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Dissociative ionization of O2 and N2 by electron impact — N+ and O+ kinetic energies and angular distributions

✍ Scribed by J.A.D. Stockdale; Liliana Deleanu

Publisher
Elsevier Science
Year
1973
Tongue
English
Weight
386 KB
Volume
22
Category
Article
ISSN
0009-2614

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✦ Synopsis

An apparatus containing cross nlolecular and pulsed electron beams has been used to obtain distributions in kinetic cncryy 2nd angle of fast ( ,> 0.5 cV) positive ions producrd through dissociative ionization of N2 and 0, by impact of 50 to 200 cV electrolls.

Four m;lin 0' ion groups arc observed with peak energies of 0.8. 2.0, 3.0, and 5.0 eV. T\vo main Nf groups peaking at 2.0 and 3.0 cV are seen. Angular distribu Lions of both N+ and O+ ions arc essentially isotropic for electron-bcnm-ion detcution angles from 30' to 1 IO'.

I. llltroduction

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* Accurate measurements ~C;LT the thresholds for these states may permit a test of rhis possibility.

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Electron-impact dissociation of H2O and
Electron-impact dissociation of H2O and D2O into metastable fragments
✍ R.S. Freund 📂 Article 📅 1971 🏛 Elsevier Science 🌐 English ⚖ 419 KB

Metastable H(2s), H2(c3&), and probably O(%') fragments are formed by electron-impact dissociation of H20. The fragment translational energies are given by time-of-flight measurements and their identities and electronic states are determined by approximate threshold energies and deuterium isotope sh