Electron Excitation of Free-Free Radiation in Argon and of Vibrational States of H2, D2 and O2.
Final rept. Oct 81-Sep 82,
NATIONAL BUREAU OF STANDARDS BOULDER CO QUANTUM PHYSICS DIV
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Final measurements are reported for the production of free-free emission by low energy electrons in argon. Absolute intensity measurements were made at 500, 650 and 1300 nm. The electric field to gas density ratio was varied from 0.25 to 10 x 10 to the minus 21st power Vm2 corresponding to mean electron energies from 1.2 to 5.4 eV. The experimental results agree well with theoretical values calculated from cross sections for momentum transfer collisions determined by other techniques. Measurements of vibrational excitation of 02, H2 and D2 were initiated using the collisional transfer of energy from a homonuclear molecule to a heteronuclear molecule, i.e. CS2 for 02 and C02 or C0 for H2 and D2. Signals were observed using D2 and C02.
- Radiation and Nuclear Chemistry
- Particle Accelerators
- Nuclear Physics and Elementary Particle Physics