Spatial mapping of transient atomic concentrations using acousto-optic deflection
Journal Article
·
· Appl. Spectrosc.; (United States)
We report a new imaging system for obtaining spatially and temporally resolved atomic absorption profiles for transient events. This is based on an acousto-optic beam deflector that scans the probe laser beam in one dimension repeatedly across the spatial region of interest. Scan rates of 10 ..mu..s durations essentially freeze the absorbing species in time to allow a spatial resolution of 0.06 cm over a 1.2 cm length. With the use of 2K of buffer memory and a digitization interval of 200 nm (12 bits), the time evolution can be followed up to a total of 400 ..mu..s. The capabilities are demonstrated in the study of atom formation in a laser generated plume for a sodium tungstate surface.
- Research Organization:
- Department of Chemistry and Ames Laboratory-USDOE, Iowa State University Ames, Iowa 50011
- DOE Contract Number:
- W-7405-ENG-82
- OSTI ID:
- 5228997
- Journal Information:
- Appl. Spectrosc.; (United States), Vol. 40:1
- Country of Publication:
- United States
- Language:
- English
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