Accession Number:

AD0649998

Title:

THE NRDL GAMMA-/X-RAY SCATTERING FACILITY,

Descriptive Note:

Corporate Author:

NAVAL RADIOLOGICAL DEFENSE LAB SAN FRANCISCO CALIF

Personal Author(s):

Report Date:

1966-12-22

Pagination or Media Count:

46.0

Abstract:

A dual detector facility for measuring scattered gamma or x-radiation is described. This facility which uses highly shielded and collimated detectors, NaI Tl and GeLi, and a multi-channel pulse height analyzer, is capable of measuring the spectra of scattered radiation at angles from 1.3 to 135 degrees. Spectral measurements of scattered 137Cs gamma rays 661.6 keV are currently being made however, scattering measurements with primary photon energies ranging from 40 keV to 200 keV are planned. Energy resolutions 137Cs gamma rays of the 4 x 4 in. NaI Tl dector and the 8 mm w x 18 mm 1 x 6 mm depletion depth GeLi detector are 8.16 and approx. 2.86 keV respectively. Cross sections for differential coherent and incoherent scattering, as well as the photo-electric and the total mass absorption coefficients can be measured using this apparatus. Author

Subject Categories:

  • Nuclear Instrumentation
  • Nuclear Radiation Shielding, Protection and Safety

Distribution Statement:

APPROVED FOR PUBLIC RELEASE