Angular distributions of differential X-ray production cross sections for Cu and Ta in photoionization

作者：Wang, Xing^*; Xu, Zhongfeng; Cheng, Lin

来源：Radiation Physics and Chemistry, 2016, 122: 24-27.

DOI：10.1016/j.radphyschem.2016.01.016

• X-ray
• Angular distribution
• Cross section
• Vacancy

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-alpha and K-beta for Cu and L-alpha, L-beta 1, L-beta 2, L-gamma 1 for Ta are derived at emission angles ranging from 100 degrees to 150 degrees. The ratio of K-beta and K-alpha, X-ray production cross sections, K-beta/K-alpha, is calculated for Cu and it is found to be consistent with other work even at different incident energy. While the ratios of L-alpha/L-beta, L-alpha/L-gamma 1 and L-beta/L-gamma 1 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.

• 出版日期2016-5
• 单位西安交通大学