Pre-ionization controlled laser plasma formation for ignition applications

A. P. Yalin, F. Loccisano, S. Joshi, Z. Zhang, M. Shneider

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations


We present initial modeling and experimental results on the use of pre-ionizing pulses to enhance and control laser plasma formation in gases. The approaches are based on use of an initial pulse to achieve pre-ionization with a second pulse for generation of additional ionization and energy addition. Experimental results using a pair of nanosecond duration 1064 nm pulses are presented. In the configuration studied, the first pulse provides breakdown which also promotes additional energy deposition by the second pulse. Maximum energy deposition occurs when the inter-pulse separation is approximately 20 - 40 ns. Modeling results examine a case where the first pulse provides pre-ionization (but not breakdown) and shows that in the presence of pre-ionization, the effect of a second pulse is to increase ionization and heat the gas. Non-intrusive microwave diagnostics for ionization measurements are also presented.

Original languageEnglish (US)
Title of host publication41st AIAA Plasmadynamics and Lasers Conference
StatePublished - 2010
Event41st AIAA Plasmadynamics and Lasers Conference - Chicago, IL, United States
Duration: Jun 28 2010Jul 1 2010

Publication series

Name41st AIAA Plasmadynamics and Lasers Conference


Conference41st AIAA Plasmadynamics and Lasers Conference
Country/TerritoryUnited States
CityChicago, IL

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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