J. Massen

Recent results from experiments on x‐ray confining cavities (abstract)

In continuation of the collaborative work between the Institute of Laser Engineering, Osaka and Max–Planck‐Institut fur Quantenoptik, Garching on x‐ray confining cavities, we have performed a new series of experiments using the GEKKO‐XII laser facility (4 kJ, 0.9 ns, λ=0.35 μm). The results from two experimental objectives will be presented. The first objective was the direct observation of the x‐ray confinement effect in a cavity. A special design target allowed the simultaneous measurement of the x‐ray flux emanating from a ‘‘closed’’ cavity and an ‘‘open’’ cavity. The second objective was the study of radiation transport mechanism in high‐ and low‐Z materials. Thin foils of Au and Al were used as windows on diagnostic holes of x‐ray confining cavities and their emission was compared to that of an open hole. A summary of the main results will be presented.