EMULSION STATISTICS
Statistical problems presented by the granularity of nuclear trick emulsion have been treated. In concentrated emulsions a large fraction of the volume is occupied by solid silver halide crystals of various diameters. This excluded volume makes inapplicable considerations that presuppose the conditions leading to simple distributions. An exact treatment of the elementary trick-cell is given. A corrected form of the Jdanov formula is derived. The effect of the emulsion granularity on the energy-loss straggling is calculated. A general formulation of the developability cross section of an emulsion grain is made. The mean primary grain density and the grain-density distribution are calculated. The gap-length distribution is derived. It is proved that this is exponential for gaps of all lengths, and that the gap-length coefficient is equal to the true grain density. The effect of secondary ionization is discussed. Parameters have been introduced that can be evaluated experimentally. Knowledge of these quantities will presumably be useful in further resolving the problem of silver halide sensitivity. The statistical methods developed may be useful in other excluded-space problems. (auth)
- Research Organization:
- California Univ., Berkeley, CA (US). Lawrence Radiation Lab.
- Sponsoring Organization:
- US Atomic Energy Commission (AEC)
- DOE Contract Number:
- W-7405-ENG-48
- NSA Number:
- NSA-13-017075
- OSTI ID:
- 4238993
- Report Number(s):
- UCRL--8687
- Country of Publication:
- United States
- Language:
- English
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