Research Papers in Physics and Astronomy

 

Date of this Version

1965

Comments

Published in Physical Review Letters 15, 580 - 581 (1965)
©1965 The American Physical Society. Used by permission.
URL:http://link.aps.org/doi/10.1103/PhysRevLett.15.580
DOI: 10.1103/PhysRevLett.15.580

Abstract

We recently reported the excitation of autoionizing states in helium by positive-ion bombardment and their subsequent observation as fine structure in the energy spectrum of the emitted electrons. With somewhat increased resolution we have now observed additional levels in helium including parts of two series not previously reported.

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