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Updated: Apr 23, 2026

An Experimental Protocol for Femtosecond NIR/UV - XUV Pump-Probe Experiments with Free-Electron Lasers
Published on: October 23, 2018
Note: On the generation of sub-300 keV flash-X-rays using rod-pinch diode: an experimental investigation
N Satyanarayana1, R K Rajawat1, Shibaji Basu1
1Facility for Electromagnetic Systems, BARCF(V), B-Block, Autonagar, Visakhapatnam 530012, Andhra Pradesh, India.
Abstract:
Generation of flash X-rays (FXRs) at less than 500 keV is described with emphasis on experimental investigation. The pulser is a Tesla transformer-Water transmission line based pulsed power generator operating in double resonance mode to power a rod-pinch diode. The configuration of aspect ratio reported here falls much below the normally reported ratios for the rod-pinch diode operation. Experimental investigation at such low pulsed voltage has revealed "flowering" of the anode tip and "pitting" of the perspex window. A possible explanation in terms of Lorentz body force is discussed rather than the pinch mechanism generally suggested in literature. The experimental investigation for the FXR generation is corroborated by measuring the radiation dose using CaSO4 (Dy) thermo luminescent dosimeters.
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