Electronic structure of Cl/sub 2/ from 5 to 15 eV by electron energy loss spectroscopy

Journal Article · Sat Mar 31 23:00:00 EST 1984 · J. Chem. Phys.; (United States)

OSTI ID:5013172

Spence, D; Huebner, R H; Tanaka, H; Dillon, M A; Wang, R

We have obtained the first high resolution electron energy loss spectra for molecular chlorine over the extended energy-loss range 5.5--14.5 eV at scattering angles between 3/sup 0/ and 9/sup 0/ for an incident electron energy of 200 eV. Spectra obtained at small scattering angles correspond closely to optical absorption spectra, the most prominent features arising from excitation of optically allowed Rydberg states, with other smaller features due to excitation of forbidden states. Our larger angle spectra show additional structures corresponding to excitation of other forbidden states and reveal a previously unobserved band. These angular scattering measurements explain some apparent differences between synchrotron radiation photoabsorption and threshold electron impact excitation spectra, and indicate some structures in the latter measurements to be mislabeled due to the presence of ''hot bands.''

• Research Organization: Argonne National Laboratory, Argonne, Illinois 60439
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5013172
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 80:7; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
CHLORINE
COLLISIONS
ELECTRON COLLISIONS
ELECTRON SPECTROSCOPY
ELECTRON-MOLECULE COLLISIONS
ELECTRONIC STRUCTURE
ELEMENTS
ENERGY LOSSES
ENERGY RANGE
EV RANGE
EV RANGE 01-10
HALOGENS
LOSSES
MOLECULE COLLISIONS
NONMETALS
SPECTROSCOPY