Sub-nanosecond delays of light emitted by streamer in atmospheric pressure air: Analysis of N2( C3?u) and N2+(B2? u +) emissions and fundamental streamer structure

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F15%3A00443590" target="_blank" >RIV/61389021:_____/15:00443590 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1063/1.4913215" target="_blank" >http://dx.doi.org/10.1063/1.4913215</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/1.4913215" target="_blank" >10.1063/1.4913215</a>

Result language
angličtina
Original language name
Sub-nanosecond delays of light emitted by streamer in atmospheric pressure air: Analysis of N2( C3?u) and N2+(B2? u +) emissions and fundamental streamer structure
Original language description
Theoretical analysis of ultra-short phenomena occurring during the positive streamer propagation in atmospheric pressure air is presented. Motivated by experimental results obtained with tens-of-picoseconds and tens-of-microns precision, it is shown thatwhen the streamer head passes a spatial coordinate, emission maxima from N2 and N2+ radiative states follow with different delays. These different delays are caused by differences in the dynamics of populating the radiative states, due to different excitation and quenching rates. Associating the position of the streamer head with the maximum value of the self-enhanced electric field, a delay of 160 ps was experimentally found for the peak emission of the first negative system of N2+. A delay dilatationwas observed experimentally on early-stage streamers and the general mechanism of this phenomenon is clarified theoretically. In the case of the second positive system of N2, the delay can reach as much as 400 ps.
Czech name
—
Czech description
—

Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BL - Plasma physics and discharge through gases
OECD FORD branch
—

Project
<a href="/en/project/GAP205%2F12%2F1709" target="_blank" >GAP205/12/1709: Advanced optical diagnostics of non-equilibrium micro-discharges</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)