Wobbling phonon excitations, coexisting with normal deformed structures in 163Lu

D.R. Jensen; G.B. Hagemann; I. Hamamoto; S.W. Ødegård; M. Bergström; B. Herskind; G. Sletten; S. Tormänen; J.N. Wilson; P.O. Tjom; K. Spohr; H. Hübel; A. Görgen; G. Schönwasser; A. Bracco; S. Leoni; A. Maj; C.M. Petrache; P. Bednarczyk; D. Curien

doi:10.1016/S0375-9474(01)01459-2

Wobbling phonon excitations, coexisting with normal deformed structures in 163Lu

D.R. Jensen, G.B. Hagemann, I. Hamamoto, S.W. Ødegård, M. Bergström, B. Herskind, G. Sletten, S. Tormänen, J.N. Wilson, P.O. Tjom, K. Spohr, H. Hübel, A. Görgen, G. Schönwasser, A. Bracco, S. Leoni, A. Maj, C.M. Petrache, P. Bednarczyk, D. Curien

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Abstract

Wobbling is a rotational mode unique to a triaxial body. The Lu–Hf isotopes with N∼94 at high spin provide a possible region of nuclei with pronounced triaxiality. We have investigated 163Lu through the fusion-evaporation reaction 139La(29Si,5n)163Lu with a beam energy of 152 MeV. Three excited bands decaying into the known, presumably triaxial, superdeformed (TSD) band built on the i13/2 proton orbital are observed. The electromagnetic properties of the connecting transitions from the two strongest populated excited TSD bands have been investigated. New particle-rotor calculations in which one i13/2 quasiproton is coupled to the core of triaxial shape produce a variety of bands, whose properties can clearly be interpreted either as “wobbling” or “cranking” motion of the core. Evidence for the assignment of the excited TSD bands as one, and possibly even two wobbling phonon modes built on the yrast TSD band in 163Lu is given. These triaxial bands coexist with bands built on quasiparticle excitations in the normal deformed (ND) minimum for which new data are also presented.

Original language	English
Pages (from-to)	3-44
Number of pages	42
Journal	Nuclear Physics A
Volume	703
Issue number	1-2
DOIs	https://doi.org/10.1016/S0375-9474(01)01459-2
Publication status	Published - 20 May 2002

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Jensen, D. R., Hagemann, G. B., Hamamoto, I., Ødegård, S. W., Bergström, M., Herskind, B., Sletten, G., Tormänen, S., Wilson, J. N., Tjom, P. O., Spohr, K., Hübel, H., Görgen, A., Schönwasser, G., Bracco, A., Leoni, S., Maj, A., Petrache, C. M., Bednarczyk, P., & Curien, D. (2002). Wobbling phonon excitations, coexisting with normal deformed structures in 163Lu. Nuclear Physics A, 703(1-2), 3-44. https://doi.org/10.1016/S0375-9474(01)01459-2

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title = "Wobbling phonon excitations, coexisting with normal deformed structures in 163Lu",

abstract = "Wobbling is a rotational mode unique to a triaxial body. The Lu–Hf isotopes with N∼94 at high spin provide a possible region of nuclei with pronounced triaxiality. We have investigated 163Lu through the fusion-evaporation reaction 139La(29Si,5n)163Lu with a beam energy of 152 MeV. Three excited bands decaying into the known, presumably triaxial, superdeformed (TSD) band built on the i13/2 proton orbital are observed. The electromagnetic properties of the connecting transitions from the two strongest populated excited TSD bands have been investigated. New particle-rotor calculations in which one i13/2 quasiproton is coupled to the core of triaxial shape produce a variety of bands, whose properties can clearly be interpreted either as “wobbling” or “cranking” motion of the core. Evidence for the assignment of the excited TSD bands as one, and possibly even two wobbling phonon modes built on the yrast TSD band in 163Lu is given. These triaxial bands coexist with bands built on quasiparticle excitations in the normal deformed (ND) minimum for which new data are also presented.",

author = "D.R. Jensen and G.B. Hagemann and I. Hamamoto and S.W. {\O}deg{\aa}rd and M. Bergstr{\"o}m and B. Herskind and G. Sletten and S. Torm{\"a}nen and J.N. Wilson and P.O. Tjom and K. Spohr and H. H{\"u}bel and A. G{\"o}rgen and G. Sch{\"o}nwasser and A. Bracco and S. Leoni and A. Maj and C.M. Petrache and P. Bednarczyk and D. Curien",

year = "2002",

month = may,

day = "20",

doi = "10.1016/S0375-9474(01)01459-2",

language = "English",

volume = "703",

pages = "3--44",

journal = "Nuclear Physics A",

issn = "0375-9474",

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Jensen, DR, Hagemann, GB, Hamamoto, I, Ødegård, SW, Bergström, M, Herskind, B, Sletten, G, Tormänen, S, Wilson, JN, Tjom, PO, Spohr, K, Hübel, H, Görgen, A, Schönwasser, G, Bracco, A, Leoni, S, Maj, A, Petrache, CM, Bednarczyk, P & Curien, D 2002, 'Wobbling phonon excitations, coexisting with normal deformed structures in 163Lu', Nuclear Physics A, vol. 703, no. 1-2, pp. 3-44. https://doi.org/10.1016/S0375-9474(01)01459-2

TY - JOUR

T1 - Wobbling phonon excitations, coexisting with normal deformed structures in 163Lu

AU - Jensen, D.R.

AU - Hagemann, G.B.

AU - Hamamoto, I.

AU - Ødegård, S.W.

AU - Bergström, M.

AU - Herskind, B.

AU - Sletten, G.

AU - Tormänen, S.

AU - Wilson, J.N.

AU - Tjom, P.O.

AU - Spohr, K.

AU - Hübel, H.

AU - Görgen, A.

AU - Schönwasser, G.

AU - Bracco, A.

AU - Leoni, S.

AU - Maj, A.

AU - Petrache, C.M.

AU - Bednarczyk, P.

AU - Curien, D.

PY - 2002/5/20

Y1 - 2002/5/20

N2 - Wobbling is a rotational mode unique to a triaxial body. The Lu–Hf isotopes with N∼94 at high spin provide a possible region of nuclei with pronounced triaxiality. We have investigated 163Lu through the fusion-evaporation reaction 139La(29Si,5n)163Lu with a beam energy of 152 MeV. Three excited bands decaying into the known, presumably triaxial, superdeformed (TSD) band built on the i13/2 proton orbital are observed. The electromagnetic properties of the connecting transitions from the two strongest populated excited TSD bands have been investigated. New particle-rotor calculations in which one i13/2 quasiproton is coupled to the core of triaxial shape produce a variety of bands, whose properties can clearly be interpreted either as “wobbling” or “cranking” motion of the core. Evidence for the assignment of the excited TSD bands as one, and possibly even two wobbling phonon modes built on the yrast TSD band in 163Lu is given. These triaxial bands coexist with bands built on quasiparticle excitations in the normal deformed (ND) minimum for which new data are also presented.

AB - Wobbling is a rotational mode unique to a triaxial body. The Lu–Hf isotopes with N∼94 at high spin provide a possible region of nuclei with pronounced triaxiality. We have investigated 163Lu through the fusion-evaporation reaction 139La(29Si,5n)163Lu with a beam energy of 152 MeV. Three excited bands decaying into the known, presumably triaxial, superdeformed (TSD) band built on the i13/2 proton orbital are observed. The electromagnetic properties of the connecting transitions from the two strongest populated excited TSD bands have been investigated. New particle-rotor calculations in which one i13/2 quasiproton is coupled to the core of triaxial shape produce a variety of bands, whose properties can clearly be interpreted either as “wobbling” or “cranking” motion of the core. Evidence for the assignment of the excited TSD bands as one, and possibly even two wobbling phonon modes built on the yrast TSD band in 163Lu is given. These triaxial bands coexist with bands built on quasiparticle excitations in the normal deformed (ND) minimum for which new data are also presented.

U2 - 10.1016/S0375-9474(01)01459-2

DO - 10.1016/S0375-9474(01)01459-2

M3 - Article

SN - 0375-9474

VL - 703

SP - 3

EP - 44

JO - Nuclear Physics A

JF - Nuclear Physics A

IS - 1-2

ER -

Wobbling phonon excitations, coexisting with normal deformed structures in 163Lu

Abstract

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