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X-ray phase contrast imaging of additive manufactured structures using a laser wakefield accelerator

M Vargas, W Schumaker, Z-H He, K Behm, V Chvykov, B Hou, K Krushelnick, A Maksimchuk, J A Nees, V Yanovsky2019年Plasma Physics and Controlled FusionIF 2.2出版社

X-rays generated by the betatron oscillations of electrons in a nonlinear plasma wakefield have been proposed to be useful for a range of applications. In this study, the scaling of the x-ray fluence and energy with electron beam properties and laser power are studied and the application of the x-rays for imaging additive manufactured (3D printed) test objects is investigated. The scalings confirm a strong increase in x-ray fluence with laser power and the imaging shows strong fringe contrast due to the micron scale source size.

日本語訳

非線形プラズマ航跡場における電子のベータトロン振動によって生成されるX線は、さまざまな応用に有用であることが提案されている。本研究では、電子ビーム特性とレーザーパワーに対するX線フルエンスとエネルギーのスケーリングを研究し、X線を用いたアディティブマニュファクチャリング(3Dプリント)試験物体のイメージング応用を調査した。スケーリングにより、レーザーパワーに対するX線フルエンスの強い増加が確認され、イメージングでは、マイクロメートルスケールの光源サイズによる強い干渉縞コントラストが示された。

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Wakefield accelerationLaser wakefield
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