Accession Number:

AD0339465

Title:

GAMMA EXPOSURE RATE VERSUS TIME

Descriptive Note:

Corporate Author:

ARMY ELECTRONICS LABS FORT MONMOUTH NJ

Report Date:

1960-02-08

Pagination or Media Count:

57.0

Abstract:

The primary objective of Project 2.2 was to measure initial- and residual-gamma-exposure rates as a function of time at various distances from high-yield-thermonuclear detonations. Secondary objectives were to measure the residual gamma-exposure rate at the lip of the crater from a high-yield, land-surface and to field test a prototype thermal detector to be used in a radiological-defense-warning system. The residual-gamma radiation was detected by an unsaturated-ion chamber, whose output determined the frequency of pulses that were recorded on electro-sensitive paper. Most of the initial gamma-radiation stations consisted of scintilla tion detectors whose output determined the frequency of pulses that were recorded on magnetic tape. Some initial-gamma instruments were similar to those used during Operation Castle. The exposure rate near the crater was measured with a detector-telemeter unit dropped from a helicopter. Author

Descriptors:

Subject Categories:

  • Nuclear Instrumentation
  • Radioactivity, Radioactive Wastes and Fission Products
  • Nuclear Physics and Elementary Particle Physics
  • Nuclear Weapons

Distribution Statement:

APPROVED FOR PUBLIC RELEASE