High Resolution Infrared Absorption Spectroscopy of Molecular Dopants in Cryogenic Solid Parahydrogen
Abstract
Premature claims of successful energy storage in cryogenic solids date back to the National Bureau of Standards' Free Radicals program. Such errors typically result from reliance on unsupplemented calorimetric data, which shed little light on the mechanism of energy storage i.e. chemical identities of the energetic species and microscopic structures within the trapping medium. Only spectroscopic measurements provide the species and structure specific information required for directed incremental progress towards higher stored energy densities. In HEDM program funded studies, Oka and co-workers pioneered the use of high resolution spectroscopic techniques in solid parahydrogen (pH2). Our rapid vapor deposition sample preparation technique now enables us to trap virtually any volatilizable species in solid pH2. We present results of high resolution infrared absorption experiments on pH2 solids doped with isolated molecules and small clusters.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1999
- Accession Number
- ADA408603
Entities
People
- Mario E. Fajardo
- Simon Tam
Organizations
- Air Force Research Laboratory