The continuous and discrete molecular orbital x-ray bands from Xeq+ (12≤q≤29) +Zn collisions

Abstract

In this paper, the x-ray emissions are measured by the interaction of 1500–3500 keV Xe^q+ (q = 12, 15, 17, 19, 21, 23, 26 and 29) ions with Zn target. When q < 29, we observe Ll, Lα, Lβ₁, Lβ₂ and Lγ characteristic x-rays from Xe^q+ ions and a broad M-shell molecular orbital (MO) x-ray band from the transient quasi-molecular levels. It is found that their yields quickly increase with different rates as the incident energy increases. Besides, the widths of the broad MO x-ray bands are about 0.9–1.32 keV over the energy range studied and are proportional to v^1/2 (v = projectile velocity). Most remarkably, when the projectile charge state is 29, the broad x-ray band separates into several narrow discrete spectra, which was never observed before in this field.