Angular distributions of differential X-ray production cross sections for Cu and Ta in photoionization
2016
Abstract The characteristic K-shell X-ray emission of Cu and L X-rays of Ta in photoionization has been measured at excitation energy of 15.9 keV. The differential X-ray production cross sections of K α and K β for Cu and L α , L β1 , L β2 , L γ1 for Ta are derived at emission angles ranging from 100° to 150°. The ratio of K β and K α X-ray production cross sections, K β /K α , is calculated for Cu and it is found to be consistent with other work even at different incident energy. While the ratios of L α /L β , L α /L γ1 and L β /L γ1 for Ta are found to be different with other results at different excitation energy. The reasons giving rise to this discrepancy are clarified with thorough analysis.
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