Cross section for the production of N2 + (X2Σg +) ions by electron impact on N2

N. Abramzon, R. B. Siegel, K. Becker

Research output: Contribution to journalArticle

Abstract

A combination of electron scattering and laser-induced fluorescence (LIF) techniques has been employed in the direct experimental determination of the N2 + (X2Σg +) ionizati on cross section as a function of electron energy from threshold to 200 eV. Electron impact on N2 produces N2 + ground-state ions that are detected by pumping the X 2Σg + → B 2Σu + + (0,0) vibrational transition at 391 nm with a tunable dye laser and detecting the subsequent LIF of the B 2Σu + → X 2Σg + (0,1) vibrational transition at 428 nm. LlF spectra obtained at different electron energies yield the relative N2 +(X) cross section which is put on an absolute scale by normalization to the absolute cross section value of Doering and Yang [J. Geophys. Res. 102 (1996) 9683] obtained from electron-electron coincidence(e,2e) experiments at 100 eV.

Original languageEnglish (US)
Pages (from-to)147-153
Number of pages7
JournalInternational Journal of Mass Spectrometry
Volume188
Issue number3
StatePublished - 1999

Fingerprint

electron impact
Ions
laser induced fluorescence
Electrons
cross sections
electron energy
ions
tunable lasers
dye lasers
Fluorescence
electron scattering
pumping
electrons
Electron scattering
Dye lasers
Lasers
ground state
thresholds
Ground state
Experiments

Keywords

  • Cross sections
  • Electron-impact ionization
  • Laser-induced fluorescence

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy

Cite this

Cross section for the production of N2 + (X2Σg +) ions by electron impact on N2. / Abramzon, N.; Siegel, R. B.; Becker, K.

In: International Journal of Mass Spectrometry, Vol. 188, No. 3, 1999, p. 147-153.

Research output: Contribution to journalArticle

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N2 - A combination of electron scattering and laser-induced fluorescence (LIF) techniques has been employed in the direct experimental determination of the N2 + (X2Σg +) ionizati on cross section as a function of electron energy from threshold to 200 eV. Electron impact on N2 produces N2 + ground-state ions that are detected by pumping the X 2Σg + → B 2Σu + + (0,0) vibrational transition at 391 nm with a tunable dye laser and detecting the subsequent LIF of the B 2Σu + → X 2Σg + (0,1) vibrational transition at 428 nm. LlF spectra obtained at different electron energies yield the relative N2 +(X) cross section which is put on an absolute scale by normalization to the absolute cross section value of Doering and Yang [J. Geophys. Res. 102 (1996) 9683] obtained from electron-electron coincidence(e,2e) experiments at 100 eV.

AB - A combination of electron scattering and laser-induced fluorescence (LIF) techniques has been employed in the direct experimental determination of the N2 + (X2Σg +) ionizati on cross section as a function of electron energy from threshold to 200 eV. Electron impact on N2 produces N2 + ground-state ions that are detected by pumping the X 2Σg + → B 2Σu + + (0,0) vibrational transition at 391 nm with a tunable dye laser and detecting the subsequent LIF of the B 2Σu + → X 2Σg + (0,1) vibrational transition at 428 nm. LlF spectra obtained at different electron energies yield the relative N2 +(X) cross section which is put on an absolute scale by normalization to the absolute cross section value of Doering and Yang [J. Geophys. Res. 102 (1996) 9683] obtained from electron-electron coincidence(e,2e) experiments at 100 eV.

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