氧离子轰击引起钽的L壳层X射线发射截面的研究

L-shell X-ray emission cross section of tantalum by 20—45 MeV O^(5+) bombardment

在北京原子能研究院串联加速器上,利用20—45MeV的O5+轰击Ta靶,研究靶的L壳层X射线.给出了Ta的L壳层各亚壳层Ll,Lα,Lβ和LγX射线发射截面的比值,并且与ECPSSR理论计算做了比较.结果表明,在误差范围内比值σ(Ll)/σ(Lα)、σ(Lβ)/σ(Lα)和σ(Lγ)/σ(Lα)的实验结果与理论计算符合得较好.

With 20—45 MeV O5＋ ion bombardment we investigate L-shell X-ray emission processes on Ta film at HI-13 tandem accelerator in the Chinese Institute of Atomic Energy （CIAE）. The ratios of X-ray emission cross section： σ（Lβ）/σ（Lα）,σ（Lγ）/σ（Lα）, and σ（Ll）/σ（Lα） are obtained. The results are compared with the predictions by the ECPSSR theory. Reasonable agreement between the ECPSSR theory and the experiment is obtained.