Miniaturized pulsed discharge ionization detector, non-radioactive ionization sources, and methods thereof
| DWPI Title: Miniaturized pulsed discharge ionization detector for use in volatile organic chemical detection platform, has annular electrode placed between annular insulators, where bores of insulators and bore of electrode provide portion of chamber |
| Abstract: The present application relates to pulsed discharge ionization detectors (PDIDs) and non-radioactive ionization sources, including miniaturized forms thereof. In some examples, the PDID includes annular electrodes, where each electrode is disposed between annular insulators. Also provided herein are methods of making and using such PDIDs, such as for detecting one or more volatile organic compounds, as well as non-radioactive ionization sources. |
| Use: Miniaturized pulsed discharge ionization detector for use in a volatile organic chemical (VOC) detection platform for sensing signatures of human odor, human gender and identity and detecting toxic chemicals, water contaminants, chemical warfare agents, explosives, biological volatiles, light gases and disease indicators. |
| Advantage: The detector places electronic measurement adjacent to a collector to provide improved signal-to-noise performance. The detector can be used to replace a radioactive source and ion gates of ion mobility spectrometer (IMS) and similar instruments to eliminate ion gates for the IMS and to facilitate correlation ion mobility spectrometry. The detector is designed such that central hole or bore diameter height of the electrode and the insulator defines an internal volume of the detector, and can be easily modified in manufacturing process. |
| Novelty: The detector has an ionization source for providing a discharge zone placed in a portion of a chamber of the detector. First and second annular insulators (121, 122) comprise sets of proximal faces, distal faces and bores defined through the proximal and distal faces. One of the proximal and distal faces nests within one of recessed portions (104) of an annular electrode. The annular electrode is placed between the first and second annular insulators. The bores of the first and second annular insulators and a bore (103) of the annular electrode provide a portion of the chamber of the detector. The annular electrode comprises rapid prototyped conductive material. |
| Filed: 1/11/2016 |
| Application Number: US14992855A |
| Tech ID: SD 13055.2 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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