Level structure in 123Xe

Luukko, A.; Hattula, J.; Helppi, H.; Knuuttila, O.; Dönau, F.

doi:10.1016/0375-9474(81)90224-4

Cited by 37 publications

(43 citation statements)

References 15 publications

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“…The triaxial-rotor-model calculations [4] have been intensively used to reproduce the experimental negative parity level systems. A quite good agreement has been obtained for the medium mass isotopes [36,37] but the position of the 7/2-state cannot be described in the lighter xenons [2,1]. On the other hand, the relative positions of the low lying negative parity states in 119-123Xe, have been reproduced in the frame of the interacting boson-fermion model with admixtures of higher-lying single particle degrees of freedom as the f7/2 and h9/2 levels [40].…”

Section: Discussionmentioning

confidence: 81%

“…In odd-A Xe nuclei, systematics of the negative-parity states obtained by inbeam experiments is understood as based on the coupling of an hip 2 quasi-neutron hole to the even-even cores [1][2][3]. These negative parity bands observed from 133x.r~ to l19y~ 541~t,79 54zx~65 are mainly governed by the position of the Fermi energy in the h~/z shell, going from the nearly empty shell (N=79-77) to approximately the middle of the shell (N = 67 -65).…”

Section: Introductionmentioning

confidence: 99%

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Non-yrast level structure of121Xe via beta decay of121m+g Cs

Genevey

Gizon

Marguier

et al. 1991

Z. Physik A - Hadrons and Nuclei

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The results of measurements of the gamma-ray and conversion-electron singles and coincidence spectra from the decay of the 122 s leJmCS and the 155 s 12~gCs to levels of ~2~Xe are reported. The M3 multipolarity of the 68.5 keV isomeric transition in 12~Cs has been deduced. Numerous low-lying levels below 1.6 MeV excitation energy are found. A negative-parity level at 355.9 keV is observed for the first time. The results supplement the low lying energy level systematics in odd-A xenons. A comparison is made with the N = 67 barium isotone.

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Section: Discussionmentioning

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Non-yrast level structure of121Xe via beta decay of121m+g Cs

Genevey

Gizon

Marguier

et al. 1991

Z. Physik A - Hadrons and Nuclei

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“…The energies of the neutronhole states are known in all the odd Xe isotopes [9,21,[26][27][28][29][30]. Since the energies change only slowly as a function of neutron number, the effective energies in the even isotopes are readily obtained from the odd neighbours (Table 1).…”

Section: One-quasiparticle Energies E(i)mentioning

confidence: 99%

“…In this approach the two-nucleon matrix elements are presumed to be proportional to 1/N ~ 1/A. Thus the tin The proton energies are interpolated from data of [9,, the neutron-hole energies are from [9,[26][27][28][29]; cf. the text for details.…”

Section: Two-quasiparticle Interaction Energies a (I J; J)mentioning

confidence: 99%

On the structure of two-quasiparticle states in even-A Xe isotopes

Lönnroth

1984

Z Physik A

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The excitation energies of proton and neutron two-quasiparticle states in even-A xenon isotopes are studied within the shell-model framework. The results suggest that in the lighter isotopes (A__< 126) the proton excitations might be yrast, whereas in the heavier ones (A>130) the neutron-hole excitations dominate at lower energies. This finding would then explain the complex excitation spectra found in 126'128'13~ where the two excitation modes occur at comparable energies.

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“…It is well known [1,5] that the yrast levels of the neutron deficient odd Xe and Ba isotopes can be described by coupling an hll/z or g7/2 particle or hole to a triaxially deformed even-even core [2,3]. However, very little is known experimentally about E2 transition strengths and quadrupole moments, which depend very sensitively on the model parameters, such as deformation fl and asymmetry angle 7.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic transition strengths and nuclear moments in123Xe

et al. 1982

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The level structure of lZ3Xe has been studied with the 114Cd(12C, 3n) and 114Cd (13C, 4n) reactions using in-beam 7-ray spectroscopy. The yrast cascade on the low lying odd parity states originating from the h~t/2 neutron orbital has been investigated yielding lifetimes r of 18(3) ps, 2.2(4) ns and 17(2) ns for the 15/2-, 11/2-and 9/2 states, respectively. The g-factor of the t~/z = 5.2 gs isomer has been measured to be g= -0.256(2). From the time differential observation of the electric quadrupole interaction in a 1~4Cd single crystal the spin of this isomer has been determined to be 7/2 and from the coupling constant eZQq/h=ll6(2)MHz the quadrupole moment was deduced. The results are discussed in the framework of the triaxial rotor plus particle model.

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Level structure in 123Xe

Cited by 37 publications

References 15 publications

Non-yrast level structure of121Xe via beta decay of121m+g Cs

Non-yrast level structure of121Xe via beta decay of121m+g Cs

On the structure of two-quasiparticle states in even-A Xe isotopes

Electromagnetic transition strengths and nuclear moments in123Xe

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