On the Cross Sections for Excitation of the Europium Atom by Slow Electrons

摘要

Excitation of the europium atom by slow electrons was studied using the method of extended crossing beams. The measured absolute values of cross sections agree well with the theoretical data and exceed the previous experimental results by a factor of 22-285. The behavior of the optical excitation functions is approximately the same as in the previous experiments and differs from the theoretical predictions by a slower decrease in cross sections in the region of high electron energies.