L-SHELL IONIZATION MEASUREMENT OF TUNGSTEN BY ELECTRON IMPACT

• 来源期刊: 中国物理(英文版)
• 关键词: electron impact L-shell ionization tungsten cross section
• 年，卷（期）: 2000,（10）
• 页码范围: 749-752
• 页数: 4页
• 语种: 英文

摘要

L-shell partial production cross sections of Lα- , Lβ-, Lγ- rays by electron impact were measured by observing the counts of X-ray from impacted thin tungsten target. Total production cross sections and mean ionization cross sections were deduced from these measured results. The electron beam energy range was from 11 to 36 keV. Tungsten was sputtered onto a carbon backing to reduce bremsstrahlung of the backing. The effect of electrons reflected by the backing has been corrected. Comparison with two theoretical calculations has performed. The experimental results agree rather well with the theoretical predications.