X-ray radiography based on the phase-contrast imaging with using LiF detector

Sergey Makarov ,Tadashi Togashi ,B Albertazzi ,Olivier Poujade ,A P Chernyaev ,Norimasa Ozaki ,M J.-E Manuel ,T Vinci ,M Kœnig ,P Mabey ,R Kodama ,A Casner ,N Kamimura ,Makina Yabashi ,Yuichi Inubushi ,É Falize ,Yoshikuni Umeda ,Kento Katagiri ,T Yabuuchi ,А В Бузмаков ,G Rigon ,Kohei Miyanishi ,Keiichi Sueda ,G Gregori ,T A Pikuz ,V Bouffetier ,S A Pikuz

doi:10.1088/1742-6596/1787/1/012027

Abstract

An x-ray radiography technique based upon phase contrast imaging using a lithium fluoride detector has been demonstrated for goals of high energy density physics experiments. Based on the simulation of propagation an x-ray free-electron laser beam through a test-object, the visibility of phase-contrast image depending on an object-detector distance was investigated. Additionally, the metrological capabilities of a lithium fluoride crystal as a detector were demonstrated.

Highlights

Today, a field of high energy density physics (HEDP) is actively developing and exploring tasks including laboratory astrophysics [1, 2], materials science [3] and inertial confinement fusion research [4, 5]
X-ray radiography is widely used to visualize the processes that are studied in experiments in high energy density physics
The absorption on the hard x-ray photons, which used in HEDP experiments, is very weak to see distinct images

Summary

Introduction

A field of high energy density physics (HEDP) is actively developing and exploring tasks including laboratory astrophysics [1, 2], materials science [3] and inertial confinement fusion research [4, 5]. In recent work [11] the capabilities of novel x-ray imaging detectors utilizing an Ag-doped phosphate glass and lithium fluoride (LiF) films were demonstrated for their applications in the two-dimensional (2D) dose imaging The advantages of such detectors compared to image plates (IP) are a high spatial resolution on the order of microns, a wide dynamic range and a non-destructive signal readout operation. The purpose of this paper is to demonstrate the capabilities of x-ray radiography based on the phase-contrast imaging in HEDP experiments with using LiF detector. We conclude that at the distances R = 100–120 mm the imaging scheme will satisfy both requirements: providing conditions for observing phase-contrast and achieving the spatial resolution of 1 μm

LiF crystal as x-ray imaging detector

Conclusions