer-review

Abstract

Transition quadrupole moments, Q_t, of two ultrahigh-spin, collective structures in ¹⁵⁴Er have been measured for the first time using the Doppler Shift Attenuation Method (DSAM). Data were acquired at the ATLAS accelerator facility of Argonne National Laboratory, using the Gammasphere detector array. A thick, gold-backed ¹¹⁰Pd foil was bombarded by a beam of ⁴⁸Ti ions at 215 MeV. The Q_t for each band was determined from the Doppler shift of gamma rays emitted by the resulting recoil nuclei. The extracted transition quadrupole moments are significantly different in magnitude, suggesting the two structures in ¹⁵⁴Er represent distinct exotic nuclear shapes, namely axial superdeformed (SD) with Q _t 20 eb, and triaxial strongly deformed (TSD) with Q_t ≈ 11 eb. Indeed, the results calibrate the quadrupole moments of TSD bands recently measured in light erbium nuclei, ^157,158Er.

Original language	English
DOIs	https://doi.org/10.1088/1742-6596/381/1/012066
Publication status	Published - 2012
Event	Rutherford Centennial Conference on Nuclear Physics - Manchester, England, Manchester, United Kingdom Duration: 2011 Aug 8 → 2011 Aug 12

Conference

Conference	Rutherford Centennial Conference on Nuclear Physics
Country/Territory	United Kingdom
City	Manchester
Period	2011/08/08 → 2011/08/12

Subject classification (UKÄ)

Subatomic Physics

Access to Document

10.1088/1742-6596/381/1/012066

Cite this

Revill, J. P., Paul, E. S., Wang, X., Riley, M. A., Simpson, J., Ollier, J., Boston, A. J., Carpenter, M. P., Chiara, C. J., Hoffman, C., Janssens, R. V. F., Kondev, F. G., Lauritsen, T., Nolan, P. J., Rees, J. M., Rigby, S. V., Unsworth, C., Zhu, S., & Ragnarsson, I. (2012). Relative quadrupole moments of exotic shapes at ultrahigh spin in ¹⁵⁴Er: Calibrating the TSD/SD puzzle. Paper presented at Rutherford Centennial Conference on Nuclear Physics, Manchester, United Kingdom. https://doi.org/10.1088/1742-6596/381/1/012066

@conference{bb0163105b564c8692c15e16a1423f41,

title = "Relative quadrupole moments of exotic shapes at ultrahigh spin in 154Er: Calibrating the TSD/SD puzzle",

abstract = "Transition quadrupole moments, Qt, of two ultrahigh-spin, collective structures in 154Er have been measured for the first time using the Doppler Shift Attenuation Method (DSAM). Data were acquired at the ATLAS accelerator facility of Argonne National Laboratory, using the Gammasphere detector array. A thick, gold-backed 110Pd foil was bombarded by a beam of 48Ti ions at 215 MeV. The Qt for each band was determined from the Doppler shift of gamma rays emitted by the resulting recoil nuclei. The extracted transition quadrupole moments are significantly different in magnitude, suggesting the two structures in 154Er represent distinct exotic nuclear shapes, namely axial superdeformed (SD) with Q t 20 eb, and triaxial strongly deformed (TSD) with Qt ≈ 11 eb. Indeed, the results calibrate the quadrupole moments of TSD bands recently measured in light erbium nuclei, 157,158Er.",

author = "Revill, {J. P.} and Paul, {E. S.} and X. Wang and Riley, {M. A.} and J. Simpson and J. Ollier and Boston, {A. J.} and Carpenter, {M. P.} and Chiara, {C. J.} and C. Hoffman and Janssens, {R. V.F.} and Kondev, {F. G.} and T. Lauritsen and Nolan, {P. J.} and Rees, {J. M.} and Rigby, {S. V.} and C. Unsworth and S. Zhu and I. Ragnarsson",

year = "2012",

doi = "10.1088/1742-6596/381/1/012066",

language = "English",

note = "Rutherford Centennial Conference on Nuclear Physics ; Conference date: 08-08-2011 Through 12-08-2011",

}

Revill, JP, Paul, ES, Wang, X, Riley, MA, Simpson, J, Ollier, J, Boston, AJ, Carpenter, MP, Chiara, CJ, Hoffman, C, Janssens, RVF, Kondev, FG, Lauritsen, T, Nolan, PJ, Rees, JM, Rigby, SV, Unsworth, C, Zhu, S & Ragnarsson, I 2012, 'Relative quadrupole moments of exotic shapes at ultrahigh spin in ¹⁵⁴Er: Calibrating the TSD/SD puzzle', Paper presented at Rutherford Centennial Conference on Nuclear Physics, Manchester, United Kingdom, 2011/08/08 - 2011/08/12. https://doi.org/10.1088/1742-6596/381/1/012066

TY - CONF

T1 - Relative quadrupole moments of exotic shapes at ultrahigh spin in 154Er

T2 - Rutherford Centennial Conference on Nuclear Physics

AU - Revill, J. P.

AU - Paul, E. S.

AU - Wang, X.

AU - Riley, M. A.

AU - Simpson, J.

AU - Ollier, J.

AU - Boston, A. J.

AU - Carpenter, M. P.

AU - Chiara, C. J.

AU - Hoffman, C.

AU - Janssens, R. V.F.

AU - Kondev, F. G.

AU - Lauritsen, T.

AU - Nolan, P. J.

AU - Rees, J. M.

AU - Rigby, S. V.

AU - Unsworth, C.

AU - Zhu, S.

AU - Ragnarsson, I.

PY - 2012

Y1 - 2012

N2 - Transition quadrupole moments, Qt, of two ultrahigh-spin, collective structures in 154Er have been measured for the first time using the Doppler Shift Attenuation Method (DSAM). Data were acquired at the ATLAS accelerator facility of Argonne National Laboratory, using the Gammasphere detector array. A thick, gold-backed 110Pd foil was bombarded by a beam of 48Ti ions at 215 MeV. The Qt for each band was determined from the Doppler shift of gamma rays emitted by the resulting recoil nuclei. The extracted transition quadrupole moments are significantly different in magnitude, suggesting the two structures in 154Er represent distinct exotic nuclear shapes, namely axial superdeformed (SD) with Q t 20 eb, and triaxial strongly deformed (TSD) with Qt ≈ 11 eb. Indeed, the results calibrate the quadrupole moments of TSD bands recently measured in light erbium nuclei, 157,158Er.

AB - Transition quadrupole moments, Qt, of two ultrahigh-spin, collective structures in 154Er have been measured for the first time using the Doppler Shift Attenuation Method (DSAM). Data were acquired at the ATLAS accelerator facility of Argonne National Laboratory, using the Gammasphere detector array. A thick, gold-backed 110Pd foil was bombarded by a beam of 48Ti ions at 215 MeV. The Qt for each band was determined from the Doppler shift of gamma rays emitted by the resulting recoil nuclei. The extracted transition quadrupole moments are significantly different in magnitude, suggesting the two structures in 154Er represent distinct exotic nuclear shapes, namely axial superdeformed (SD) with Q t 20 eb, and triaxial strongly deformed (TSD) with Qt ≈ 11 eb. Indeed, the results calibrate the quadrupole moments of TSD bands recently measured in light erbium nuclei, 157,158Er.

U2 - 10.1088/1742-6596/381/1/012066

DO - 10.1088/1742-6596/381/1/012066

M3 - Paper, not in proceeding

AN - SCOPUS:84867942609

Y2 - 8 August 2011 through 12 August 2011

ER -