2026-03-08T18:20:43Zhttps://uvadoc.uva.es/oai/requestoai:uvadoc.uva.es:10324/696782024-09-11T19:01:23Zcom_10324_1159com_10324_931com_10324_894col_10324_1310
Referenceless, grating-based, single shot X-ray phase contrast imaging with optimized laser-driven K-α sources
Bouffetier, V.
Stutman, D.
Stoeckl, C.
Begishev, I. A.
Theobald, W.
Filkins, T.
Mileham, C.
Ceurvorst, L.
Klein, S. R.
Goudal, T.
Casner, A.
Valdivia, M. P.
Pérez Callejo, Gabriel
Física
Óptica
Producción Científica
With its ability to efficiently probe low-Z materials, X-ray phase imaging methods have recently raised high interest in multiple fields from biology and medical applications to high energy density (HED) physics. Initially developed with synchrotron light and X-ray tubes, we present a novel grating based Talbot X-ray deflectometer (TXD) diagnostic that was coupled with laser-generated K-α X-ray sources. The multi-terawatt laser (I > 1 × 1014 W cm-2) was used as a testbed for diagnostic development. It was found that X-ray source chromaticity plays an important role in TXD. Indeed, the broadband spectrum of laser-generated X-ray sources may strongly impact image quality and thus diagnostic performance. We qualified X-ray emission from different laser-produced sources and determined laser, target, and deflectometer parameters that optimize TXD performance. We present the first results of referenceless grating-based X-ray imaging at high-power laser facilities and discuss the implications of this new development in HED research.
2024-09-11
2024-09-11
2024
info:eu-repo/semantics/article
Optics Express, Septiembre 2024, vol. 32, n. 20, p. 34694-34709
1094-4087
https://uvadoc.uva.es/handle/10324/69678
10.1364/OE.516695
34694
20
34709
Optics Express
32
1094-4087
spa
info:eu-repo/semantics/openAccess
Optica Publishing Group