DETERMINATION OF ELECTRONIC ENERGY LEVELS OF MOLECULES BY LOW ENERGY ELECTRON IMPACT SPECTROSCOPY

Thesis/Dissertation · Mon Jan 01 04:00:00 EST 1962

OSTI ID:4702144

Raff, L M

An electron impact spectrometer was designed, constructed, and employed to measure the energies of excited electronic states of molecules. Incident energies between 25 to 75 v were used, and the scattered electrons were electrostatically analyzed by a retardation method to obtain the spectra. Electron impact spectra for helium and argon were obtained for electron beams in the energy range from 25 to 50 ev. The levels agreed well with the optical determinations to within surface proces 0.2 ev. The spin-forbidden transitions were as prominent as the spin-allowed ones. The spectrum of molecular hydrogen was obtained with a 60 ev beam. Spin-forbidden transitions were again observed. The spectrum of ethylene at 40, 50, and 75 ev was Please delete abstract 25266

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-17-025266
• OSTI ID: 4702144
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ARGON
ATOMIC MODELS
CHEMISTRY
CROSS SECTIONS
ELECTRON BEAMS
ENERGY LEVELS
ETHYLENE
HELIUM
HYDROGEN
QUANTITATIVE ANALYSIS
SCATTERING
SPECTRA
SPECTROSCOPY
SPIN