Selection rules for beta and gamma particle transitions in strongly deformed nuclei
ABSTRACT In the present paper we give a complete list of selection rules for beta and gamma particle transitions in strongly deformed nuclei. For the beta decay the list covers all transitions up to the second forbidden ones, while for the gamma decay the selection rules are given for the electric and magnetic dipole, quadrupole, and octupole transitions. This list represents a slight correction and enlargement of the selection rules already given in ref. 5). References to the papers making use of the selection rules in classifying nuclear states and explaining relative beta and gamma intensities are given at the end of the article.
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ABSTRACT: Experimental data from the 165Ho(d,p)166Ho reaction were analyzed using the distorted-wave Born approximation formalism and Nilsson model wave functions with Coriolis mixing. It is concluded that the Kπ=1+ bands at 426 and 568 keV in 166Ho have the 7/2-π-5/2-ν and the 7/2-π-5/2-ν two-quasiparticle configurations, respectively. These assignments interchange the ones currently adopted for these two bands, but are in agreement with phenomenological and theoretical predictions. In addition, the (d,p) data suggest a tentative 7/2-π-1/2-ν assignment for the Kπ=3+ band based at 814 keV in 166Ho.Physical Review C 04/1995; 51(4):2226-2229. DOI:10.1103/PhysRevC.51.2226 · 3.88 Impact Factor
Article: The decay scheme of Yb166[Show abstract] [Hide abstract]
ABSTRACT: The gamma spectrum of Yb166 has been studied with a scintillation spectrometer. The probability PK of K electron capture, the reduced half-life for the decay to the excited state and the conversion coefficient αK of the 82 keV γ-transition have been measured. The total decay energy has been found to be Q = 256±20120 keV. The value of the reduced half-life for the electron capture transition to the excited state has been established to be log ft = 4.60 ± 0.200.55.The proposed decay scheme is discussed.Nuclear Physics 01/1963; 41(2):303–315. DOI:10.1016/0029-5582(63)90508-X · 1.71 Impact Factor
Article: The decay of 191Pt(3.0 d) to 191Ir[Show abstract] [Hide abstract]
ABSTRACT: The electron capture decay of 191Pt(3.0d) to excited states in 191Ir has been studied with a lithium-drifted germanium detector and a scintillation spectrometer. Singles and coincidence spectra were obtained. Previously reported transitions of 82.45 keV (M1+E2), 96.5 keV (M1+E2), 129.45 keV (M1+E2), 172.3 keV (M1), 179.0 keV (M1+E2), 187.75 keV, 213.8 keV, 219.8 keV, 221.9 keV, 223.7 keV (E2), 269.1 keV, 351.5 keV (M1), 360.3 keV (M1), 409.9 keV (M1), 457.0 keV (M1), 493.0 keV, 495.1 keV, 539.5 keV (M1), 569.1 keV, 575.6 keV, 584.2 keV, 588.3 keV (M1), 624.6 keV (M1) and 632.6 keV were verified. Hitherto unreported weak transitions of energy 659±2 keV and 762 keV were observed. Evidence has been found for a level at 588.3 keV recently postulated on the basis of an interpretation of resonance fluorescence measurements in 191Ir. The present data are consistent with a level scheme with states at . Ratios of experimental gamma-ray transition probabilities from the 539.3 keV, 351.4 keV and 179.0 keV states are presented. Absolute experimental M1 transition probabilities in the de-excitation of the 624.5 keV, 588.3 keV, 539.3 keV, 129.45 keV and 82.45 keV levels are compared with the Weisskopf and Nilsson estimates.Nuclear Physics 03/1966; 77(3):513–526. DOI:10.1016/0029-5582(66)90779-6 · 1.71 Impact Factor