0021620 Gn: If the curve of Fig. 3 is applied to the idealized mass contour ratio scaling functions, where the total crater mass is mixed with all the radionuclides, the value of the contour ratio would decrease as the scaled height increases and would increase as the scaled depth increases (up to a maximm). In a real detonation, the pressure and density of ' the confined vapors at larger values of the scaled depth could result in condensation and particle formation processes that differ markedly from surface and above-surface detonations, resulting in significant deviations from the idealized model. It may be noted that the curve of Fig. 3 has no inflection at zero charge depth and that it is very steep near zero charge depth. Therefore if Eq. 23 is valid in’ terms of the given in Fig. 3, the value of M.(t) is extremely sensitive to the height or depth of burst. In Reference 7, some of M,(1) values for the JANGLE "S" and "U" Shots were averaged. For the "S" Shot, the average value of M.(1) was 23.6 (mg/sq ft)/(r/br at 1 br) and for the "U" Shot it was 85.9. ‘The value of for the "S" Shot with a A of -0.02 is 1.45; this correction gives a M8(1) value of 34.2. ‘The value of Gy for the "U" Shot with a A of 0.13 is 0.32; this correction gives a M8(1) value of 27.6. ‘The two ME(1) values for the 1.2 KT yield thus obtained are within the experi- mental and computational errors involved in obtaining the average values. Thus Fig. 3 can be used as a guide in adjusting the M&(1) values for detonations with \ values between -0.02 and 0.13. When the data from Operation TEAPOT ESS Shot and others are reduced, it may be possible to derive a better scaling function for ay than that given in Fig. 3. The fraction-of-device contour ratio is not expected to be sensi- tive to the height or depth of burst unless the fractionation of the radioactive components changes with the height or depth of burst. In the underwater burst, for example, the rare gas daughter products are enriched with respect to the other fission products -2l No conclusions can be made at the present time regarding the relative degree of frac- tionation in the two JANGLE Shots.19 ‘his effect was not considered in the treatment of the data in this report. The values of Table 10. The a, and ba, for some test shots are summarized in ues for PLUMBBOB Shots Diablo ami Shasta would not be valid because of the heavy towers for those shots. poE/NY