X-ray emission of Xe30+ ion beam impacting on Au target

作者：Zhang, Xiaoan; Zhao, Yongtao^*; Hoffmann, Dieter H. H.; Yang, Zhihu; Chen, Ximeng; Xu, Zhongfeng; Li, Fuli; Xiao, Guoqing

来源：Laser and Particle Beams, 2011, 29(2): 265-268.

DOI：10.1017/S0263034611000267

• Classical Coulomb over the Barrier Mode
• ECR-ion source
• Heavy ion beams
• Rydberg state
• X-rays

X-ray emission from Xe30+ ions at 350-600 keV impacting on an Au target was investigated at the Heavy Ion Research Facility at Lanzhou. Characteristic X-rays of Xe ions at energy of about 1.65 keV were observed. This X-ray emission is induced by the decay of very high Rydberg states of Xe ions. It was also found that the yield of such characteristic X-rays is decreasing with increasing the projectile kinetic energy. Simultaneously, the yield of the characteristic Au X-rays from the M shell increases also. These phenomena are qualitatively analyzed with the classical Coulomb over the Barrier Mode (COBM) for highly charged ions interacting with solid state surfaces.

• 出版日期2011-6
• 单位兰州大学; 中国科学院近代物理研究所; 咸阳师范学院; 西安交通大学