Photoionization-Efficiency Curves. II. False and Genuine Structure

Abstract

Specific examples are given of artifacts in photoionization‐efficiency curves that result from the use of a discrete‐line light source. A comparative technique is used to distinguish this false structure from genuine structure marking energy levels above the ionization potential (I.P.). More accurate I.P.'s than previously available are given for HCl, CH₃Cl, CH₃NO₂, CH₃CN, C₂H₄, C₃H₆, C₂H₂ and new values for CH₄, CD₄, C₂H₆, C₃H₈.