Experimental observation of spatial jitters of a triple-pulse x-ray source based on the pinhole imaging technique

TL;DR

This paper uses pinhole imaging to observe and analyze the spatial jitters of a triple-pulse x-ray source, providing insights into source stability crucial for high-energy radiography quality.

Contribution

It demonstrates the application of pinhole imaging to measure spatial jitters of a triple-pulse x-ray source, combining experimental and numerical analysis.

Findings

Measured source position deviations between pulses

Validated imaging technique with simulations

Provided data on source stability for radiography

Abstract

In high-energy flash radiography, scattered photons will degrade the acquiring image, which limits the resolving power of the interface and density of the dense object. The application of large anti-scatter grid is capable of remarkably decreasing scattered photons, whereas requires a very stable source position in order to reduce the loss of signal photons in the grid structure. The pinhole imaging technique is applied to observe spatial jitters of a triple-pulse radiographic source produced by a linear induction accelerator. Numerical simulations are taken to analyze the performance of the imaging technique with same or close parameters of the pinhole object and experimental alignment Experiments are carried out to observe spatial jitters of the source between different measurements. Deviations of the source position between different pulses are also measured in each experiment.