A simplified method for absolute MPI cross-section measurements. Application to three-photon non-resonant ionization of Xe at 266 nm

Israel Schechter*, Hartmut Schröder, Karl L. Kompa

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

A simple method to measure absolute MPI cross sections based on a direct measurement of the ions, produced out of the focal region, is described. The method avoids the problem of the complicated effective-volume evaluation at the focus of a laser beam, difficulties in estimation of the absolute number of ions, as well as the problems arising due to measurements in the saturation regime. The method is best for high cross-section measurements; however, in order to demonstrate its feasibility, it has been applied to the study of non-resonant MPI of Xe. This three-photon ionization cross section, measured for the first time at the fourth harmonic of a mode-locked Nd:YAG laser (266 nm), is found to be (1.1 ± 0.6) × 10-82 cm6 s2.

Original languageEnglish
Pages (from-to)128-134
Number of pages7
JournalChemical Physics Letters
Volume194
Issue number1-2
DOIs
StatePublished - 19 Jun 1992
Externally publishedYes

Fingerprint

Dive into the research topics of 'A simplified method for absolute MPI cross-section measurements. Application to three-photon non-resonant ionization of Xe at 266 nm'. Together they form a unique fingerprint.

Cite this