CSR上154 MeV/u C6+离子束分别入射Ti、V、Fe、Ni和Zn靶的X射线辐射

用电子冷却存储环(CSR)提供的能量为165 MeV/u的高能C6+脉冲束分别与Ti、V、Fe、Ni和Zn靶表面相互作用，测量了各靶辐射的K壳层X射线。结果表明，实验探测到各靶的K和K X射线均向高能区发生了不同程度的移动。经分析，X射线发生频移是由靶原子外壳层发生多电离引起的。通过计算各靶K壳层X射线的产生截面，发现该截面随原子序数的增加而减小。将各靶K-X射线产生截面的实验值分别与两体碰撞近似、平面波恩近似和ECPSSR理论值比较，发现现有理论与实验值存在偏差，要准确描述实验结果需要进一步修正。

X ray emission from154 MeV/u C6+ ion beams of CSR impacting on Ti, V, Fe, Ni and Zn targets

The K shell x-rays of Ti, V, Fe, Ni and Zn targets induced by the 165 MeV/u C6+ ion beam which is provided by Electron Cooling Storage Ring(CSR) are measured. The results show that the experimental energy values of K and K X-rays which are not significantly associated with the target atomic number shift to high energy side compared to the theoretical value. It is shown that the energy shifting of X ray is caused by the multiple-ionization of the inner shell of the target atom. The K X-ray production cross section of the target decreases with the increase of atomic number. The experimental values of the K-shell X-ray production cross section of each target are compared with the binary encounter approximation(BEA), the plane-wave Bron approximation(PWBA)and the ECPSSR theoretical predictions. It is found that there is a deviation between the existing theoretical and the experimental values, and further correction is needed to accurately describe the experimental results.