Electron impact spectroscopy of silane and germane

Journal Article · Sun Mar 31 23:00:00 EST 1985 · J. Chem. Phys.; (United States)

OSTI ID:5951280

Dillon, M A; Wang, R; Wang, Z; Spence, D

Electron impact spectra of silane and germane have been recorded using electrons of 200 eV incidence at scattering angles of approx.2/sup 0/--9/sup 0/. The range of energy losses covers the entire region of single electron excitation from the valence shell. In the bound state spectrum evidence is presented supporting the existence of two valence transitions in addition to anticipated s, p, and d Rydberg transitions. The 9/sup 0/ spectra reveal much structural detail in the approx.4 eV energy range preceding the /sup 2/A/sub 1/ ion state. The most prominent band consists of a superposition of an optically allowed valence excitation and a symmetry forbidden Rydberg transition. The remaining peaks may be members of vibrational progressions belonging to either (d(t/sub 2/), a/sub 1/), (p, a/sub 1/) reverse arrow (a/sub 1/)/sup 2/ dipole allowed or (d(e), a/sub 1/), (s,a/sub 1/) reverse arrow (a/sub 1/)/sup 2/ dipole forbidden channels. Of these two possibilities the evidence presented here favors the latter choice.

• Research Organization: Argonne National Laboratory, Argonne, Illinois 60439
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5951280
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 82:7; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
COLLISIONS
ELECTRON COLLISIONS
ELECTRON-MOLECULE COLLISIONS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXCITED STATES
FORBIDDEN TRANSITIONS
GERMANIUM COMPOUNDS
GERMANIUM HYDRIDES
HYDRIDES
HYDROGEN COMPOUNDS
IONIZATION
MOLECULE COLLISIONS
ORGANIC COMPOUNDS
ORGANIC SILICON COMPOUNDS
RYDBERG STATES
SILANES
SILICON COMPOUNDS