Table of Contents
Laser Chemistry
Volume 7 (1987), Issue 2-4, Pages 129-139

High Resolution Photoionization Spectrum of HBr Measured With Frequency Tripled Laser Radiation

1The Institute of Physical and Chemical Research, Saitama, Wako 351-01, Japan
2Faculty of Science, Science University of Tokyo, Kagurazaka, Tokyo 162, Japan

Copyright © 1987 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The photoionization spectrum of HBr around the first ionization limit was measured at resolution of up to 5 x 10−4 nm. The ionizing vacuum ultraviolet radiation was generated by frequency tripling of the second harmonic output of a dye laser. Three sets of Rydberg series, each converging to the ground state (2Π3/2) of HBr+, were observed on the longer wavelength side of the ionization limit. By extrapolation of the Rydberg series, the ionization potential of HBr was determined to be 11.666 ± 0.001 eV.