New features of collective nuclear rotation at very high frequency in <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">Sb</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>109</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span>

V. P. Janzen; D. R. LaFosse; H. Schnare; D. B. Fossan; A. Galindo-Uribarri; J. R. Hughes; S. M. Mullins; E. S. Paul; L. Persson; S. Pilotte; D. C. Radford; I. Ragnarsson; P. Vaska; J. C. Waddington; R. Wadsworth; D. Ward; J. Wilson; R. Wyss

doi:10.1103/PhysRevLett.72.1160

New features of collective nuclear rotation at very high frequency in ${}^{109}{Sb}$

V. P. Janzen, D. R. LaFosse, H. Schnare, D. B. Fossan, A. Galindo-Uribarri, J. R. Hughes, S. M. Mullins, E. S. Paul, L. Persson, S. Pilotte, D. C. Radford, I. Ragnarsson, P. Vaska, J. C. Waddington, R. Wadsworth, D. Ward, J. Wilson, and R. Wyss

Phys. Rev. Lett. 72, 1160 – Published 21 February 1994

Abstract

Three rotational bands have been discovered in the nucleus ${}^{109}{Sb}$ that extend in angular momentum to ≃81/2ħ. The rotational frequency at the highest spins reaches ħω≃1.4 MeV, the highest frequency so far observed in a heavy nucleus. With increasing frequency the collective moments of inertia of all three bands smoothly diminish to unexpectedly low values, ${scrJ}^{(2)}$ ∼13 $ħ^{2}$ ${MeV}^{- 1}$ , approximately one-third the rigid-body value, and, contrary to expectations, the moments of inertia become nearly equal to one another and to those of rotational bands in the core nucleus ${}^{108}{Sn}$ .

Received 16 August 1993

DOI:https://doi.org/10.1103/PhysRevLett.72.1160

Authors & Affiliations

V. P. Janzen, D. R. LaFosse, H. Schnare, D. B. Fossan, A. Galindo-Uribarri, J. R. Hughes, S. M. Mullins, E. S. Paul, L. Persson, S. Pilotte, D. C. Radford, I. Ragnarsson, P. Vaska, J. C. Waddington, R. Wadsworth, D. Ward, J. Wilson, and R. Wyss

Chalk River Laboratories, AECL Research, Chalk River, Ontario Canada, K0J 1J0
Department of Physics, State University of New York at Stony Brook, Stony Brook, New York 11794
Department of Physics and Astronomy, McMaster University, Hamilton, Ontario, L8S 4M1
Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 3BX, United Kingdom
Department of Physics, University of Ottawa, Ottawa, Ontario, Canada K1N 6N5
Department of Mathematical Physics, University of Lund, P.O. Box 118, S-22110 Lund, Sweden
Department of Physics, University of York, York Y01 5DD, United Kingdom
Manne Siegbahn Institute of Physics, S-10405 Stockholm, Sweden