Nuclear Explosions in Cavities.

by Harold L. Brode

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A discussion of underground cavities as an effective means of reducing the seismic signals from nuclear detonations. This Memorandum reports the wall presures, temperatures, and densities for five specific examples, for which average cavity pressures range between 44 and 420 bars, with peak pressures between 0.2 and 8.2 Kbars. One nuclear yield, 1.7 kilotons, was exploded (theoretically) in two cavities of 20 and 40 meters radius, each with normal and one-tenth normal air density in it. The larger cavity was also used with a density of one-hundredth normal. In addition to the wall pressures, temperatures, and densities as functions of time for each case, some typical pressure, temperature, and density profiles in the cavity interiors at various times are reported. A discussion of underground cavities as an effective means of reducing the seismic signals from nuclear detonations. This Memorandum reports the wall presures, temperatures, and densities for five specific examples, for which average cavity pressures range between 44 and 420 bars, with peak pressures between 0.2 and 8.2 Kbars. One nuclear yield, 1.7 kilotons, was exploded (theoretically) in two cavities of 20 and 40 meters radius, each with normal and one-tenth normal air density in it. The larger cavity was also used with a density of one-hundredth normal. In addition to the wall pressures, temperatures, and densities as functions of time for each case, some typical pressure, temperature, and density profiles in the cavity interiors at various times are reported. 70 pp. Bibliog

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