Filling quantification of capillary target using X-Ray radiography and X-Ray fluorescence.

As part of the simulation program, the Laser Mégajoule (LMJ) was created to allow the reproduction of the physical conditions of nuclear fusion by heating and compressing matter with laser. This laser is focused on a millimeter-sized target. Among the variety of targets available are the tube filled targets, consisting of a tube filled line composed of a spherical plastic capsule of approximately 2 mm diameter, glued to a glass tube. In the context of this study, the glass capillary has an external diameter of 10 μm. After manufacturing, the first step is to ensure that it is not clogged or cracked, so that the gas filling of the capsule can take place. To do this characterization X-ray radiography and X-ray fluorescence are used. Moreover as X-ray radiography and X-ray fluorescence are two non-destructive characterization which are influenced by the quantity of gas inside the capsule, they can be used to determine the pressure of gas inside the capsule and also the time of filling [1][2]. This is the main purpose of this study.