Progress of the LANL Low Temperature/Low Frequency Air Opacity Project - Optical Theory for HET-project: an update, April 2015

Technical Report · Wed May 20 00:00:00 EDT 2015

DOI:https://doi.org/10.2172/1182618· OSTI ID:1182618

Timmermans, Eddy Marcel Elvire ^[1]; Nisoli, Cristiano ^[1]; Mozyrsky, Dima ^[1]; Hakel, Peter ^[1]; Sherrill, Manolo ^[1]; Duffy, Leanne ^[1]

---

1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Light radiated from a hot, opaque thermal emitter originates mostly from near the surface at which the object becomes opaque (the surface of last scattering). To be specific, we define the “optical surface” as the surface at which the optical depth, as observed from a detector, takes on the value of 1. The optical depth along a line of sight depends on the wavelength dependent. Accumulating light in different spectral bands, spectral detector then records light from different surfaces, a structure that we can picture somewhat like the layers of an onion. The theoretical framework that predicts the emitted spectral signal is radioactive transfer.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC52-06NA25396
• OSTI ID: 1182618
• Report Number(s): LA-UR-15-23780
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
Molecular opacities