Elsevier

Nuclear Physics A

Volume 197, Issue 2, 18 December 1972, Pages 593-619
Nuclear Physics A

Niveaux d'énergie du 17773Ta

https://doi.org/10.1016/0375-9474(72)91032-9Get rights and content

Résumé

The energy levels of the odd-proton nucleus 177Ta have been studied from the electron-capture decay of 2.2. h 177W by means of magnetic spectrometers (axial, high-resolution permanent field, with and without pre-acceleration, iron-free double focussing), Si(Li), Ge(Li) and NaI(Tl) detectors and a proportional counter. Multidimensional coincidences (γ-γ and e-γ) involving time measurement have been performed with various combinations of these detectors. A level scheme is presented where the following intrinsic Nilsson states are identified in 177Ta: 72+[404], ground; 92[514] at 73.15 keV; 32+[411] at 865.0 keV; and the first rotational levels built on the 52+[402] state at 70.45 keV; the 12[541] state at 186.2 keV; the 12+[411] state at 487.6 keV. The transition probabilities of these levels and log ƒt values of the 177W decay are deduced.

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