PORTABLE SURVEY METER FOR MEASUREMENT OF X-RAY HAZARDS ASSOCIATED WITH RADAR (X-RAY HAZARD METER).
Abstract
Investigations of various techniques d methods for measurement of pulsed x-radiation from ra dar established the scintillation technique to be the most feasible. Research on various scintilla tion phosphors resulted in the development of a unique dual-phosphor scintillation detector. Utilizing an RCA 6199 PM tube and the dual phos phor (wafers of Pilot B and lucite loaded with silver-activated zinc sulphide) energy independ ence for effective energies of 20 Kev to 1.3 Mev is achieved to within or - 15%. Four ranges (5, 50, 500 and 5000 mr/hr) are provided to meas ure pulsed X-ray doses from radars. For a radar (1 microsec pulse width, 200 pps repetition rate) the instrument can measure peak X-ray dose rates of 25, 250, 2500 and 25,000 r/hr without satura tion. The instrument is insensitive to micro wave radiation in the X band region up to 50 milliwatts/sq cm and to magnetic fields up to one gauss at 30 Kc/s. The probe is provided with arc-over protection. A prototype model, under development by the Material Laboratory, is described. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 28, 1963
- Accession Number
- AD0412461
Entities
People
- C. Christianson
- E. Duffy
- L. Mackay