Observation of high-spin states in the <i>N</i>=84 nucleus <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">Er</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>152</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span> and comparison with shell-model calculations

A. Kuhnert; D. Alber; H. Grawe; H. Kluge; K. H. Maier; W. Reviol; X. Sun; E. M. Beck; A. P. Byrne; H. Hübel; J. C. Bacelar; M. A. Deleplanque; R. M. Diamond; F. S. Stephens

doi:10.1103/PhysRevC.46.484

Observation of high-spin states in the N=84 nucleus ${}^{152}{Er}$ and comparison with shell-model calculations

A. Kuhnert, D. Alber, H. Grawe, H. Kluge, K. H. Maier, W. Reviol, X. Sun, E. M. Beck, A. P. Byrne, H. Hübel, J. C. Bacelar, M. A. Deleplanque, R. M. Diamond, and F. S. Stephens

Phys. Rev. C 46, 484 – Published 1 August 1992

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.