Detonation pressures of C–H–N–O explosives at initial densities above 1.0 g/cc may be calculated by means of the simple empirical equation P = Kρ02φ, K = 15.58, φ = NM1 / 2Q1 / 2, detonation velocities by the equation D = Aφ1 / 2(1 + Bρ0), A = 1.01, B = 1.30. N is the number of moles of gaseous detonation products per gram of explosive, M is the average weight of these gases, Q is the chemical energy of the detonation reaction ( − ΔH0per gram), and ρ0 is the initial density. Values of N, M, and Q may be estimated from the H2O–CO2 arbitrary decomposition assumption, so that the calculations require no other imput information than the explosive's elemental composition, heat of formation, and loading density. Detonation pressures derived in this manner correspond quite closely to values predicted by a computer code known as RUBY, which employs the most recent parameters and covolume factors with the Kistiakowsky-Wilson equation of state.

Materials undergoing shock or impact loading experience heating due to that loading. This heating, frequently localized in the form of hot spots, can play a significant role in determining the physical and chemical response of the material to the load. To date this phenomenon has been inadequately investigated due to, at least in part, a lack of experimental techniques. Here we present a simple method for obtaining both spatial and temperature information of the heat generated in shocked or impact-loaded materials. We present some results showing the spatial heat patterns that result when NaCl crystals undergo impact loading.

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