1ST OBSERVATION OF A COLLECTIVE DIPOLE ROTATIONAL BAND IN THE A APPROXIMATELY 200 MASS REGION

R M Clark; R Wadsworth; E S Paul; C W Beausang; I Ali; A Astier; D M Cullen; P J Dagnall; P Fallon; M J Joyce; M Meyer; N Redon; P H Regan; W Nazarewicz; R Wyss

1ST OBSERVATION OF A COLLECTIVE DIPOLE ROTATIONAL BAND IN THE A APPROXIMATELY 200 MASS REGION

R M Clark, R Wadsworth, E S Paul, C W Beausang, I Ali, A Astier, D M Cullen, P J Dagnall, P Fallon, M J Joyce, M Meyer, N Redon, P H Regan, W Nazarewicz, R Wyss

Physics

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

Abstract

The nucleus 198Pb was populated via the W-186(O-17, 5n) 198Pb reaction at beam energies of 92 and 98 MeV. A highly regular rotational DELTA-I = 1 band has been found. Angular correlation measurements confirm the transitions to be dipoles. Assuming M1 multipolarity for these transitions the experimental data are interpreted in terms of a pi([505]9-/2 x [606]13+/2)K(pi) = 11- x nu(i13/2)2 configuration of oblate shape. This is the first such collective oblate structure identified in the A approximately 200 mass region.

Original language	English
Pages (from-to)	247-251
Number of pages	5
Journal	Physics Letters B
Volume	275
Issue number	3-4
Publication status	Published - 30 Jan 1992

Keywords

DEFICIENT PB ISOTOPES
SHAPE COEXISTENCE
STATES
NUCLEI
SPECTROSCOPY
EXCITATIONS
INTRUDER

Cite this

@article{2aab1cb5b8c64196a04cd5bcfd66c320,

title = "1ST OBSERVATION OF A COLLECTIVE DIPOLE ROTATIONAL BAND IN THE A APPROXIMATELY 200 MASS REGION",

abstract = "The nucleus 198Pb was populated via the W-186(O-17, 5n) 198Pb reaction at beam energies of 92 and 98 MeV. A highly regular rotational DELTA-I = 1 band has been found. Angular correlation measurements confirm the transitions to be dipoles. Assuming M1 multipolarity for these transitions the experimental data are interpreted in terms of a pi([505]9-/2 x [606]13+/2)K(pi) = 11- x nu(i13/2)2 configuration of oblate shape. This is the first such collective oblate structure identified in the A approximately 200 mass region.",

keywords = "DEFICIENT PB ISOTOPES, SHAPE COEXISTENCE, STATES, NUCLEI, SPECTROSCOPY, EXCITATIONS, INTRUDER",

author = "Clark, {R M} and R Wadsworth and Paul, {E S} and Beausang, {C W} and I Ali and A Astier and Cullen, {D M} and Dagnall, {P J} and P Fallon and Joyce, {M J} and M Meyer and N Redon and Regan, {P H} and W Nazarewicz and R Wyss",

year = "1992",

month = jan,

day = "30",

language = "English",

volume = "275",

pages = "247--251",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier",

number = "3-4",

}

TY - JOUR

T1 - 1ST OBSERVATION OF A COLLECTIVE DIPOLE ROTATIONAL BAND IN THE A APPROXIMATELY 200 MASS REGION

AU - Clark, R M

AU - Wadsworth, R

AU - Paul, E S

AU - Beausang, C W

AU - Ali, I

AU - Astier, A

AU - Cullen, D M

AU - Dagnall, P J

AU - Fallon, P

AU - Joyce, M J

AU - Meyer, M

AU - Redon, N

AU - Regan, P H

AU - Nazarewicz, W

AU - Wyss, R

PY - 1992/1/30

Y1 - 1992/1/30

N2 - The nucleus 198Pb was populated via the W-186(O-17, 5n) 198Pb reaction at beam energies of 92 and 98 MeV. A highly regular rotational DELTA-I = 1 band has been found. Angular correlation measurements confirm the transitions to be dipoles. Assuming M1 multipolarity for these transitions the experimental data are interpreted in terms of a pi([505]9-/2 x [606]13+/2)K(pi) = 11- x nu(i13/2)2 configuration of oblate shape. This is the first such collective oblate structure identified in the A approximately 200 mass region.

AB - The nucleus 198Pb was populated via the W-186(O-17, 5n) 198Pb reaction at beam energies of 92 and 98 MeV. A highly regular rotational DELTA-I = 1 band has been found. Angular correlation measurements confirm the transitions to be dipoles. Assuming M1 multipolarity for these transitions the experimental data are interpreted in terms of a pi([505]9-/2 x [606]13+/2)K(pi) = 11- x nu(i13/2)2 configuration of oblate shape. This is the first such collective oblate structure identified in the A approximately 200 mass region.

KW - DEFICIENT PB ISOTOPES

KW - SHAPE COEXISTENCE

KW - STATES

KW - NUCLEI

KW - SPECTROSCOPY

KW - EXCITATIONS

KW - INTRUDER

M3 - Article

SN - 0370-2693

VL - 275

SP - 247

EP - 251

JO - Physics Letters B

JF - Physics Letters B

IS - 3-4

ER -