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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BL - Fyzika plasmatu a výboje v plynech

OECD FORD obor

—

Projekt

<a href="/cs/project/GAP205%2F12%2F1709" target="_blank" >GAP205/12/1709: Pokročilé optické diagnostiky nerovnovážných mikro-výbojů</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Applied Physics

ISSN

0021-8979

e-ISSN

—

Svazek periodika

117

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

13

Strana od-do

073302-073302

Kód UT WoS článku

000351130900005

EID výsledku v databázi Scopus

2-s2.0-84923326631