Surface Properties of Shocked Lead

Couch, R.; Shaw, Larry L.; Barlett, R. H.; Steinmetz, L. L.; Behrendt, W.; Firpo, C.

doi:10.1051/jphyscol:1985549

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Cited by 8 publications

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“…The ejecta size/mass and velocity distributions have been studied in both gases and vacuum [16,17,18,19,20,21,22,23,24,25,26,27,28]. It's known [29] that droplets with sufficiently small Ohnesourge numbers and Weber numbers below a critical value of 11 the droplets are relatively stable and do not breakup much further.…”

Section: Introductionmentioning

confidence: 99%

A simple hydride model for cerium ejecta particles

Regele

Harrison

Schwarzkopf

et al. 2020

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Cerium ejecta particles form after a shock wave impacts a cerium plate with a known roughness or prescribed surface perturbation. When these particles are ejected into hydrogen or deuterium gas the material reacts exothermically and raises the temperature of the particle relative to the gas. A simple model is developed, assuming that the particle remains intact and spherical, to capture the heat and mass transfer that occurs during this process. Model performance is evaluated by comparing with cerium ejecta experiments where the particles are ejected into deuterium gas at initial pressures of 4 and 8 atm. Overall, the model is able to capture the approximately 400 K increase in particle temperature above the surrounding gas temperature.

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