Low-lying levels of 129Xe and 131Xe

The nuclei 129Xe and 131Xe have been studied by Coulomb excitation and by ( alpha ,n) reactions on 126Te and 128Te. The authors report eleven new levels for 129Xe and six for 131Xe and B(E2) spin up values for some of the low-lying states. The present Coulomb excitation experiments together with published beta -decay work enable some spin-parity assignments and restrictions to be made. The data are broadly consistent with the predictions of the particle-vibrator coupling model, although a thorough comparison requires further spectroscopic measurements and more detailed theoretical calculation.

[1]  S. Beshai,et al.  Angular correlation measurements in 131Xe , 1976 .

[2]  J. H. Landrum,et al.  Levels of odd-mass Xe populated in the beta decay of /sup 129/Cs, and /sup 133/I. [NONE] , 1976 .

[3]  P. Nolan,et al.  Decay modes and level lifetimes in 41Ca and 41K , 1976 .

[4]  H. Postma,et al.  NUCLEAR ORIENTATION OF NEGATIVE-PARITY STATES OF XE-131 , 1975 .

[5]  D. Murnick,et al.  Perturbed-angular-correlation studies of 2$sup +$ levels of even xenon isotopes , 1975 .

[6]  M. Pintar,et al.  Proton-spin thermometry at low fields in liquid crystals , 1974 .

[7]  H. Postma,et al.  Levels and transitions in 131Xe studied by the decay of oriented 131I , 1974 .

[8]  B. Singh.  Improved Gamma-Ray Energies for the Decay of 129Cs , 1972 .

[9]  M. Grecescu,et al.  Two- and three-quasiparticle states in 132Xe and 131Xe , 1971 .

[10]  G. Beard,et al.  Nuclear-Resonance Fluorescence in Xe 130 , 1970 .

[11]  S. R. Amtey,et al.  HIGH-RESOLUTION ELECTRON AND GAMMA-RAY STUDIES AND CONVERSION-COEFFICIENT MEASUREMENTS IN $sup 132$Xe. , 1970 .

[12]  C. Herrlander,et al.  High-spin states in odd Xe nuclei , 1970 .

[13]  T. Paradellis,et al.  Description of the positive parity states in odd Xe isotopes in the framework of the intermediate coupling approach of the unified model , 1970 .

[14]  L. C. Northcliffe,et al.  Range and stopping-power tables for heavy ions , 1970 .

[15]  J. Lien,et al.  Nuclear structure studies in the tellurium isotopes: the 126Te(d, p)127Te reaction , 1968 .

[16]  E. Navon,et al.  Absolute transition probabilities in 130Xe , 1968 .

[17]  E. Seltzer,et al.  INTERNAL CONVERSION TABLES. PART I. K,L,M-SHELL CONVERSION COEFFICIENTS. , 1968 .

[18]  S. O’dell,et al.  The 128Te(d, p) 129Te reaction at 7.5 MeV bombarding energy , 1967 .

[19]  W. Walters,et al.  Decay of Cs-129 and I-131 to the Levels in Xe-129 and Xe-131 , 1967 .

[20]  R. Heath,et al.  Photopeak analysis program for photon energy and intensity determinations: Ge(Li) and NaI(Tl) spectrometers☆ , 1967 .

[21]  A. Špalek,et al.  Radioactive decay of 129Cs , 1966 .

[22]  J. Hamilton,et al.  Low-energy transitions in the decay of 132I , 1965 .

[23]  I. Bergström,et al.  Measurements of M1 and E2 transition probabilities in Te125, I127, Xe129, Cs133, La139 and Pr141 , 1965 .

[24]  Raymond A. Sorensen,et al.  Spherical Nuclei with Simple Residual Forces , 1963 .

[25]  T. Boer,et al.  Half-lives of the first excited states of 102Ru, 126Xe, 196Hg, 160Dy, 164Er, 166Er and 180W , 1963 .

[26]  W. Hamilton.  The Lifetime of the 673 kev Level in 132Xe , 1961 .

[27]  A. Bohr,et al.  Study of Nuclear Structure by Electromagnetic Excitation with Accelerated Ions , 1956 .