Publication detail

Pink Afterglow in Nitrogen - Hydrocarbon Mixtures

Krčma, F.

Original Title

Pink Afterglow in Nitrogen - Hydrocarbon Mixtures

English Title

Pink Afterglow in Nitrogen - Hydrocarbon Mixtures

Type

journal article - other

Language

en

Original Abstract

The effect of the nitrogen pink afterglow quenching by hydrocarbon traces is studied in the flowing afterglow regime. The Pyrex wall temperature around the observation point was varied between the ambient and liquid nitrogen temperature. The spectra of nitrogen first and second positive and first negative bands and CN violet and red systems were observed. The strong quenching of the vibrational populations of the nitrogen N2(B), N2(C) and N2+(B) states was observed and this effect increases with the decreasing wall temperature. The vibrational populations of CN(A) and CN(B) states are more or less independent of the hydrocarbon concentration at the ambient wall temperature, but they increase with the decreasing temperature. A simplified kinetic model of the processes at our experimental condition is presented, too.

English abstract

The effect of the nitrogen pink afterglow quenching by hydrocarbon traces is studied in the flowing afterglow regime. The Pyrex wall temperature around the observation point was varied between the ambient and liquid nitrogen temperature. The spectra of nitrogen first and second positive and first negative bands and CN violet and red systems were observed. The strong quenching of the vibrational populations of the nitrogen N2(B), N2(C) and N2+(B) states was observed and this effect increases with the decreasing wall temperature. The vibrational populations of CN(A) and CN(B) states are more or less independent of the hydrocarbon concentration at the ambient wall temperature, but they increase with the decreasing temperature. A simplified kinetic model of the processes at our experimental condition is presented, too.

Keywords

nitrogen afterglow, pink afterglow, CN chemiluminiscence, nitrogen kinetics

RIV year

2005

Released

01.10.2005

Publisher

Slovenská akadémia ved

Location

Bratislava

Pages from

453

Pages to

460

Pages count

8

BibTex


@article{BUT42436,
  author="František {Krčma}",
  title="Pink Afterglow in Nitrogen - Hydrocarbon Mixtures",
  annote="The effect of the nitrogen pink afterglow quenching by hydrocarbon traces is studied in the flowing afterglow regime. The Pyrex wall temperature around the observation point was varied between the ambient and liquid nitrogen temperature. The spectra of nitrogen first and second positive and first negative bands and CN violet and red systems were observed. The strong quenching of the vibrational populations of the nitrogen N2(B), N2(C) and N2+(B) states was observed and this effect increases with the decreasing wall temperature. The vibrational populations of CN(A) and CN(B) states are more or less independent of the hydrocarbon concentration at the ambient wall temperature, but they increase with the decreasing temperature. A simplified kinetic model of the processes at our experimental condition is presented, too.",
  address="Slovenská akadémia ved",
  chapter="42436",
  institution="Slovenská akadémia ved",
  journal="Acta Physica Slovaca",
  number="5",
  volume="55",
  year="2005",
  month="october",
  pages="453--460",
  publisher="Slovenská akadémia ved",
  type="journal article - other"
}