Coexisting normal and triaxial superdeformed structures in $^165Lu$

G. Schönwasser; N. Nenoff; H. Hübel; G.B. Hagemann; P. Bednarczyk; G. Benzoni; A. Bracco; P. Bringel; R. Chapman; D. Curien; J. Domscheit; B. Herskind; D.R. Jensen; S. Leoni; G. Lo Bianco; W.C. Ma; A. Maj; A. Neusser; S.W. Ødegård; C.M. Petrache; D. Rossbach; H. Ryde; A.K. Singh; K.H. Spohr

doi:10.1016/j.nuclphysa.2004.02.006

Coexisting normal and triaxial superdeformed structures in $^165Lu$

G. Schönwasser, N. Nenoff, H. Hübel, G.B. Hagemann, P. Bednarczyk, G. Benzoni, A. Bracco, P. Bringel, R. Chapman, D. Curien, J. Domscheit, B. Herskind, D.R. Jensen, S. Leoni, G. Lo Bianco, W.C. Ma, A. Maj, A. Neusser, S.W. Ødegård, C.M. PetracheD. Rossbach, H. Ryde, A.K. Singh, K.H. Spohr

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27 Citations (Scopus)

Abstract

High-spin states in 165Lu were populated in the 139La(30Si,4n) reaction at a beam energy of 152 MeV and γ-ray coincidences were measured with the EUROBALL spectrometer array. Nine new rotational bands were discovered, known band structures were considerably extended and many inter-band transitions were found. Structures with normal deformation coexist with bands associated with the strongly deformed triaxial energy minima found in calculations. Three of these triaxial bands form a family of wobbling excitations with phonon quanta nw=0, 1 and 2. The wobbling mode is a unique signature of nuclear triaxiality. Configuration assignments are discussed for the observed band structures. An exchange of configuration between two of the new bands due to mixing is observed, resulting in different signature partnerships at low and high spins.

Original language	English
Pages (from-to)	393-424
Number of pages	32
Journal	Nuclear Physics A
Volume	735
Issue number	3-4
DOIs	https://doi.org/10.1016/j.nuclphysa.2004.02.006
Publication status	Published - 3 May 2004

Keywords

Nuclear reactions139La(30Si,4n)
E=152 MeV
measured, Eγ
Iγ
γγ-coin
165Lu deduced, high-spin levels
J
π
configurations
shape coexistence
triaxial deformation
Euroball array

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10.1016/j.nuclphysa.2004.02.006

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Schönwasser, G., Nenoff, N., Hübel, H., Hagemann, G. B., Bednarczyk, P., Benzoni, G., Bracco, A., Bringel, P., Chapman, R., Curien, D., Domscheit, J., Herskind, B., Jensen, D. R., Leoni, S., Lo Bianco, G., Ma, W. C., Maj, A., Neusser, A., Ødegård, S. W., ... Spohr, K. H. (2004). Coexisting normal and triaxial superdeformed structures in $^165Lu$. Nuclear Physics A, 735(3-4), 393-424. https://doi.org/10.1016/j.nuclphysa.2004.02.006

@article{5b0b9ccf404a4b2bba647bed801f54f7,

title = "Coexisting normal and triaxial superdeformed structures in $^165Lu$",

abstract = "High-spin states in 165Lu were populated in the 139La(30Si,4n) reaction at a beam energy of 152 MeV and γ-ray coincidences were measured with the EUROBALL spectrometer array. Nine new rotational bands were discovered, known band structures were considerably extended and many inter-band transitions were found. Structures with normal deformation coexist with bands associated with the strongly deformed triaxial energy minima found in calculations. Three of these triaxial bands form a family of wobbling excitations with phonon quanta nw=0, 1 and 2. The wobbling mode is a unique signature of nuclear triaxiality. Configuration assignments are discussed for the observed band structures. An exchange of configuration between two of the new bands due to mixing is observed, resulting in different signature partnerships at low and high spins.",

keywords = "Nuclear reactions139La(30Si,4n), E=152 MeV, measured, Eγ, Iγ, γγ-coin, 165Lu deduced, high-spin levels, J, π, configurations, shape coexistence, triaxial deformation, Euroball array",

author = "G. Sch{\"o}nwasser and N. Nenoff and H. H{\"u}bel and G.B. Hagemann and P. Bednarczyk and G. Benzoni and A. Bracco and P. Bringel and R. Chapman and D. Curien and J. Domscheit and B. Herskind and D.R. Jensen and S. Leoni and {Lo Bianco}, G. and W.C. Ma and A. Maj and A. Neusser and S.W. {\O}deg{\aa}rd and C.M. Petrache and D. Rossbach and H. Ryde and A.K. Singh and K.H. Spohr",

year = "2004",

month = may,

day = "3",

doi = "10.1016/j.nuclphysa.2004.02.006",

language = "English",

volume = "735",

pages = "393--424",

journal = "Nuclear Physics A",

issn = "0375-9474",

publisher = "Elsevier B.V.",

number = "3-4",

}

Schönwasser, G, Nenoff, N, Hübel, H, Hagemann, GB, Bednarczyk, P, Benzoni, G, Bracco, A, Bringel, P, Chapman, R, Curien, D, Domscheit, J, Herskind, B, Jensen, DR, Leoni, S, Lo Bianco, G, Ma, WC, Maj, A, Neusser, A, Ødegård, SW, Petrache, CM, Rossbach, D, Ryde, H, Singh, AK & Spohr, KH 2004, 'Coexisting normal and triaxial superdeformed structures in $^165Lu$', Nuclear Physics A, vol. 735, no. 3-4, pp. 393-424. https://doi.org/10.1016/j.nuclphysa.2004.02.006

TY - JOUR

T1 - Coexisting normal and triaxial superdeformed structures in $^165Lu$

AU - Schönwasser, G.

AU - Nenoff, N.

AU - Hübel, H.

AU - Hagemann, G.B.

AU - Bednarczyk, P.

AU - Benzoni, G.

AU - Bracco, A.

AU - Bringel, P.

AU - Chapman, R.

AU - Curien, D.

AU - Domscheit, J.

AU - Herskind, B.

AU - Jensen, D.R.

AU - Leoni, S.

AU - Lo Bianco, G.

AU - Ma, W.C.

AU - Maj, A.

AU - Neusser, A.

AU - Ødegård, S.W.

AU - Petrache, C.M.

AU - Rossbach, D.

AU - Ryde, H.

AU - Singh, A.K.

AU - Spohr, K.H.

PY - 2004/5/3

Y1 - 2004/5/3

N2 - High-spin states in 165Lu were populated in the 139La(30Si,4n) reaction at a beam energy of 152 MeV and γ-ray coincidences were measured with the EUROBALL spectrometer array. Nine new rotational bands were discovered, known band structures were considerably extended and many inter-band transitions were found. Structures with normal deformation coexist with bands associated with the strongly deformed triaxial energy minima found in calculations. Three of these triaxial bands form a family of wobbling excitations with phonon quanta nw=0, 1 and 2. The wobbling mode is a unique signature of nuclear triaxiality. Configuration assignments are discussed for the observed band structures. An exchange of configuration between two of the new bands due to mixing is observed, resulting in different signature partnerships at low and high spins.

AB - High-spin states in 165Lu were populated in the 139La(30Si,4n) reaction at a beam energy of 152 MeV and γ-ray coincidences were measured with the EUROBALL spectrometer array. Nine new rotational bands were discovered, known band structures were considerably extended and many inter-band transitions were found. Structures with normal deformation coexist with bands associated with the strongly deformed triaxial energy minima found in calculations. Three of these triaxial bands form a family of wobbling excitations with phonon quanta nw=0, 1 and 2. The wobbling mode is a unique signature of nuclear triaxiality. Configuration assignments are discussed for the observed band structures. An exchange of configuration between two of the new bands due to mixing is observed, resulting in different signature partnerships at low and high spins.

KW - Nuclear reactions139La(30Si,4n)

KW - E=152 MeV

KW - measured, Eγ

KW - Iγ

KW - γγ-coin

KW - 165Lu deduced, high-spin levels

KW - J

KW - π

KW - configurations

KW - shape coexistence

KW - triaxial deformation

KW - Euroball array

U2 - 10.1016/j.nuclphysa.2004.02.006

DO - 10.1016/j.nuclphysa.2004.02.006

M3 - Article

SN - 0375-9474

VL - 735

SP - 393

EP - 424

JO - Nuclear Physics A

JF - Nuclear Physics A

IS - 3-4

ER -

Coexisting normal and triaxial superdeformed structures in $^165Lu$

Abstract

Keywords

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