TY - GEN
T1 - Capillary nanosecond discharges as a tool for the measurement of quenching coefficients at high specific energy deposition
AU - Lepikhin, Nikita D.
AU - Klochko, Andrei V.
AU - Edwards, Matthew R.
AU - Popov, Nikolay A.
AU - Starikovskaia, Svetlana M.
N1 - Publisher Copyright:
© 2015 by Nikita D. Lepikhin, Andrei V. Klochko, Matthew R. Edwards, Nikolay A. Popov and Svetlana M. Starikovskaia.
PY - 2015/1/1
Y1 - 2015/1/1
N2 - A nanosecond repetitively pulsed discharge initiated in a quartz capillary tube filled with a flowing N2:O2 mixture, is used as a platform to investigate the depopulation mechanisms of the N2(C3Πu, v = 0) state of molecular nitrogen, at conditions of high specific energy deposition. The effect of a variable energy deposition is investigated by varying the tube diameter, and the total transmitted current. Upon increase of the specific deposited energy, it is found that, in pure nitrogen, an additional collisional depopulation mechanism appears, and dominates radiative decay and quenching by ground state N2 molecules, when the specific deposited energy is large enough. The possible nature of this process is discussed.
AB - A nanosecond repetitively pulsed discharge initiated in a quartz capillary tube filled with a flowing N2:O2 mixture, is used as a platform to investigate the depopulation mechanisms of the N2(C3Πu, v = 0) state of molecular nitrogen, at conditions of high specific energy deposition. The effect of a variable energy deposition is investigated by varying the tube diameter, and the total transmitted current. Upon increase of the specific deposited energy, it is found that, in pure nitrogen, an additional collisional depopulation mechanism appears, and dominates radiative decay and quenching by ground state N2 molecules, when the specific deposited energy is large enough. The possible nature of this process is discussed.
UR - https://www.scopus.com/pages/publications/84980319841
U2 - 10.2514/6.2015-0937
DO - 10.2514/6.2015-0937
M3 - Conference contribution
AN - SCOPUS:84980319841
SN - 9781624103438
T3 - 53rd AIAA Aerospace Sciences Meeting
BT - 53rd AIAA Aerospace Sciences Meeting
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - 53rd AIAA Aerospace Sciences Meeting, 2015
Y2 - 5 January 2015 through 9 January 2015
ER -