Evidence for an Octupole Rotational Band in <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">Se</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>74</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span>

R. B. Piercey; A. V. Ramayya; R. M. Ronningen; J. H. Hamilton; R. L. Robinson; H. J. Kim

doi:10.1103/PhysRevLett.37.496

Evidence for an Octupole Rotational Band in ${}^{74}{Se}$

R. B. Piercey, A. V. Ramayya, R. M. Ronningen, J. H. Hamilton, R. L. Robinson, and H. J. Kim

Phys. Rev. Lett. 37, 496 – Published 30 August 1976

Abstract

From in-beam $γ$ -ray spectroscopy in ${}^{74}{Se}$ , a negative-parity band to ( $11^{-}$ ) with rotational properties built on a $3^{-}$ collective octupole state is established along with the positive-parity (Barrette et al.) yrast band to ( $14^{+}$ ). The negative-parity band has essentially a constant moment of inertia in sharp contrast to the positive-parity band. This is the first negative-parity band outside those in deformed nuclei with such pure rotational behavior.

Received 7 July 1976

DOI:https://doi.org/10.1103/PhysRevLett.37.496

Authors & Affiliations

R. B. Piercey, A. V. Ramayya, R. M. Ronningen, and J. H. Hamilton^*

Physics Department, Vanderbilt University, Nashville, Tennessee 37235

R. L. Robinson and H. J. Kim^†

Oak Ridge National Laboratory, Oak Ridge, Tennessee 37380

^*Work supported in part by grants from the National Science Foundation and the U. S. Energy Research and Development Administration.
^†Research supported by the U. S. Energy Research and Development Administration under contract to Union Carbide Corporation.