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The first measurements of the shift in position of the photoabsorption edge in a laser-heated and shocked solid material are reported. A buried tracer layer is first radiatively heated to a few electron-volts leading to the appearance of bound-bound transitions near to the K photoabsorption edge. Then as the shock runs through, the K edge shifts to lower energy ionizing the bound-bound transitions, in agreement with theory.
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Bradley et al. (1987) studied this question.
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