MASS-SPECTROMETER STUDIES OF PHOTOIONIZATION OF MOLECULES AND DECAY OF EXCITED MOLECULAR IONS

Journal Article · Thu Aug 01 04:00:00 EDT 1963 · Izvestiya Akademii Nauk, Seriya Fizicheskaya (U.S.S.R.) For English translation see Bull. Acad. Sci. USSR, Phys. Ser. (Engl. Transl.)

OSTI ID:4175244

Akopyan, M E; Vilesov, F I; Terenin, A N

Photoionization of hydrazine and its alkyl derivatives, methyl, 1,1 - dimethyl, 1,1 -diethyl, 1 -methyl, 1 -n-butyl, and 1,1-di-n-butyl hydrazine, was studied with a mass spectrometer. The results showed that ionization plays a significant role in dissociation of the alkyl derivatives and a predominant role in the case of the most complex molecules. In hydrazine, ionization by removal of a hydrogen atom was the only process discovered. Ions with mass numbers of 1 or 2, smaller than the mass number of molecular ions, were observed in the mass spectra of all hydrazines studied. As the complexity of the molecule increased, the role of dissociation with breaking of the N---C and C --C bonds increased. The data indicated that the O--O transfer corresponding to an adiabatic ionization potential is not vertical; thus the removal of an electron in ionization results in a change in the internuclear distances in the molecule. The photoionization yield near the threshold was small, and increased slowly with increase in photon energy. Curves of the ionization data for the compounds studied and tables of the energies of breaking of bonds and of ionization thresholds are given. (TTT)

• Research Organization: Leningrad State Univ.
• NSA Number: NSA-18-000280
• OSTI ID: 4175244
• Journal Information: Izvestiya Akademii Nauk, Seriya Fizicheskaya (U.S.S.R.) For English translation see Bull. Acad. Sci. USSR, Phys. Ser. (Engl. Transl.), Journal Name: Izvestiya Akademii Nauk, Seriya Fizicheskaya (U.S.S.R.) For English translation see Bull. Acad. Sci. USSR, Phys. Ser. (Engl. Transl.) Vol. Vol: 27; ISSN IANFA
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

BINDING ENERGY
BUTYL RADICALS
CHEMISTRY
CONVERSION
DECAY
DECONTAMINATION
DIAGRAMS
ETHYL RADICALS
EXCITATION
FUEL ELEMENTS
FUELS
HYDRAZINE
IONIZATION
IRRADIATION
JACKETS
MASS SPECTROMETERS
MEASURED VALUES
METHYL RADICALS
PHOTOIONIZATION
PHOTONS
PREPARATION
SEPARATION PROCESSES
SOLUBILITY
SOLUTIONS
SOLVENT EXTRACTION
STORAGE