BACTERIAL PATTERN IDENTIFICATION IN NEAR-INFRARED SPECTRUM

Near-infrared electronic spectrum of CH2+.

Four vibronic bands of the A 2B1(Piu)<--X 2A1 electronic transition of CH2+ have been observed in the near infrared from approximately 11,000-13,000 cm(-1) using a highly sensitive spectrometer based on a Ti:sapphire laser and a positive column plasma. The two states are derived from the lowest 2Piu state of the linear conformation as a result of a strong Renner-Teller effect. As expected, the ...

Portable Refrigerant Identification by Near Infrared Spectrophotometry

Water in the near-infrared spectrum of comet 8P/Tuttle

High-resolution spectra of comet 8P/Tuttle were obtained in the frequency range 3449.0– 3462.2 cm−1 on 2008 January 3 UT using CGS4 with echelle grating on United Kingdom Infrared Telescope. In addition to observing solar pumped fluorescent lines of H2O, the long integration time (152 min on target) enabled eight weaker H2O features to be assigned, most of which had not previously been identifi...

Soot Scattering Measurements in the Visible and Near-infrared Spectrum

Scattering to extinction cross-section ratios, qse, were measured using the NIST Large Agglomerate Optics Facility for soot produced from ethene and acetylene laminar diffusion flames. Measurements were performed using light sources at 543.5 nm, 632.8 nm, and 856 nm. The average scattering to extinction cross-section ratios for these wavelengths are equal to 0.245, 0.195, and 0.195 for ethene a...

Spectrum of a Habitable World: Earthshine in the Near-infrared

To characterize the spectrum of Earth viewed as an extrasolar planet, we observed the spatially integrated nearinfrared (0.7–2.4 !m) reflection spectrum of Earth via the dark side of the Moon (earthshine). After contributions from the Sun, Moon, and local atmosphere were removed, the resulting spectrum was fitted with a simple model of the reflectivity of Earth. The best model fit is dominated ...