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Record Details

Record 36 of 5805
New high-resolution electrostatic ion mass analyzer using time of flight
External Online Source: doi:10.1063/1.1141695
Author and Affiliation:
Hamilton, D. C.(Maryland Univ., College Park, MD, United States)
Gloeckler, G.(Maryland Univ., College Park, MD, United States)
Ipavich, F. M.(Maryland Univ., College Park, MD, United States)
Lundgren, R. A.(Maryland Univ., College Park, MD, United States)
Sheldon, R. B.(Maryland, University, College Park, United States)
et al.
Abstract: The design of a high-resolution ion-mass analyzer is described, which is based on an accurate measurement of the time of flight (TOF) of ions within a region configured to produce a harmonic potential. In this device, the TOF, which is independent of ion energy, is determined from a start pulse from secondary electrons produced when the ion passes through a thin carbon foil at the entrance of the TOF region and at a stop pulse from the ion striking a microchannel plate upon exciting the region. A laboratory prototype instrument called 'VMASS' was built and was tested at the Goddard Space Flight Center electrostatic accelerator, showing a good mass resolution of the instrument. Sensors of the VMASS type will form part of the WIND Solar Wind and Suprathermal Ion experiment, the Soho mission, and the Advanced Composition Explorer.
Publication Date: Oct 01, 1990
Document ID:
19910028314
(Acquired Nov 28, 1995)
Accession Number: 91A12937
Subject Category: SPACECRAFT INSTRUMENTATION
Document Type: Journal Article
Publication Information: Review of Scientific Instruments (ISSN 0034-6748); 61; 3104-310
Publisher Information: United States
Contract/Grant/Task Num: NASW-4221; NAGW-1856; NAGW-101
Financial Sponsor: NASA; United States
Organization Source: Maryland Univ.; College Park, MD, United States
Description: 3p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: HARMONIC OSCILLATORS; HIGH RESOLUTION; ION DISTRIBUTION; ONBOARD EQUIPMENT; TIME OF FLIGHT SPECTROMETERS; AMPTE (SATELLITES); MASS SPECTROMETERS; SOHO MISSION; SOLAR WIND; SPACE MISSIONS
Imprint And Other Notes: (APS, DOE, and MIT, Topical Conference on High Temperature Plasma Diagnostics, 8th, Hyannis, MA, May 6-10, 1990) Review of Scientific Instruments (ISSN 0034-6748), vol. 61, pt. 2, Oct. 1990, p. 3104-3106.
Availability Source: Other Sources
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