Instrumentation for mineral processing work is described, which is made up from a high power (above 5 x 10 to the 11th power neutrons per sec) irradiation source together with detection and analytical equipment. The neutron generator makes use of the fusion reaction between tritium (combined physically in a solid) placed at one end of an evacuated tube, and gaseous deuterium at low pressure which is introduced at the other end and ionized by electrical discharge. Positively-charged deuterons are accelerated down the tube by an electric field of 250 KV, and produce the neutron flux when they collide with the tritium target. Beam currents of up to 5 ma of deuterons are available. A stabilized power supply provides the high voltage supply to the deuteron gun, and the output of neutrons is accurately monitored by counting the alpha particle emission. The vaccuum system for the generator depends on an ion pump with a capacity of 400 liters per sec. A high speed pneumatic system is employed to transfer the irradiated sample to the 400 channel pulse height analyzer. The detector is a scintillation counter, and pulses from the detector are into the analyzer which plots the number of gamma rays emitted against gamma ray energy. Means are provided whereby the confusion that could result from the overlap of energies from the two isotopes different elements may be eliminated. Read out from the equipment is in digital or analogue form, and single channel analysers are used where the proportions present for an individual element must be determined.

  • Availability:
  • Corporate Authors:

    Engineering, Chemical and Marine Press, Limited

    33-39 Bowling Green Lane
    London EC1P 1AH,   England 
  • Publication Date: 1964-5-8

Media Info

  • Features: Figures;
  • Pagination: p. 654
  • Serial:
    • Volume: 197
    • Issue Number: 5116
    • ISSN: 0013-7782

Subject/Index Terms

Filing Info

  • Accession Number: 00081577
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 19 1975 12:00AM