# Photoionization rates of oxygen and nitrogen at 800 nm measured by Thomson coherent microwave scattering

“Photoionization rates of oxygen and nitrogen at 800 nm measured by Thomson coherent microwave scattering” (2026), by Kenneth B. Reindersma et al. Physics and Astronomy research paper. Original abstract below, unchanged. A free PDF is available.

- Authors: Kenneth B. Reindersma, M. Malaussena, S. Anantaram, K. Patel, V. Kumar, N. Babusis, M. Slipchenko, A. Shashurin
- Published: November 4, 2026
- Field: Physics and Astronomy
- Free PDF: https://arxiv.org/pdf/2611.06729

## Abstract

In this study, we report on the use of Thomson coherent microwave scattering (CMS) to characterize photoionization rates in oxygen and nitrogen at 800 nm over a range spanning approximately three orders of magnitude, from about mid-10⁹ s⁻¹ range to the to mid-10¹² s⁻¹ range, corresponding to laser intensities in the vicinity of 10¹³-10¹⁴ W/cm², a range of significant practical relevance to filamentation physics.

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