Characterizing Fluorine and Chlorine Atom Flow Rates Using Iodine Atom Spectrometry
Abstract
The production of F and Cl atoms in an electrical discharge of F2 or Cl2 has been examined in a flow reactor. A tunable diode laser was used to probe the concentration and translational temperature of I atoms produced by F and Cl atom reactions with HI. Kinetic modeling codes were used to determine the discharge efficiencies from the titration plots and the observed trends for atom concentration as a function of F2 or Cl2 and pressure. These calculations indicated that the DC discharge used in these experiments is 100% efficient for F2 flow rates <= 0.5 mmol/s and reactor pressure <= 20 Torr. The highest F2-free F atom flow rate that we can generate is 1.0 mmol/s. Preliminary data for the Cl2 discharge indiate that this is a much less efficient source of Cl atoms with yields of less than 50%.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 2001
- Accession Number
- ADA406414
Entities
People
- Brent D. Rafferty
- Gerald C. Manke Ii
- John M. Herbelin
- Thomas L. Henshaw
- Timothy J. Madden
Organizations
- Air Force Research Laboratory