Observation of high-spin states in theN=84 nucleusEr152and comparison with shell-model calculations

1 August 1992

journal article
research article
Published by American Physical Society (APS) in Physical Review C

Vol. 46 (2) , 484-498
https://doi.org/10.1103/physrevc.46.484

Abstract

High-spin states in

{}^{152}{Er}

have been populated through the

{}^{116}{Sn}

(^{40}

Ar,4n

)^{152}

Er reaction. Prompt and delayed γ-γ-γ-t and γ-e-t coincidences have been measured. Levels and transitions are assigned up to an excitation energy of 15 MeV and spin and parities up to

28^{+}

at 9.7 MeV. A new isomer [

t_{1 / 2}

=11(1) ns] has been observed at 13.4 MeV. The results are discussed in comparison with neighboring nuclei and with shell-model calculations.

Keywords

This publication has 20 references indexed in Scilit:

Level structure of 148Gd up to I=44
Physics Letters B, 1987
A superconducting electron spectrometer
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1984
$g$ factors of high spin states in ${}^{154, 155}{Er}$ and ${}^{157}{Yb}$ and the nature of the neutron ${\frac{13}{2}}^{+}$ quasiparticle in transitional nuclei
Physical Review C, 1984
Non-Collective Properties of the Continuum Gamma Rays Feeding Two High-Spin Isomers in152Er
Physica Scripta, 1981
High-spin states in the N = 84 nucleus 152Er
Nuclear Physics A, 1980
Gamma-spectroscopy within the island of high-spin isomers nearN=82
The European Physical Journal A, 1980
Particle hole yrast states in146Gd and147Gd and the Z=64 shell closure
Zeitschrift für Physik A Atoms and Nuclei, 1979
In-beam spectroscopy of low energy conversion electrons with a recoil shadow method ? A new possibility for subnanosecond lifetime measurements
Zeitschrift für Physik A Atoms and Nuclei, 1978
Structure of Yrast Traps
Physical Review Letters, 1977
Island of High-Spin Isomers near $N = 82$
Physical Review Letters, 1977