New excited superdeformed bands in heavy Pb nuclei: Clue for an octupole softness near the N = 118 gap at large deformation

A. Prévost; N. Buforn; A. Astier; R. Duffait; M. Meyer; S. Perriès; N. Redon; O. Stézowski; A. Bauchet; I. Deloncle; M. G. Porquet; A. Görgen; H. Hübel; E. Mergel; S. Neumann; D. Roßbach; N. Nenoff; G. Schönwaßer; A. N. Wilson; R. Lucas; F. A. Beck; D. Curien; G. Duchêne; B. J.P. Gall; N. Kintz; J. P. Vivien; D. M. Cullen

doi:10.1007/s100500170139

New excited superdeformed bands in heavy Pb nuclei: Clue for an octupole softness near the N = 118 gap at large deformation

A. Prévost^*, N. Buforn, A. Astier, R. Duffait, M. Meyer, S. Perriès, N. Redon, O. Stézowski, A. Bauchet, I. Deloncle, M. G. Porquet, A. Görgen, H. Hübel, E. Mergel, S. Neumann, D. Roßbach, N. Nenoff, G. Schönwaßer, A. N. Wilson, R. LucasF. A. Beck, D. Curien, G. Duchêne, B. J.P. Gall, N. Kintz, J. P. Vivien, D. M. Cullen

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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Abstract

We report the identification of six new superdeformed (SD) bands in ^197,198Pb observed with the EUROBALL IV spectrometer. The results are interpreted in the framework of cranked Hartree-Fock calculations with approximate projection on the particle number by means of the Lipkin-Nogami method. A mixing between quasi-particle excitations and an octupole vibration is suggested in the two SD isotopes. We have estimated the ordering of the neutron valence orbitals and confirm indirectly a N = 118 SD gap.

Original language	English
Pages (from-to)	13-19
Number of pages	7
Journal	European Physical Journal A
Volume	10
Issue number	1
DOIs	https://doi.org/10.1007/s100500170139
Publication status	Published - 2001
Externally published	Yes

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Prévost, A., Buforn, N., Astier, A., Duffait, R., Meyer, M., Perriès, S., Redon, N., Stézowski, O., Bauchet, A., Deloncle, I., Porquet, M. G., Görgen, A., Hübel, H., Mergel, E., Neumann, S., Roßbach, D., Nenoff, N., Schönwaßer, G., Wilson, A. N., ... Cullen, D. M. (2001). New excited superdeformed bands in heavy Pb nuclei: Clue for an octupole softness near the N = 118 gap at large deformation. European Physical Journal A, 10(1), 13-19. https://doi.org/10.1007/s100500170139

@article{601502aa5249467ab7c4ad1d67f48558,

title = "New excited superdeformed bands in heavy Pb nuclei: Clue for an octupole softness near the N = 118 gap at large deformation",

abstract = "We report the identification of six new superdeformed (SD) bands in 197,198Pb observed with the EUROBALL IV spectrometer. The results are interpreted in the framework of cranked Hartree-Fock calculations with approximate projection on the particle number by means of the Lipkin-Nogami method. A mixing between quasi-particle excitations and an octupole vibration is suggested in the two SD isotopes. We have estimated the ordering of the neutron valence orbitals and confirm indirectly a N = 118 SD gap.",

author = "A. Pr{\'e}vost and N. Buforn and A. Astier and R. Duffait and M. Meyer and S. Perri{\`e}s and N. Redon and O. St{\'e}zowski and A. Bauchet and I. Deloncle and Porquet, {M. G.} and A. G{\"o}rgen and H. H{\"u}bel and E. Mergel and S. Neumann and D. Ro{\ss}bach and N. Nenoff and G. Sch{\"o}nwa{\ss}er and Wilson, {A. N.} and R. Lucas and Beck, {F. A.} and D. Curien and G. Duch{\^e}ne and Gall, {B. J.P.} and N. Kintz and Vivien, {J. P.} and Cullen, {D. M.}",

year = "2001",

doi = "10.1007/s100500170139",

language = "English",

volume = "10",

pages = "13--19",

journal = "European Physical Journal A",

issn = "1434-6001",

publisher = "Springer",

number = "1",

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Prévost, A, Buforn, N, Astier, A, Duffait, R, Meyer, M, Perriès, S, Redon, N, Stézowski, O, Bauchet, A, Deloncle, I, Porquet, MG, Görgen, A, Hübel, H, Mergel, E, Neumann, S, Roßbach, D, Nenoff, N, Schönwaßer, G, Wilson, AN, Lucas, R, Beck, FA, Curien, D, Duchêne, G, Gall, BJP, Kintz, N, Vivien, JP & Cullen, DM 2001, 'New excited superdeformed bands in heavy Pb nuclei: Clue for an octupole softness near the N = 118 gap at large deformation', European Physical Journal A, vol. 10, no. 1, pp. 13-19. https://doi.org/10.1007/s100500170139

TY - JOUR

T1 - New excited superdeformed bands in heavy Pb nuclei

T2 - Clue for an octupole softness near the N = 118 gap at large deformation

AU - Prévost, A.

AU - Buforn, N.

AU - Astier, A.

AU - Duffait, R.

AU - Meyer, M.

AU - Perriès, S.

AU - Redon, N.

AU - Stézowski, O.

AU - Bauchet, A.

AU - Deloncle, I.

AU - Porquet, M. G.

AU - Görgen, A.

AU - Hübel, H.

AU - Mergel, E.

AU - Neumann, S.

AU - Roßbach, D.

AU - Nenoff, N.

AU - Schönwaßer, G.

AU - Wilson, A. N.

AU - Lucas, R.

AU - Beck, F. A.

AU - Curien, D.

AU - Duchêne, G.

AU - Gall, B. J.P.

AU - Kintz, N.

AU - Vivien, J. P.

AU - Cullen, D. M.

PY - 2001

Y1 - 2001

N2 - We report the identification of six new superdeformed (SD) bands in 197,198Pb observed with the EUROBALL IV spectrometer. The results are interpreted in the framework of cranked Hartree-Fock calculations with approximate projection on the particle number by means of the Lipkin-Nogami method. A mixing between quasi-particle excitations and an octupole vibration is suggested in the two SD isotopes. We have estimated the ordering of the neutron valence orbitals and confirm indirectly a N = 118 SD gap.

AB - We report the identification of six new superdeformed (SD) bands in 197,198Pb observed with the EUROBALL IV spectrometer. The results are interpreted in the framework of cranked Hartree-Fock calculations with approximate projection on the particle number by means of the Lipkin-Nogami method. A mixing between quasi-particle excitations and an octupole vibration is suggested in the two SD isotopes. We have estimated the ordering of the neutron valence orbitals and confirm indirectly a N = 118 SD gap.

UR - http://www.scopus.com/inward/record.url?scp=18044404360&partnerID=8YFLogxK

U2 - 10.1007/s100500170139

DO - 10.1007/s100500170139

M3 - Article

SN - 1434-6001

VL - 10

SP - 13

EP - 19

JO - European Physical Journal A

JF - European Physical Journal A

IS - 1

ER -

New excited superdeformed bands in heavy Pb nuclei: Clue for an octupole softness near the N = 118 gap at large deformation

Abstract

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