THE YRAST SUPERDEFORMED BAND IN PB-194 - DIFFERENCES WITH HG-192

B J P Gall; I Deloncle; M G Porquet; F Hannachi; M Aiche; F Azaiez; G Bastin; C W Beausang; R Beraud; C Bourgeois; R M Clark; R Duffait; J Duprat; K Hauschild; H Hubel; M J Joyce; M Kaci; A Korichi; Y Lecoz; M Meyer; E S Paul; N Perrin; N Poffe; N Redon; C Schuck; H Sergolle; J F Sharpeyschafer; J Simpson; A G Smith; R Wadsworth

THE YRAST SUPERDEFORMED BAND IN PB-194 - DIFFERENCES WITH HG-192

B J P Gall, I Deloncle, M G Porquet, F Hannachi, M Aiche, F Azaiez, G Bastin, C W Beausang, R Beraud, C Bourgeois, R M Clark, R Duffait, J Duprat, K Hauschild, H Hubel, M J Joyce, M Kaci, A Korichi, Y Lecoz, M MeyerE S Paul, N Perrin, N Poffe, N Redon, C Schuck, H Sergolle, J F Sharpeyschafer, J Simpson, A G Smith, R Wadsworth

Physics

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

Abstract

The yrast superdeformed (SD) structure of Pb-194 has been studied using the EUROGAM gamma-ray spectrometer. New results have been obtained at low as well as at high spin values. At low frequency, the SD band has been extended to the lowest-spin SD state ever observed in the A similar to 190 region. The energies of Pb-194 and Hg-192 SD bands are identical for ($) over bar h omega < 0.25 MeV. However, they diverge for higher frequency, which rules out the idea that these two SD bands are identical. Moreover, the SD band of Pb-194 is populated at lower spin values than that of Hg-192 and de-excites towards normally-deformed (ND) states at a spin value lower than that of Hg-192. This suggests that the barrier separating the SD and ND minima in the potential energy surface is higher in Pb-194 than in Hg-192.

Original language	English
Pages (from-to)	124-130
Number of pages	7
Journal	Physics Letters B
Volume	345
Issue number	2
Publication status	Published - 9 Feb 1995

Keywords

SHAPE ISOMERISM
0+ STATES
NUCLEI
EUROGAM
POPULATION
MOMENTS
ARRAY
DECAY
SPIN

Cite this

Gall, B. J. P., Deloncle, I., Porquet, M. G., Hannachi, F., Aiche, M., Azaiez, F., Bastin, G., Beausang, C. W., Beraud, R., Bourgeois, C., Clark, R. M., Duffait, R., Duprat, J., Hauschild, K., Hubel, H., Joyce, M. J., Kaci, M., Korichi, A., Lecoz, Y., ... Wadsworth, R. (1995). THE YRAST SUPERDEFORMED BAND IN PB-194 - DIFFERENCES WITH HG-192. Physics Letters B, 345(2), 124-130.

@article{173f1fec17414d379353ce2eb0c390a5,

title = "THE YRAST SUPERDEFORMED BAND IN PB-194 - DIFFERENCES WITH HG-192",

abstract = "The yrast superdeformed (SD) structure of Pb-194 has been studied using the EUROGAM gamma-ray spectrometer. New results have been obtained at low as well as at high spin values. At low frequency, the SD band has been extended to the lowest-spin SD state ever observed in the A similar to 190 region. The energies of Pb-194 and Hg-192 SD bands are identical for ($) over bar h omega < 0.25 MeV. However, they diverge for higher frequency, which rules out the idea that these two SD bands are identical. Moreover, the SD band of Pb-194 is populated at lower spin values than that of Hg-192 and de-excites towards normally-deformed (ND) states at a spin value lower than that of Hg-192. This suggests that the barrier separating the SD and ND minima in the potential energy surface is higher in Pb-194 than in Hg-192.",

keywords = "SHAPE ISOMERISM, 0+ STATES, NUCLEI, EUROGAM, POPULATION, MOMENTS, ARRAY, DECAY, SPIN",

author = "Gall, {B J P} and I Deloncle and Porquet, {M G} and F Hannachi and M Aiche and F Azaiez and G Bastin and Beausang, {C W} and R Beraud and C Bourgeois and Clark, {R M} and R Duffait and J Duprat and K Hauschild and H Hubel and Joyce, {M J} and M Kaci and A Korichi and Y Lecoz and M Meyer and Paul, {E S} and N Perrin and N Poffe and N Redon and C Schuck and H Sergolle and Sharpeyschafer, {J F} and J Simpson and Smith, {A G} and R Wadsworth",

year = "1995",

month = feb,

day = "9",

language = "English",

volume = "345",

pages = "124--130",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier",

number = "2",

}

Gall, BJP, Deloncle, I, Porquet, MG, Hannachi, F, Aiche, M, Azaiez, F, Bastin, G, Beausang, CW, Beraud, R, Bourgeois, C, Clark, RM, Duffait, R, Duprat, J, Hauschild, K, Hubel, H, Joyce, MJ, Kaci, M, Korichi, A, Lecoz, Y, Meyer, M, Paul, ES, Perrin, N, Poffe, N, Redon, N, Schuck, C, Sergolle, H, Sharpeyschafer, JF, Simpson, J, Smith, AG & Wadsworth, R 1995, 'THE YRAST SUPERDEFORMED BAND IN PB-194 - DIFFERENCES WITH HG-192', Physics Letters B, vol. 345, no. 2, pp. 124-130.

TY - JOUR

T1 - THE YRAST SUPERDEFORMED BAND IN PB-194 - DIFFERENCES WITH HG-192

AU - Gall, B J P

AU - Deloncle, I

AU - Porquet, M G

AU - Hannachi, F

AU - Aiche, M

AU - Azaiez, F

AU - Bastin, G

AU - Beausang, C W

AU - Beraud, R

AU - Bourgeois, C

AU - Clark, R M

AU - Duffait, R

AU - Duprat, J

AU - Hauschild, K

AU - Hubel, H

AU - Joyce, M J

AU - Kaci, M

AU - Korichi, A

AU - Lecoz, Y

AU - Meyer, M

AU - Paul, E S

AU - Perrin, N

AU - Poffe, N

AU - Redon, N

AU - Schuck, C

AU - Sergolle, H

AU - Sharpeyschafer, J F

AU - Simpson, J

AU - Smith, A G

AU - Wadsworth, R

PY - 1995/2/9

Y1 - 1995/2/9

N2 - The yrast superdeformed (SD) structure of Pb-194 has been studied using the EUROGAM gamma-ray spectrometer. New results have been obtained at low as well as at high spin values. At low frequency, the SD band has been extended to the lowest-spin SD state ever observed in the A similar to 190 region. The energies of Pb-194 and Hg-192 SD bands are identical for ($) over bar h omega < 0.25 MeV. However, they diverge for higher frequency, which rules out the idea that these two SD bands are identical. Moreover, the SD band of Pb-194 is populated at lower spin values than that of Hg-192 and de-excites towards normally-deformed (ND) states at a spin value lower than that of Hg-192. This suggests that the barrier separating the SD and ND minima in the potential energy surface is higher in Pb-194 than in Hg-192.

AB - The yrast superdeformed (SD) structure of Pb-194 has been studied using the EUROGAM gamma-ray spectrometer. New results have been obtained at low as well as at high spin values. At low frequency, the SD band has been extended to the lowest-spin SD state ever observed in the A similar to 190 region. The energies of Pb-194 and Hg-192 SD bands are identical for ($) over bar h omega < 0.25 MeV. However, they diverge for higher frequency, which rules out the idea that these two SD bands are identical. Moreover, the SD band of Pb-194 is populated at lower spin values than that of Hg-192 and de-excites towards normally-deformed (ND) states at a spin value lower than that of Hg-192. This suggests that the barrier separating the SD and ND minima in the potential energy surface is higher in Pb-194 than in Hg-192.

KW - SHAPE ISOMERISM

KW - 0+ STATES

KW - NUCLEI

KW - EUROGAM

KW - POPULATION

KW - MOMENTS

KW - ARRAY

KW - DECAY

KW - SPIN

M3 - Article

SN - 0370-2693

VL - 345

SP - 124

EP - 130

JO - Physics Letters B

JF - Physics Letters B

IS - 2

ER -