Decay of three-particle high spin states in85Y View Full Text


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Article Info

DATE

1985-12

AUTHORS

R. Diller, K. P. Lieb, L. Lühmann, T. Osipowicz, P. Sona, B. Wörmann, L. Cleemann, J. Eberth

ABSTRACT

High spin states in85Y have been excited in the reaction72Ge(16O,p2n) at 48–60 MeV beam energy. From measurements ofnγ andγγ coincidences, excitation functions and angular distributions, the high spin spectrum of85Y has been established up to 5.4 MeV excitation energy and spinI≦29/2. Lifetimes or limits of lifetimes have been determined for 14 levels via the recoil distance and Doppler shift attenuation method. Theg9/2 decoupled proton band is found to backbend atIπ=17/2+ as also seen in the reduction of the 17/2+→13/2+ and 21/2+→17/2+E2 transition strengths. The lowest (3qp) positive parity band has predominantly aν2g9/2×πg9/2 structure. The observed negative parity yrast states in the spin range 15/2−≦I≦29/2− are most probably of (g9/2)2 ×(f5/2,p1/2) (3qp) nature as suggested by a comparison of the84Sr and85Y level structures and electromagnetic transition strengths. More... »

PAGES

659-669

References to SciGraph publications

  • 1982-12. Recoil distance lifetime measurements in82Kr in ZEITSCHRIFT FÜR PHYSIK A HADRONS AND NUCLEI
  • 1980-12. Gamma-ray spectroscopy of87Y in ZEITSCHRIFT FÜR PHYSIK A HADRONS AND NUCLEI
  • 1983-12. Yrast transition strengths in85Rb and85Sr in ZEITSCHRIFT FÜR PHYSIK A HADRONS AND NUCLEI
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1007/bf01432443

    DOI

    http://dx.doi.org/10.1007/bf01432443

    DIMENSIONS

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