Microcantilever charged-particle flux detector

Autor:	Thomas Thundat, A.-D. Brown, M. Smith, T. Gaulden, Andrew C. Stephan, Laurence F. Miller
Rok vydání:	2002
Předmět:	Physics Cantilever Classical mechanics Physics::Instrumentation and Detectors Electric field Detector Particle Alpha particle Atomic physics Instrumentation Particle detector Charged particle Voltage
Zdroj:	Review of Scientific Instruments. 73:36-41
ISSN:	1089-7623 0034-6748
Popis:	A micromechanical sensor for charged-particle flux detection utilizing the extreme force sensitivity of microcantilevers is demonstrated with alpha particles. The latter create a charge buildup on an electrically isolated collection plate, a metallic sphere. The cantilever detector measures the electric field emanating from the charge collection sphere using variations in mechanical parameters. Results are compared with responses due to fixed voltages on the sphere. Parameters investigated include cantilever deflection due to total charge and frequency and damping rate variation due to electrostatic force gradient. The minimum detectable particle fluence using this technique was calculated to be around 1000 particles in air, or about 3.2×10−4 pC.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4f89b0222d95ac98a0effc8d9cc8bfc3 https://doi.org/10.1063/1.1427413 Zobrazit plný text záznamu