High-spin rotational bands in doubly odd I-118

E S Paul; D B Fossan; K Hauschild; I M Hibbert; H Schnare; J M Sears; I Thorslund; R Wadsworth; A N Wilson; J N Wilson

High-spin rotational bands in doubly odd I-118

E S Paul, D B Fossan, K Hauschild, I M Hibbert, H Schnare, J M Sears, I Thorslund, R Wadsworth, A N Wilson, J N Wilson

Physics

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

Abstract

Three Delta I = 2 rotational bands have been established to high spin in doubly odd I-118 using high-fold gamma-ray coincidence data collected with the Eurogam II spectrometer. Two of the bands are linked by dipole transitions at low spin and are believed to be signature partners built on the pi h(11/2) x nu h(11/2) structure. A low-spin signature inversion is observed and taken as evidence for a triaxial shape with gamma > 0 degrees, which is supported by TRS cranking calculations. The third band, seen at higher spin/frequency, is tentatively associated with a deformed five-particle-two-hole configuration, whereby two g(9/2) proton holes result from two-particle-two-hole excitations across the Z = 50 shell gap.

Original language	English
Pages (from-to)	653-658
Number of pages	6
Journal	Journal of physics g-Nuclear and particle physics
Volume	22
Issue number	5
Publication status	Published - May 1996

Keywords

SIGNATURE INVERSION
INTRUDER BANDS
MASS REGION
NUCLEI
SHAPE

Cite this

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title = "High-spin rotational bands in doubly odd I-118",

abstract = "Three Delta I = 2 rotational bands have been established to high spin in doubly odd I-118 using high-fold gamma-ray coincidence data collected with the Eurogam II spectrometer. Two of the bands are linked by dipole transitions at low spin and are believed to be signature partners built on the pi h(11/2) x nu h(11/2) structure. A low-spin signature inversion is observed and taken as evidence for a triaxial shape with gamma > 0 degrees, which is supported by TRS cranking calculations. The third band, seen at higher spin/frequency, is tentatively associated with a deformed five-particle-two-hole configuration, whereby two g(9/2) proton holes result from two-particle-two-hole excitations across the Z = 50 shell gap.",

keywords = "SIGNATURE INVERSION, INTRUDER BANDS, MASS REGION, NUCLEI, SHAPE",

author = "Paul, {E S} and Fossan, {D B} and K Hauschild and Hibbert, {I M} and H Schnare and Sears, {J M} and I Thorslund and R Wadsworth and Wilson, {A N} and Wilson, {J N}",

year = "1996",

month = may,

language = "English",

volume = "22",

pages = "653--658",

journal = "Journal of physics g-Nuclear and particle physics",

issn = "0954-3899",

publisher = "IOP Publishing",

number = "5",

}

TY - JOUR

T1 - High-spin rotational bands in doubly odd I-118

AU - Paul, E S

AU - Fossan, D B

AU - Hauschild, K

AU - Hibbert, I M

AU - Schnare, H

AU - Sears, J M

AU - Thorslund, I

AU - Wadsworth, R

AU - Wilson, A N

AU - Wilson, J N

PY - 1996/5

Y1 - 1996/5

N2 - Three Delta I = 2 rotational bands have been established to high spin in doubly odd I-118 using high-fold gamma-ray coincidence data collected with the Eurogam II spectrometer. Two of the bands are linked by dipole transitions at low spin and are believed to be signature partners built on the pi h(11/2) x nu h(11/2) structure. A low-spin signature inversion is observed and taken as evidence for a triaxial shape with gamma > 0 degrees, which is supported by TRS cranking calculations. The third band, seen at higher spin/frequency, is tentatively associated with a deformed five-particle-two-hole configuration, whereby two g(9/2) proton holes result from two-particle-two-hole excitations across the Z = 50 shell gap.

AB - Three Delta I = 2 rotational bands have been established to high spin in doubly odd I-118 using high-fold gamma-ray coincidence data collected with the Eurogam II spectrometer. Two of the bands are linked by dipole transitions at low spin and are believed to be signature partners built on the pi h(11/2) x nu h(11/2) structure. A low-spin signature inversion is observed and taken as evidence for a triaxial shape with gamma > 0 degrees, which is supported by TRS cranking calculations. The third band, seen at higher spin/frequency, is tentatively associated with a deformed five-particle-two-hole configuration, whereby two g(9/2) proton holes result from two-particle-two-hole excitations across the Z = 50 shell gap.

KW - SIGNATURE INVERSION

KW - INTRUDER BANDS

KW - MASS REGION

KW - NUCLEI

KW - SHAPE

M3 - Article

SN - 0954-3899

VL - 22

SP - 653

EP - 658

JO - Journal of physics g-Nuclear and particle physics

JF - Journal of physics g-Nuclear and particle physics

IS - 5

ER -