@inproceedings{35c3d1221b3446ffa7d0ef6dd5af33e5,
title = "Measurements of electron numbers in femtosecond laser induced plasma using rayleigh microwave scattering",
abstract = "In this work we report direct measurements of absolute plasma electron numbers generated at multiphoton ionization (MPI) of air and sub we precisely determine ionization rate and cross-section of eight-photon ionization of oxygen molecule by 800 nm photons, σ8=(3.32± 0.3).10-130 W-8m16s-1. Subsequently MPI of O2, N2 and Ar was studied at atmospheric pressure. We observed that ionization rate of O2 is much greater than that of N2. We found that ionization rate and cross-section is same for N2 and O2. Method is based on the absolute measurement of electron number created by MPI using elastic scattering of microwaves off the plasma volume in Rayleigh regime and establishes a general approach to directly measure and tabulate basic constants of the MPI process for various gases and photon energies.",
author = "A. Sharma and M. Slipchenko and X. Wang and Rehman, {K. A.} and A. Shashurin and Shneider, {M. N.}",
note = "Publisher Copyright: {\textcopyright} 2018, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.; AIAA Aerospace Sciences Meeting, 2018 ; Conference date: 08-01-2018 Through 12-01-2018",
year = "2018",
doi = "10.2514/6.2018-0177",
language = "English (US)",
isbn = "9781624105241",
series = "AIAA Aerospace Sciences Meeting, 2018",
publisher = "American Institute of Aeronautics and Astronautics Inc, AIAA",
booktitle = "AIAA Aerospace Sciences Meeting",
}