AN OPTICAL FALLOUT ANALOGUE
The principle of the optical analog is that a plate may be exposed in such a way that the resulting photographic density distribution represents the surface density of fall-out debris from a nuclear detonation. The essential components are an optical filtering system which controls the intensity of light according to the assumed initial distribution of activity over height and particle size and according to the assumed decay rate, a size control system which depends on the lateral dimensions of the cloud of debris and adjusts the size of the light beam accordingly, and a position control system which moves the beam to the correct position on the plate as determined by the wind structure and the time of fall of the particles. The machine described is intended as a fallout forecasting instrument for use in test operations. The development of the basic design equations and design criteria follows from the intended application. The treatment is, however, general enough to be of use to persors interested in variants of the analog designed for other applications. (auth)
- Research Organization:
- Los Alamos Scientific Lab., N. Mex.
- DOE Contract Number:
- W-7405-ENG-36
- NSA Number:
- NSA-13-018229
- OSTI ID:
- 4219768
- Report Number(s):
- LAMS-1961
- Resource Relation:
- Other Information: Orig. Receipt Date: 31-DEC-59
- Country of Publication:
- United States
- Language:
- English
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