A resistive bolometer for measuring soft X-ray radiation energy

A resistive bolometer which is used to diagnose soft X-ray fluence is described. The bolometer is calibrated with Ohm heating. In the calibration scheme, heat loss into the substrate is considered with a simple one-dimensional heat conduction model. We utilize the bolometer to diagnose soft X-ray fluence of tungsten wire array Z-pinch experiments on PTS. Comparison of the bolometer measurements with a flat spectral response XRD (FSR-XRD) shows that the soft X-ray power and energy measurements from bolometers are reasonably consistent with that obtained by FSR-XRD.