X-Ray Residual Stress Measurement of Gas-Soft Nitrided Steels.

Recent Advances in the Measurement of Residual Stress by X-Ray Diffraction

Residual Gas X-ray Beam Position Monitor for Petra-iii

The development effort is driven by the need for a new type of x-ray beam position monitor, which can detect the centre of gravity of the undulator beam. A residual gas xray beam position monitor for the PETRA III storage ring was developed and tested.

Depth-resolved residual stress evaluation from X-ray diffraction measurement data using the approximate inverse method

The paper deals with the depth determination of residual stress states from diffraction data. First an historical overview of the known approaches is given. Then we apply the approximate inverse method to this problem. This method is known to be very efficient and stable with respect to noise-contaminated data. It is even possible to prove convergence and it allows an error estimate of the calc...

Optimum driving a Z-pinch for soft X-Ray lasers

A capillary plasma z-pinch as an alternative active medium of soft X-Ray lasers was studied experimentally and theoretically. The theoretical analysis was based on the self consistent solution of the so called “snow plow” model. The dynamics of pinched plasma is determined by the capillary parameters and by the time dependence of electrical current passing through it. The current time dependenc...

Small rare-gas clusters in soft x-ray pulses.

We develop a microscopic model for the interaction of small rare-gas clusters with soft x-ray radiation from a free electron laser. It is shown that, while the overall charging of the clusters is rather low, unexpectedly high atomic charge states can arise due to charge imbalances inside the cluster. These findings are explained by an increased absorption via inverse bremsstrahlung due to high ...