TY - GEN
T1 - The effect of ambient pressure on laser-induced plasmas in air
AU - Glumac, Nick
AU - Elliott, Greg
N1 - The authors would like to thank AFOSR with Dr. John Schmisseur for funding this work on energy deposition utilizing laser-induced optical breakdown (FA9550-04-0177). Any opinions, findings and conclusions or recommendations expressed in the material are those of the authors and do not necessarily reflect the views of AFOSR. Additionally we would like to thank our colleagues Prof. Doyle Knight, Prof. Graham Candler, Dr. Hong Yan, and Ramnath Kandala for their discussions and input regarding this work.
PY - 2006
Y1 - 2006
N2 - A detailed investigation of the effect of ambient pressure in the range of 0.1 atm to 1.0 atm on the size, temperature, electron number density, and fraction of laser energy absorbed in a laser-induced plasma in air has been conducted. As pressure is reduced the size of the plasma, its electron number density, its peak emission intensity, and the fraction of incident laser energy that is absorbed are all found to decrease significantly. The temporal temperature profile in the plasma and the fraction of the absorbed laser energy that is converted to thermal energy in the plasma remain constant, at least down to 0.2 atm.
AB - A detailed investigation of the effect of ambient pressure in the range of 0.1 atm to 1.0 atm on the size, temperature, electron number density, and fraction of laser energy absorbed in a laser-induced plasma in air has been conducted. As pressure is reduced the size of the plasma, its electron number density, its peak emission intensity, and the fraction of incident laser energy that is absorbed are all found to decrease significantly. The temporal temperature profile in the plasma and the fraction of the absorbed laser energy that is converted to thermal energy in the plasma remain constant, at least down to 0.2 atm.
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M3 - Conference contribution
AN - SCOPUS:34250813739
SN - 1563478072
SN - 9781563478079
T3 - Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting
SP - 4676
EP - 4686
BT - Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting
T2 - 44th AIAA Aerospace Sciences Meeting 2006
Y2 - 9 January 2006 through 12 January 2006
ER -