Experimental Study of Single-Electron Detachment Cross Sections of Cu^- in Collision with He

The single-electron detachment cross-sections of Cu^- in collision with He have been measured in the range of 10-30keV by a growth rate method. The typical value of the cross section is 7.63 x 10^-16cm² at an energy 20keV. The experimental uncertainty of the results is about ±8%.