Instrumentation Systems for Mass Spectrometers.

Abstract

Two rectangular waveform generators to excite the rods of a quadrupole mass spectrometers are described. One of the units may be operated between one and two MHz with an output voltage ranging from 4 to 80 volts. The rise and fall times are less than 50 ns. The other unit operates at one MHz over a 4 to 200 volt range with the rise and the fall times of 30 ns while driving a 30 pF load. Also included in the report are summaries of previously reported work: circuits to control a thermal emission unit used in an experiment to control vehicle potential; bias circuits for a mass spectrometer in the project EXCEDE (SWIR experiment); and modifications performed on existing mass spectrometers intended for the studies of the upper atmosphere. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1976
Accession Number
ADA032313

Entities

People

  • J. Spencer Rochefort
  • Raimundas Sukys

Organizations

  • Northeastern University

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Amplifiers
  • Bipolar Junction Transistors
  • Capacitors
  • Delay Lines
  • Electrical Engineering
  • Frequency
  • Generators
  • High Voltage
  • Mass Spectrometers
  • Measurement
  • Shift Registers
  • Signal Processing
  • Square Waves
  • Switching Circuits
  • Transistors
  • Waveform Generators
  • Waveforms

Fields of Study

  • Physics

Readers

  • Astronomy and Astrophysics.
  • Control Systems Engineering.
  • Materials Science and Engineering.