DETECTION AND ANALYSIS OF CHEMICAL AND BIOLOGICAL MATERIALS

摘要

PROBLEM TO BE SOLVED: To provide an apparatus (10) for detecting and analyzing chemical and biological constituents in a sample (12). SOLUTION: The apparatus (10) for detecting constituents in the sample includes a spectrometer (18) for passively receiving emissions (22) from the sample (12). A telescope (58) and/or other optical device (70) is used to confine the filed-of-view of the spectrometer (18). A low-temperature device (28) is positioned within the field-of-view of the spectrometer (18) at an opposite side of the sample (12) from the spectrometer (18). The low-temperature device (28) provides a low-temperature background relative to the sample (12) so as to increase the emissions from the sample (12), and also to reduce the background emission. COPYRIGHT: (C)2005,JPO&NCIPI