Time‐resolved mass and energy analysis by position‐sensitive time‐of‐flight detection

Autor:	D. A. Lichtin, James E. Pollard, Siegfried W. Janson, R. B. Cohen
Rok vydání:	1990
Předmět:	Physics Spectrometer business.industry Detector Mass spectrometry Kinetic energy Particle detector Time of flight Optics Temporal resolution Microchannel plate detector Atomic physics business Instrumentation
Zdroj:	Review of Scientific Instruments. 61:3134-3136
ISSN:	1089-7623 0034-6748
DOI:	10.1063/1.1141705
Popis:	We describe a method for time‐resolved mass and kinetic energy analysis of ionic or neutral species (1–150 amu, 0.5–500 eV) in diagnostic measurements on spacecraft electric thrusters. Time‐of‐flight mass spectrometry is combined with position‐sensitive detection to measure energy spectra for multiple masses at sampling rates as high as 50 kHz. A rectangular microchannel plate detector with a 96‐element metal anode array is read out by fast analog‐to‐digital converters or by discriminators and scalers. The ion drift time varies as the square root of the mass‐to‐charge ratio, and the displacement along the detector varies as the square root of the energy‐to‐charge ratio. The energy resolution is enhanced by minimizing the field distortion near grid wires.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::275d1351a0d985d44df09990d58c2ab6 https://doi.org/10.1063/1.1141705 Zobrazit plný text záznamu