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    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/014/04/0289-0294

    • Keywords

       

      Electron bombardment; ion source; ion current; sensitivity; mass spectrometer

    • Abstract

       

      A modified electron bombardment type ion source suitable for use with mass spectrometer is described. Ion formation occurs throughout a relatively large volume in the ionisation box, since no magnetic field is used to collimate the ionising electrons. A sensitivity of 2 × 10−5 amp/torr is obtained for an ion extraction energy of 2 keV and 200 mass resolution. Trajectory tracing has been used to study the operation of the ion source. Capability of the ion source to analyse solid samples in microgram quantity was tested by studying evaporation of BaO from tungsten.

    • Author Affiliations

       

      S V Ghaisas1 S M Chaudhari1 M R Bhiday1 V N Bhoraskar1

      1. Department of Physics, University of Poona, Poona - 411 007, India

    • Dates

       
      Published
      April 1980
      Manuscript received
      24 November 1979
      Manuscript revised
      3 March 1980

  • Pramana – Journal of Physics | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

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