urn:nasa:pds:context:instrument:relab.bcf-ftir2 1.0 1.11.0.0 Product_Context 2020-04-09 1.0 Post-peer-review version. urn:nasa:pds:context:facility:laboratory.relab instrument_to_facility Thermo Nicolet Nexus 870 FTIR with Pike AutoDiff Diffuse Reflectance Accessory Spectrometer Near and Mid Infrared FT-IR Spectrometer Operating Spectral Range: Nominal (1.0 to 50 µm) Possible (0.8 to 200 µm) Mode Range (µm) Light Source Beam Splitter Detector A 1.0–4.7 Quartz Si-on-CaF2 TE cooled DTGS A* 0.9–4.5 Quartz Si-on-CaF2 LN2 cooled InSb B 1.3-28 Glowbar Ge-on-KBr TE cooled DTGS C 14.3-200 Glowbar Solid substrate DTGS Resolution: 16, 8, 4, 2, 1 or 0.5 cm-1 Default: 4 cm-1 Geometry: Diffuse reflectance: Biconical, off-axis for Pike specimen holder Transmission: normal incidence (collimated) Sample: Particulate specimen or soil (reflectance): Measured horizontal and uncovered in purged (H2O, CO2 free) environment. Desired specimens amount is 50 - 500 mg. Specimen should be no smaller than 20 mg. More than 1 g is unnecessary. Multiple specimens can be measured in sequence (same environment) Chip (reflectance): Measured horizontal and uncovered. Regions to be measured should be no smaller than 1 mm. Maximum size is 1 cm in height and 3 cm in diameter. Thin section and single crystal (transmission): Measured vertical, attached to an appropriate aperture board. Regions to be measured should be no smaller than 1.5 mm. Surface should be polished and clean (no carbon coating). Reference Standard: Brushed diffuse gold (reflectance) Blank (transmittance) Additional Attachments: Pike AutoDiff Diffuse Reflectance Autosampler Continuµm Microscope system Transmission mode currently operational Reflectance mode (with 2-D capabilities) being tested. Software: OMNIC, Atlµs [new]