Collinear dual-pulse laser optical breakdown and energy deposition

A Alberti, A Munafò, C Pantano… - Journal of Physics D …, 2020 - iopscience.iop.org
A non-equilibrium model for laser-generated plasmas is used to represent collinear dual
nano-second-pulse interactions. In the specific case considered, the breakdown is initiated …

Gas density evolution and recirculation after a nanosecond pulsed discharge: experimental and computational results

S Adams, C Dumitrache, C Murray - Experiments in Fluids, 2023 - Springer
Gas recirculation effects have been experimentally measured and modeled following a
nanosecond pulse high-voltage discharge across a pin-to-pin quiescent air gap …

[HTML][HTML] Non-equilibrium plasma generation via nano-second multi-mode laser pulses

A Alberti, A Munafò, M Nishihara, C Pantano… - Journal of Applied …, 2022 - pubs.aip.org
The formation and growth of plasma kernels generated via nano-second mode-beating laser
pulses is investigated here via a non-equilibrium self-consistent computational model …

Resonant dual-pulse laser ignition technique based on oxygen REMPI pre-ionization

C Dumitrache, C Butte, A Yalin - Scientific Reports, 2020 - nature.com
This contribution investigates a novel laser ignition method based on a dual-pulse resonant
pre-ionization scheme. The first laser pulse efficiently creates initial gas ionization (seed …

Insight into the evolution of laser-induced plasma during successive deposition of laser energy

AP Singh, UP Padhi, R Joarder - Journal of Applied Physics, 2022 - pubs.aip.org
The interaction of high-temperature plasma with the matter has several potential
applications. This study generated laser-induced plasma through single and successive …

Nanosecond laser pulse modulation using seed electrons from cascade ionization induced by inverse-Bremsstrahlung photon absorption

Y Park, K Kim, S Kim, CD Carter, H Do - Optics Express, 2022 - opg.optica.org
Nanosecond (ns) laser pulses are modulated by seeding electrons on the laser beam path.
The seed-electrons are from auxiliary ns-laser-induced breakdown (ALIB), and the ALIB is …

Single and dual-pulse laser ignition of methane-air and hydrogen-air mixtures

C Butte, P Lokini, C Dumitrache, AP Yalin - AIAA Scitech 2020 Forum, 2020 - arc.aiaa.org
This investigation examines ignition characteristics of various fuel-air mixtures using both
single and dual-pulse laser plasmas building off our previous work. A single pulse laser …

Gas dynamic regimes observed in dual-pulse laser ignition

C Dumitrache, AP Yalin - International Journal of Heat and Mass Transfer, 2020 - Elsevier
A numerical study of the gas dynamics induced by a dual-pulse laser pre-ionization plasma
used in laser ignition applications is presented herein. Past experimental observations have …

Dual-pulse laser ignition using oxygen REMPI preionization

C Butte, C Dumitrache, AP Yalin - AIAA Aviation 2019 Forum, 2019 - arc.aiaa.org
We expand upon our past work in preionization dual-pulse laser ignition to examine the
possibility of using resonant enhanced multiphoton ionization (REMPI) of oxygen for the first …

Investigation of dual-pulse laser plasmas for ignition of fuel-air mixtures

CV Butte - 2020 - search.proquest.com
Progress towards more complex combustion applications has demanded more advanced
and versatile ignition techniques. One attempt to address some of the concerns associated …