Depth Profiling of Hydrogen in Amorphous Media and Applicable to Quartz Air Filters
Castaneda CM, Cahill TA, Romero JL, King RS. 1998. Depth Profiling of Hydrogen in Amorphous Media and Applicable to Quartz Air Filters. Nuclear Instruments and Methods in Physics Research B. 145:553-561
ABSTRACT: We have explored the use of proton-proton coincidence, at proton energy of 6.35 MeV, for hydrogen determination and depth profiling in amorphous media. The method has been applied to quartz air filters. This non-destructive method is highly specific to hydrogen, depending only on the energy-loss distribution in p-p scattering events. The method, combined with other techniques, can be used to measure the total amount and depth distribution of particulate organic matter in aerosols on quartz air. The results for ambient air quartz filters show that the technique can separate several kinds of gaseous organic artifact, one of which cannot be corrected through the standard use of tandem quartz filters.
- Type
- Journal Article
- Authors
- Castaneda, Carlos; Cahill, Thomas; Romero, Juan; King, Roger
- Units
- ARD , GRSM
- Keywords
- air pollution, air quality, APHN, Appalachian Highlands Network, filter technology, Great Smoky Mountains National Park, GRSM, GRSM-00065, IMPROVE, Look Rock, monitoring, SER, Southeast Region