Progress in measurements of L‐subshell fluorescence, Coster‐Kronig and Auger yields

摘要: In the last decade significant improvements of experimental methods for measuring L‐subshell yields have been achieved. By detecting electron‐induced x‐ray fluorescence with a high‐resolution crystal‐spectrometer, ω1, ω2, and ω3 light medium heavy elements (28≤Z≤47) measured, most them first time. The Kα‐Lα‐coincidence method has carefully checked systematic errors. Recent measurements ω2 Coster‐Kronig yield f23 (Z≥54) by this substantially reduced relative uncertainties which in some cases are claimed to be below 1%. Furthermore, novel based on selective photoionization consecutive subshells using tuneable synchrotron radiation introduced is capable providing reliable values all decay yields, i.e., ω3, f12, f13, f23. So far, data Z=39, 47, 72–82 obtained method.