Band Structure in 79Y and the Question of T=0 Pairing

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding

Abstract

Excited states in the N = Z+1 nucleus Y-79 Were identified using the reaction Si-28(Fe-54, p2n)Y-79 at a 200 MeV beam energy and an experimental set up consisting of an array of Ge detectors and the Recoil Mass Spectrometer at Oak Ridge National Laboratory. With the help of additional gamma-gamma coincidence data obtained with Gammasphere, these gamma-rays were found to form a strongly-coupled rotational band with rigid-rotor-like behavior. Results of conventional Nilsson-Strutinsky cranked shell model calculations, which predict a deformation of beta(2)similar to 0.4, are in excellent agreement with the properties of this band. Similar calculations for the neighboring N = Z and N = Z + 1 nuclei are also in good agreement with experimental data. This suggests that the presence of the putative T = 0 neutron-proton pairing does not significantly affect such simple observables as the moments of inertia of these bands at low spins.

Details

Authors
  • S. D. Paul
  • C. Baktash
  • W. Satula
  • C. J. Gross
  • I. Birriel
  • R. M. Clark
  • R. A. Cunningham
  • M. Devlin
  • P. Fallon
  • A. Galindo-Uribarri
  • T. Ginter
  • D. R. Lafosse
  • J. Kay
  • F. Lerma
  • I. Y. Lee
  • C. Leyland
  • A. O. Macchiavelli
  • B. D. MacDonald
  • S. J. Metcalfe
  • A. Piechaczek
  • D. C. Radford
  • W. Reviol
  • L. L. Riedinger
  • K. Rykaczewski
  • D. G. Sarantites
  • J. X. Saladin
  • D. Shapira
  • G. N. Sylvan
  • S. L. Tabor
  • K. S. Toth
  • W. Weintraub
  • D. F. Winchell
  • V. Q. Wood
  • R. Wyss
  • C. H. Yu
External organisations
  • External Organization - Unknown
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Subatomic Physics
Original languageEnglish
Title of host publicationAIP Conference Proceedings
EditorsC. Baktash
PublisherAmerican Institute of Physics
Pages168-176
Volume481
Publication statusPublished - 1999
Publication categoryResearch
Peer-reviewedYes
EventNuclear Structure 98, 1998 - Gatlinburg, Tennessee, Gatlinburg, Tennessee, United States
Duration: 1998 Aug 101998 Aug 15

Publication series

Name
Volume481
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

ConferenceNuclear Structure 98, 1998
CountryUnited States
CityGatlinburg, Tennessee
Period1998/08/101998/08/15