A modulated crossed beam method is used to measure cross sections for electron impact excitation of atomic hydrogen to the lower excited atomic levels, n - 2, 3 and 4 from threshold electron impact energy up to 300eV. The objective is to provide a test of basic scattering calculations and to resolve existing discrepancies between theory and experiment. To this end, the measurements are calibrated on an absolute basis, and the angular dependencies are measured, the only measurements of this kind is the United States.

Agency
National Science Foundation (NSF)
Institute
Division of Physics (PHY)
Application #
9114747
Program Officer
John Weiner
Project Start
Project End
Budget Start
1991-06-01
Budget End
1994-05-31
Support Year
Fiscal Year
1991
Total Cost
$151,908
Indirect Cost
Name
University of Michigan Ann Arbor
Department
Type
DUNS #
City
Ann Arbor
State
MI
Country
United States
Zip Code
48109