Tables of Experimental Values of X-Ray Fluorescence and Coster-Kronig Yields for the K-, L-, and M-Shells*

The fluorescence yield ¹ of an atomic shell or subshell is defined as the probability that a vacancy in that shell or subshell is filled through a radiative transition. Thus, for a sample of many atoms, the fluorescence yield of a shell of a singly-ionized atom is equal to the number of photons emitted when vacancies in the shell are filled, divided by the number of primary vacancies in the shell. The application of this definition to the K-shell of an atom, normally containing two s_1/2 electrons, is straightforward. The K-shell fluorescence yield is (1) ω κ = I κ / n κ https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780203742433/53e9912e-dfc3-42b1-91b1-4eaf447a0f76/content/eq387.tif"/>