Third Discontinuity in the Yrast Levels of <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>158</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span>

J. Burde; E. L. Dines; S. Shih; R. M. Diamond; J. E. Draper; K. H. Lindenberger; C. Schück; F. S. Stephens

doi:10.1103/PhysRevLett.48.530

Third Discontinuity in the Yrast Levels of ${}^{158}{Er}$

J. Burde, E. L. Dines, S. Shih, R. M. Diamond, J. E. Draper, K. H. Lindenberger, C. Schück, and F. S. Stephens

Phys. Rev. Lett. 48, 530 – Published 22 February 1982

Abstract

Discrete yrast transitions from states with spins up to $I = 38$ have been observed in ${}^{158}{Er}$ via the reaction ${}^{122}{Sn} ({}^{40}{Ar}, 4 n γ)$ . In addition to the pronounced backbend at $I = 14$ and the upbend at $I = 28$ previously known, the start of a third yrast discontinuity at $I = 38$ is indicated. Candidates for the $I = 40$ state are suggested and possible causes of the yrast discontinuity are discussed.

Received 7 December 1981

DOI:https://doi.org/10.1103/PhysRevLett.48.530

Authors & Affiliations

J. Burde^*, E. L. Dines^†, S. Shih^‡, R. M. Diamond, J. E. Draper^†, K. H. Lindenberger^§, C. Schück^∥, and F. S. Stephens

Nuclear Science Division, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720

^*Permanent address: Racah Institute of Physics, The Hebrew University of Jerusalem, Jerusalem, Israel.
^†Permanent address: Department of Physics, University of California, Davis, Cal. 95616.
^‡Permanent address: Shanghai Institute of Nuclear Research, Shanghai, People's Republic of China.
^§Permanent address: Hahn-Meitner Institute, 1 Berlin 39, West Germany.
^∥Permanent address: Centre de Spectrometrie Nucléaire et de Spectrometrie de Masse, F-91406 Orsay, France.