Abstract
The decay of Sm 153 to Eu 153 has been investigated by means of an iron yoke double focusing spectrometer, gamma-gamma and electron-gamma coincidence spectrometers. A precision measurement of the 69.672 keV line has been performed with an iron-free double focusing spectrometer. Internal conversion lines and photo-electric lines of the following transitions have been measured and their energies determined with a precision of a few parts in 10 4: 69.672; 75.34; 83.37; 89.47; 97.45; 103.174; ≈ 104.8; 172.85 keV. Conversion electron and gamma intensities, multipolarities, mixing ratios and conversion coefficients are given. Using the photo-electron method, 16 other weak transitions were measured with a resolution of 0.5% to 0.25% : 151.5; 411.5; 424.3; 437.7; 449.7; 463.6; 521.3; 531.4; 533.2; 555.2; 578.6; 596.9; 603.1; 609.1; 636.0 keV. Difficulties in the computation of intensities of low energy gamma rays from external conversion measurements are briefly discussed. A decay scheme is proposed on the basis of the energy data and a quantitative analysis of the gamma-gamma and electron-gamma coincidences. Excited levels at the following energies have been established: 83.37; 97.45; 103.17; 172.85; (191.4); 634.6; 636.4; (694.3); (706.4) keV.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
