TY - GEN
T1 - Direct measurement of electron numbers in multiphoton ionization of various gases
AU - Sharma, Animesh
AU - Slipchenko, Mikhail
AU - Rehman, Kazi Arafat
AU - Shashurin, Alexey
AU - Shneider, Mikhail N.
N1 - Publisher Copyright:
© 2018, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
PY - 2018
Y1 - 2018
N2 - In this work we present direct measurement of electron numbers in plasma filament produced by femtosecond laser pulse by multiphoton ionization (MPI) of air, O2 and Xe at atmospheric pressure. We show that at high laser beam intensities, Kerr non-linearity has significant effect on spatial laser intensity distribution which results in deviation from Gaussian beam. At low intensities, pure MPI regime, we determine electron density at the center of the plasma filament for air and O2. This method is based on measurement of absolute number of electrons by elastic scattering of microwaves by the plasma filament.
AB - In this work we present direct measurement of electron numbers in plasma filament produced by femtosecond laser pulse by multiphoton ionization (MPI) of air, O2 and Xe at atmospheric pressure. We show that at high laser beam intensities, Kerr non-linearity has significant effect on spatial laser intensity distribution which results in deviation from Gaussian beam. At low intensities, pure MPI regime, we determine electron density at the center of the plasma filament for air and O2. This method is based on measurement of absolute number of electrons by elastic scattering of microwaves by the plasma filament.
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U2 - 10.2514/6.2018-3433
DO - 10.2514/6.2018-3433
M3 - Conference contribution
AN - SCOPUS:85051657410
SN - 9781624105494
T3 - 2018 Plasmadynamics and Lasers Conference
BT - 2018 Plasmadynamics and Lasers Conference
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - 49th AIAA Plasmadynamics and Lasers Conference, 2018
Y2 - 25 June 2018 through 29 June 2018
ER -