Mapping quadrupole collectivity in the Cd isotopes: The breakdown of harmonic vibrational motion

P. E. Garrett; K. L. Green; J. Bangay; A. Diaz Varela; C. S. Sumithrarachchi; R. A.E. Austin; G. C. Ball; D. S. Bandyopadhyay; L. Bianco; S. Colosimo; D. S. Cross; G. A. Demand; P. Finlay; A. B. Garnsworthy; G. F. Grinyer; G. Hackman; W. D. Kulp; K. G. Leach; A. C. Morton; J. N. Orce; C. J. Pearson; A. A. Phillips; M. A. Schumaker; C. E. Svensson; S. Triambak; J. Wong; J. L. Wood; S. W. Yates

doi:10.1063/1.3628381

Mapping quadrupole collectivity in the Cd isotopes: The breakdown of harmonic vibrational motion

P. E. Garrett, K. L. Green, J. Bangay, A. Diaz Varela, C. S. Sumithrarachchi, R. A.E. Austin, G. C. Ball, D. S. Bandyopadhyay, L. Bianco, S. Colosimo, D. S. Cross, G. A. Demand, P. Finlay, A. B. Garnsworthy, G. F. Grinyer, G. Hackman, W. D. Kulp, K. G. Leach, A. C. Morton, J. N. OrceC. J. Pearson, A. A. Phillips, M. A. Schumaker, C. E. Svensson, S. Triambak, J. Wong, J. L. Wood, S. W. Yates

Chemistry

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Scopus citations

Abstract

The stable Cd isotopes have long been used as paradigms for spherical vibrational motion. Extensive investigations with in-beam γ spectroscopy have resulted in very-well-established level schemes, including many lifetimes or lifetime limits. A programme has been initiated to complement these studies with very-high-statistics β decay using the 8π spectrometer at the TRIUMF radioactive beam facility. The decays of ¹¹²In and ¹¹²Ag have been studied with an emphasis on the observation of, or the placement of stringent limits on, low-energy branches between potential multi-phonon levels. A lack of suitable 0⁺ or 2⁺ three-phonon candidates has been revealed. Further, the sum of the B(E2) strength from spin 0⁺ and 2⁺ states up to 3 MeV in excitation energy to the assigned two-phonon levels falls far short of the harmonic-vibrational expectations. This lack of strength points to the failing of collective models based on vibrational phonon structures.

Original language	English
Title of host publication	Frontiers in Nuclear Structure, Astrophysics, and Reactions, FINUSTAR 3
Pages	211-215
Number of pages	5
DOIs	https://doi.org/10.1063/1.3628381
State	Published - 2011
Event	3rd International Conference on Frontiers in Nuclear Structure, Astrophysics, and Reactions, FINUSTAR 3 - Rhodes, Greece Duration: Aug 23 2010 → Aug 27 2010

Publication series

Name	AIP Conference Proceedings
Volume	1377
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	3rd International Conference on Frontiers in Nuclear Structure, Astrophysics, and Reactions, FINUSTAR 3
Country/Territory	Greece
City	Rhodes
Period	8/23/10 → 8/27/10

ASJC Scopus subject areas

General Physics and Astronomy

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10.1063/1.3628381

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Garrett, P. E., Green, K. L., Bangay, J., Varela, A. D., Sumithrarachchi, C. S., Austin, R. A. E., Ball, G. C., Bandyopadhyay, D. S., Bianco, L., Colosimo, S., Cross, D. S., Demand, G. A., Finlay, P., Garnsworthy, A. B., Grinyer, G. F., Hackman, G., Kulp, W. D., Leach, K. G., Morton, A. C., ... Yates, S. W. (2011). Mapping quadrupole collectivity in the Cd isotopes: The breakdown of harmonic vibrational motion. In Frontiers in Nuclear Structure, Astrophysics, and Reactions, FINUSTAR 3 (pp. 211-215). (AIP Conference Proceedings; Vol. 1377). https://doi.org/10.1063/1.3628381

@inproceedings{a3f9fc1853644fd9a126865c77bf8d49,

title = "Mapping quadrupole collectivity in the Cd isotopes: The breakdown of harmonic vibrational motion",

abstract = "The stable Cd isotopes have long been used as paradigms for spherical vibrational motion. Extensive investigations with in-beam γ spectroscopy have resulted in very-well-established level schemes, including many lifetimes or lifetime limits. A programme has been initiated to complement these studies with very-high-statistics β decay using the 8π spectrometer at the TRIUMF radioactive beam facility. The decays of 112In and 112Ag have been studied with an emphasis on the observation of, or the placement of stringent limits on, low-energy branches between potential multi-phonon levels. A lack of suitable 0+ or 2+ three-phonon candidates has been revealed. Further, the sum of the B(E2) strength from spin 0+ and 2+ states up to 3 MeV in excitation energy to the assigned two-phonon levels falls far short of the harmonic-vibrational expectations. This lack of strength points to the failing of collective models based on vibrational phonon structures.",

author = "Garrett, {P. E.} and Green, {K. L.} and J. Bangay and Varela, {A. Diaz} and Sumithrarachchi, {C. S.} and Austin, {R. A.E.} and Ball, {G. C.} and Bandyopadhyay, {D. S.} and L. Bianco and S. Colosimo and Cross, {D. S.} and Demand, {G. A.} and P. Finlay and Garnsworthy, {A. B.} and Grinyer, {G. F.} and G. Hackman and Kulp, {W. D.} and Leach, {K. G.} and Morton, {A. C.} and Orce, {J. N.} and Pearson, {C. J.} and Phillips, {A. A.} and Schumaker, {M. A.} and Svensson, {C. E.} and S. Triambak and J. Wong and Wood, {J. L.} and Yates, {S. W.}",

year = "2011",

doi = "10.1063/1.3628381",

language = "English",

isbn = "9780735409378",

series = "AIP Conference Proceedings",

pages = "211--215",

booktitle = "Frontiers in Nuclear Structure, Astrophysics, and Reactions, FINUSTAR 3",

note = "3rd International Conference on Frontiers in Nuclear Structure, Astrophysics, and Reactions, FINUSTAR 3 ; Conference date: 23-08-2010 Through 27-08-2010",

}

Garrett, PE, Green, KL, Bangay, J, Varela, AD, Sumithrarachchi, CS, Austin, RAE, Ball, GC, Bandyopadhyay, DS, Bianco, L, Colosimo, S, Cross, DS, Demand, GA, Finlay, P, Garnsworthy, AB, Grinyer, GF, Hackman, G, Kulp, WD, Leach, KG, Morton, AC, Orce, JN, Pearson, CJ, Phillips, AA, Schumaker, MA, Svensson, CE, Triambak, S, Wong, J, Wood, JL & Yates, SW 2011, Mapping quadrupole collectivity in the Cd isotopes: The breakdown of harmonic vibrational motion. in Frontiers in Nuclear Structure, Astrophysics, and Reactions, FINUSTAR 3. AIP Conference Proceedings, vol. 1377, pp. 211-215, 3rd International Conference on Frontiers in Nuclear Structure, Astrophysics, and Reactions, FINUSTAR 3, Rhodes, Greece, 8/23/10. https://doi.org/10.1063/1.3628381

Mapping quadrupole collectivity in the Cd isotopes: The breakdown of harmonic vibrational motion. / Garrett, P. E.; Green, K. L.; Bangay, J. et al.
Frontiers in Nuclear Structure, Astrophysics, and Reactions, FINUSTAR 3. 2011. p. 211-215 (AIP Conference Proceedings; Vol. 1377).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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T1 - Mapping quadrupole collectivity in the Cd isotopes

T2 - 3rd International Conference on Frontiers in Nuclear Structure, Astrophysics, and Reactions, FINUSTAR 3

AU - Garrett, P. E.

AU - Green, K. L.

AU - Bangay, J.

AU - Varela, A. Diaz

AU - Sumithrarachchi, C. S.

AU - Austin, R. A.E.

AU - Ball, G. C.

AU - Bandyopadhyay, D. S.

AU - Bianco, L.

AU - Colosimo, S.

AU - Cross, D. S.

AU - Demand, G. A.

AU - Finlay, P.

AU - Garnsworthy, A. B.

AU - Grinyer, G. F.

AU - Hackman, G.

AU - Kulp, W. D.

AU - Leach, K. G.

AU - Morton, A. C.

AU - Orce, J. N.

AU - Pearson, C. J.

AU - Phillips, A. A.

AU - Schumaker, M. A.

AU - Svensson, C. E.

AU - Triambak, S.

AU - Wong, J.

AU - Wood, J. L.

AU - Yates, S. W.

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N2 - The stable Cd isotopes have long been used as paradigms for spherical vibrational motion. Extensive investigations with in-beam γ spectroscopy have resulted in very-well-established level schemes, including many lifetimes or lifetime limits. A programme has been initiated to complement these studies with very-high-statistics β decay using the 8π spectrometer at the TRIUMF radioactive beam facility. The decays of 112In and 112Ag have been studied with an emphasis on the observation of, or the placement of stringent limits on, low-energy branches between potential multi-phonon levels. A lack of suitable 0+ or 2+ three-phonon candidates has been revealed. Further, the sum of the B(E2) strength from spin 0+ and 2+ states up to 3 MeV in excitation energy to the assigned two-phonon levels falls far short of the harmonic-vibrational expectations. This lack of strength points to the failing of collective models based on vibrational phonon structures.

AB - The stable Cd isotopes have long been used as paradigms for spherical vibrational motion. Extensive investigations with in-beam γ spectroscopy have resulted in very-well-established level schemes, including many lifetimes or lifetime limits. A programme has been initiated to complement these studies with very-high-statistics β decay using the 8π spectrometer at the TRIUMF radioactive beam facility. The decays of 112In and 112Ag have been studied with an emphasis on the observation of, or the placement of stringent limits on, low-energy branches between potential multi-phonon levels. A lack of suitable 0+ or 2+ three-phonon candidates has been revealed. Further, the sum of the B(E2) strength from spin 0+ and 2+ states up to 3 MeV in excitation energy to the assigned two-phonon levels falls far short of the harmonic-vibrational expectations. This lack of strength points to the failing of collective models based on vibrational phonon structures.

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BT - Frontiers in Nuclear Structure, Astrophysics, and Reactions, FINUSTAR 3

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ER -

Mapping quadrupole collectivity in the Cd isotopes: The breakdown of harmonic vibrational motion

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