
doi: 10.1007/bf01435748
The collisions Be+-He and Mg+-He have been studied from 10 to 75 keV by means of optical spectrometry. Relative excitation cross sections and polarizations have been measured at 40 keV forS throughG terms with principal quantum numbern up to 10. Within a Rydberg series the excitation cross sections are found to decrease monotonically withn, and the excited terms have in general a negative alignment.
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