Accession Number : AD0455712

Title :   CALCULATED SPECTRAL SENSITIVITY OF IGY AND IQSY NEUTRON MONITORS,

Corporate Author : ATOMIC ENERGY OF CANADA LTD CHALK RIVER ONTARIO

Personal Author(s) : Pearce, R. M. ; Fowler, A. G.

Report Date : 07 AUG 1964

Pagination or Media Count : 5

Abstract : A computer study has been made of the efficiency of the IGY cosmic radiation neutron monitor and of the improved NM-64 monitor intended for the IQSY. A reactor shielding program was used to calculate the probabilities of detecting evaporation and cascade neutrons of different energies which originated in the monitor. The probability of detecting nuclear disintegrations within the monitor has then been estimated using neutron multiplicities predicted by evaporation theory. The over-all sensitivity and energy dependence are compared for the two monitors. (Author)

Descriptors :   (*COSMIC RAYS, NEUTRON COUNTERS), PERIODIC VARIATIONS, COMPUTERS, GEOMAGNETISM, SENSITIVITY, DIFFUSION, CASCADE STRUCTURES.

Distribution Statement : APPROVED FOR PUBLIC RELEASE