Obtaining the complex refractive index vectors n (ν~) and k (ν~) allows calculation of the
(infrared) reflectance spectrum that is obtained from a solid in any of its many morphological …

Due to a legacy originating in the limited capability of early computers, the spectroscopic
resolution used in Fourier transform infrared spectroscopy and other systems has largely …

In situ remediation applications of ammonia (NH 3) gas have potential for sequestration of
subsurface contamination. Ammonia gas injections initially increase the pore water pH …

A method for deriving the optical constants (n/k) of organic powdered materials using
pressed pellets in the mid-infrared spectral range is introduced that combines variable angle …

We document an artifact associated with the back reflection from samples or sampling
accessories in Fourier transform spectrometers. Samples oriented normal to the incoming …

Spectra of the optical constants n and k of a substance are often deduced from
spectroscopic measurements, performed on a thick and homogeneous sample, and from a …

A method is presented to generate quantitative vapor-phase infrared spectra from
substances that naturally occur as solids with moderate volatility. The solid is gravimetrically …

Reflectance spectroscopy, especially at infrared wavelengths, is often used for contact,
standoff, and remote sensing of solid materials. The reflectance spectra of solids, however …

There exists a need to measure optical constants n and k for many materials, especially
organic solids in the infrared spectral region, but at present, there are only two established …

The effects of light scattering and refraction play significantly different roles for aerosols than
for bulk materials, making it challenging to identify aerosolized chemicals using traditional …