High spin investigation in Pb-193 with EUROGAM 2: Coexistence of superdeformed and dipole bands

A Astier; L Ducroux; R Duffait; Y LeCoz; M Meyer; S Perries; N Redon; J F SharpeySchafer; A N Wilson; B J P Gall; R Collatz; I Deloncle; F Hannachi; A LopezMartens; M G Porquet; C Schuck; F Azaiez; S Bouneau; C Bourgeois; A Korichi; N Poffe; H Sergolle; R Lucas; V Meot; I Hibbert; R Wadsworth

High spin investigation in Pb-193 with EUROGAM 2: Coexistence of superdeformed and dipole bands

A Astier, L Ducroux, R Duffait, Y LeCoz, M Meyer, S Perries, N Redon, J F SharpeySchafer, A N Wilson, B J P Gall, R Collatz, I Deloncle, F Hannachi, A LopezMartens, M G Porquet, C Schuck, F Azaiez, S Bouneau, C Bourgeois, A KorichiN Poffe, H Sergolle, R Lucas, V Meot, I Hibbert, R Wadsworth

Physics

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

Abstract

The nucleus (193)pb was populated via the Er-168(Si-30, 5n) reaction at a beam energy of 159 MeV and studied with the EUROGAM II spectrometer. Five new dipole Delta I = 1 cascades have been found, The Pb-193 dipole bands are discussed in terms of microscopic HF+BCS calculations. The proposed configurations are based on a high-K two-quasiproton excitation coupled to rotation aligned quasineutrons. Parallel to the dipole bands the six superdeformed bands have been discussed in the framework of microscopic mean-field calculations. The bands are interpreted as three pairs of signature partners based on quasineutron excitations. Cross-talk transitions linking two signature partner superdeformed bands have been observed and, for the first time in lead isotopes, a mean B(M1)/B(E2)ratio value of 0.15 +/- 0.04 mu(N)(2)/e(2)b(2) has been extracted.

Original language	English
Pages (from-to)	195-196
Number of pages	2
Journal	Zeitschrift fur physik a-Hadrons and nuclei
Volume	358
Issue number	2
Publication status	Published - 1997

Keywords

QUADRUPOLE
STATES

Cite this

Astier, A., Ducroux, L., Duffait, R., LeCoz, Y., Meyer, M., Perries, S., Redon, N., SharpeySchafer, J. F., Wilson, A. N., Gall, B. J. P., Collatz, R., Deloncle, I., Hannachi, F., LopezMartens, A., Porquet, M. G., Schuck, C., Azaiez, F., Bouneau, S., Bourgeois, C., ... Wadsworth, R. (1997). High spin investigation in Pb-193 with EUROGAM 2: Coexistence of superdeformed and dipole bands. Zeitschrift fur physik a-Hadrons and nuclei, 358(2), 195-196.

@article{ab2e4ca6b96c472a854a0ac5b80b1ac0,

title = "High spin investigation in Pb-193 with EUROGAM 2: Coexistence of superdeformed and dipole bands",

abstract = "The nucleus (193)pb was populated via the Er-168(Si-30, 5n) reaction at a beam energy of 159 MeV and studied with the EUROGAM II spectrometer. Five new dipole Delta I = 1 cascades have been found, The Pb-193 dipole bands are discussed in terms of microscopic HF+BCS calculations. The proposed configurations are based on a high-K two-quasiproton excitation coupled to rotation aligned quasineutrons. Parallel to the dipole bands the six superdeformed bands have been discussed in the framework of microscopic mean-field calculations. The bands are interpreted as three pairs of signature partners based on quasineutron excitations. Cross-talk transitions linking two signature partner superdeformed bands have been observed and, for the first time in lead isotopes, a mean B(M1)/B(E2)ratio value of 0.15 +/- 0.04 mu(N)(2)/e(2)b(2) has been extracted.",

keywords = "QUADRUPOLE, STATES",

author = "A Astier and L Ducroux and R Duffait and Y LeCoz and M Meyer and S Perries and N Redon and SharpeySchafer, {J F} and Wilson, {A N} and Gall, {B J P} and R Collatz and I Deloncle and F Hannachi and A LopezMartens and Porquet, {M G} and C Schuck and F Azaiez and S Bouneau and C Bourgeois and A Korichi and N Poffe and H Sergolle and R Lucas and V Meot and I Hibbert and R Wadsworth",

year = "1997",

language = "English",

volume = "358",

pages = "195--196",

journal = "Zeitschrift fur physik a-Hadrons and nuclei",

issn = "0939-7922",

publisher = "Springer",

number = "2",

}

Astier, A, Ducroux, L, Duffait, R, LeCoz, Y, Meyer, M, Perries, S, Redon, N, SharpeySchafer, JF, Wilson, AN, Gall, BJP, Collatz, R, Deloncle, I, Hannachi, F, LopezMartens, A, Porquet, MG, Schuck, C, Azaiez, F, Bouneau, S, Bourgeois, C, Korichi, A, Poffe, N, Sergolle, H, Lucas, R, Meot, V, Hibbert, I & Wadsworth, R 1997, 'High spin investigation in Pb-193 with EUROGAM 2: Coexistence of superdeformed and dipole bands', Zeitschrift fur physik a-Hadrons and nuclei, vol. 358, no. 2, pp. 195-196.

TY - JOUR

T1 - High spin investigation in Pb-193 with EUROGAM 2: Coexistence of superdeformed and dipole bands

AU - Astier, A

AU - Ducroux, L

AU - Duffait, R

AU - LeCoz, Y

AU - Meyer, M

AU - Perries, S

AU - Redon, N

AU - SharpeySchafer, J F

AU - Wilson, A N

AU - Gall, B J P

AU - Collatz, R

AU - Deloncle, I

AU - Hannachi, F

AU - LopezMartens, A

AU - Porquet, M G

AU - Schuck, C

AU - Azaiez, F

AU - Bouneau, S

AU - Bourgeois, C

AU - Korichi, A

AU - Poffe, N

AU - Sergolle, H

AU - Lucas, R

AU - Meot, V

AU - Hibbert, I

AU - Wadsworth, R

PY - 1997

Y1 - 1997

N2 - The nucleus (193)pb was populated via the Er-168(Si-30, 5n) reaction at a beam energy of 159 MeV and studied with the EUROGAM II spectrometer. Five new dipole Delta I = 1 cascades have been found, The Pb-193 dipole bands are discussed in terms of microscopic HF+BCS calculations. The proposed configurations are based on a high-K two-quasiproton excitation coupled to rotation aligned quasineutrons. Parallel to the dipole bands the six superdeformed bands have been discussed in the framework of microscopic mean-field calculations. The bands are interpreted as three pairs of signature partners based on quasineutron excitations. Cross-talk transitions linking two signature partner superdeformed bands have been observed and, for the first time in lead isotopes, a mean B(M1)/B(E2)ratio value of 0.15 +/- 0.04 mu(N)(2)/e(2)b(2) has been extracted.

AB - The nucleus (193)pb was populated via the Er-168(Si-30, 5n) reaction at a beam energy of 159 MeV and studied with the EUROGAM II spectrometer. Five new dipole Delta I = 1 cascades have been found, The Pb-193 dipole bands are discussed in terms of microscopic HF+BCS calculations. The proposed configurations are based on a high-K two-quasiproton excitation coupled to rotation aligned quasineutrons. Parallel to the dipole bands the six superdeformed bands have been discussed in the framework of microscopic mean-field calculations. The bands are interpreted as three pairs of signature partners based on quasineutron excitations. Cross-talk transitions linking two signature partner superdeformed bands have been observed and, for the first time in lead isotopes, a mean B(M1)/B(E2)ratio value of 0.15 +/- 0.04 mu(N)(2)/e(2)b(2) has been extracted.

KW - QUADRUPOLE

KW - STATES

M3 - Article

SN - 0939-7922

VL - 358

SP - 195

EP - 196

JO - Zeitschrift fur physik a-Hadrons and nuclei

JF - Zeitschrift fur physik a-Hadrons and nuclei

IS - 2

ER -