Three different hohlraums, two for single beam and one for multiple beam irradiation, are investigated as to their suitability for shock wave and equation of state experiments. Important in this respect is how strongly the sample material is preheated before the shock arrival and how uniformly the sample is irradiated. Spherical hohlraums turned out to be unsatisfactory. A good performance is acheived with a D-shaped hohlraum for mutliple beam irradiation and even a better one with a recently developed cavity for single beam irradiation using an internal converter.
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