Scientific Results

Pin-hole array production and detailed data analysis for advanced single-shot X-ray imaging of laboratory plasmas

Year: 2010

Authors: Levato, T. Labate, L., Pathak N. C., Cecchetti C., Koester P., Di Fabrizio E., Delogu P., Giulietti A., Giulietti D., Gizzi LA.

Autors Affiliation: FLAME, Laboratori Nazionali di Frascati (LNF), Via E. Fermi 40, 00044 Frascati, Italy; ILIL, Consiglio Nazionale delle Ricerche (CNR), Pisa, Italy; BIONEM, Campus Magna Graecia University of Catanzaro (UMG), Italy; University of Pisa, Department of Physics, Italy

Abstract: Laser produced plasmas offer the unique opportunity to investigate physical mechanisms working at extremely high field in pulsed regime [1] (Gizzi et al., 2009). Future large scale infrastructure like HiPER and ELI may open new frontiers of knowledge in this way. Technologies needed for improving diagnostic in this field have a strong impact on a wide range of multi-disciplinary applications as for compact plasma-based accelerators [1,2] (Gizzi et al., 2009; Betti et al., 2009) laser fusion oriented experiments, three-dimensional microscopy and lithography. As an example the X-ray imaging, being a powerful diagnostic tool for deep investigation on different variety of laser produced plasma, has obtained a grooving effort in recent years. Large scale facilities working in single-pulse regime for laser fusion oriented experiments have evidenced the necessity to obtain spectrally resolved X-ray images of produced plasmas in a single shot. By combining the charge coupled devices (CCD) based single-photon detection technique with a pin-hole array (PHA) a new diagnostic technique was developed, as shown in recent experiments related to the European HiPER project [3] (Labate et al., 2009). Here we qualitatively describe the PHA production process on a heavy metal substrate by means of SEM images that show an internal diameter on the micrometer scale and an aspect ratio of about 20. The characterization of the X-ray contrast up to 90 keV is presented. The data analysis of the X-ray photons interaction on CCD, for spectrum reconstruction up to high energy, is described [4] (Levato et al., 2008). (C) 2010 Elsevier B.V. All rights reserved.

Journal/Review: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT

Volume: 623 (2)      Pages from: 842  to: 844

More Information: Proceedings Paper: 1st International Conference on Frontiers in Diagnostic Technologies, Frascati, ITALY, NOV 25-29, 2009
KeyWords: X-ray pin-hole array (PHA);; X-ray energy resolved imaging; X-ray single-shot imaging; Metal mesh holes; Ultrafast ablation
DOI: 10.1016/j.nima.2010.02.082

Citations: 3
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