Multipole mixing ratios of γ-transltions in 182W |
| |
Authors: | LM Quinones ZW Grabowski |
| |
Institution: | Chemistry Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830 USA |
| |
Abstract: | γ-γ directional correlation experiments were performed on 14 cascades in 182W populated from the β? decay of 182Ta(115 d). Two Ge(Li) detectors were used in a coincidence arrangement, and the 182Ta sources were dissolved in HF acid to minimize extranuclear perturbations. For the 1189keV, 2? → 2+ transition, the measured directional correlation coefficients are consistent only with multipole mixing ratios . These mixing ratios are discussed and compared with the known conversion coefficients for the 1189keV transition. The E2/M1 multipole mixing ratios determined are (energy in keV): δ(66) = 0.15 ± 0.15, δ(85) = 0.31 ± 0.05, δ(114) = 0.31 ± 0.05, 0.56 ≦ δ(179) ≦ 1.36, δ(1121) = 12+2?1, and δ(1231) = ?(32+142?15). The measured M2/E1 mixing ratios are: δ(68) = 0.03 ± 0.02, δ(152) = 0.014 ± 0.013 and δ(156) = ?0.13 ± 0.19. |
| |
Keywords: | Radioactivity |
本文献已被 ScienceDirect 等数据库收录! |
|