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The generalized oscillator strengths for the 61S0→61P1 transition in mercury have been determined at 300-, 400-, and 500-eV electron kinetic energy. Extrapolation to zero momentum change gives f0 = 1.11 ± 0.10. This result is in very good agreement with the optical oscillator strength, f0 = 1.18 ± 0.07, which was determined by Lurio using the zero-field level crossing method.
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Skerbele et al. (1970) studied this question.
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