K/LM+ internal-conversion ratios for pure E2 transitions in the decays of 152Eu and 192Ir |
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| Affiliation: | 1. Applied Mechanics Laboratory, Department of Engineering Mechanics and Center for Nano and Micro Mechanics, Tsinghua University, Beijing 100084, China;2. Institute of Biomechanics and Medical Engineering, Tsinghua University, Beijing 100084, China;3. Laboratory for Atomistic and Molecular Mechanics (LAMM), Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139, USA;4. Center for Computational Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139, USA;5. Applied Mechanics and Structure Safety Key Laboratory of Sichuan Province, School of Mechanics and Engineering, Southwest Jiaotong University, Chengdu 611756, China |
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| Abstract: | Measurements have been made with a magnetic β-ray spectrometer in order to determine the internal-conversion ratio R = K/LM+ for pure E2 transitions of 244.7 and 344.3 keV in the decay of 152Eu and of 205.8 and 316.5 keV in the decay of 192Ir. The results from several experimental runs for each transition are respectively, R = 2.92 ± 0.05, 3.43 ± 0.05, 1.05 ± 0.04 and 1.71 ± 0.05. A comparison has been made with previously published results as well as with theoretical values deduced for pure E2 multipolarity from the most recent tabulations of internal-conversion coefficients. |
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