High-resolution quasi-monochromatic X-ray imaging using a Fresnel phase zone plate and a multilayer mirror.
High-resolution, high-sensitivity X-ray imaging is a real challenge in laser plasma diagnostic to attain reliable data in high-energy density plasma experiments. In this context, ultra-high-intensity lasers generate hot and dense plasma but only in a small volume. An experiment has been performed at the LULI2000 laser facility to diagnose such plasma conditions from thermal spectroscopic data. To image the emission zone plasma's Al Heβ, a Fresnel-lens-based X-ray imager has been developed. It features a 846 μm-diameter Fresnel Phase Zone Plate (FPZP) and a Pd/B4C multilayer mirror (thickness d = 5.1 nm). This association can be used between 1500 eV and 2100 eV. The FPZP's efficiency was measured on a synchrotron facility (SOLEIL) and its spatial resolution in a laser facility (EQUINOX). The mirror reflectivity was measured on the synchrotron facility BESSY II. With experimental conditions, the system resolution reaches 3.8 ± 0.6 μm with an adequate efficiency in the 1800 eV-1900 eV energy range with a solid angle of 9 × 10-6sr. Consequently, a FPZP is an excellent optics setup for high-resolution quasi-monochromatic X-ray imaging and provides a good collection angle. Bragg-Fresnel lenses, based on the principle of FPZP and mirrors, are currently designed for an X-ray imager at the Laser MégaJoule facility.
Commissariat à l'Énergie Atomique, DAM-Île de France, BP 12, 91680 Bruyères-le-Châtel, France.
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0000000174372147
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Commissariat à l'Énergie Atomique, DAM-Île de France, BP 12, 91680 Bruyères-le-Châtel, France.
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0000000239528836
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Troussel
LULI-CNRS, École Polytechnique, CEA, Université Paris-Saclay, F-91128 Palaiseau Cedex, France and UPMC Univ. Paris 06, Sorbonne Universités, Paris, France.
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Baton
Commissariat à l'Énergie Atomique, DAM-Île de France, BP 12, 91680 Bruyères-le-Châtel, France.
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Dervieux
Commissariat à l'Énergie Atomique, DAM-Île de France, BP 12, 91680 Bruyères-le-Châtel, France.
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Gontier
Commissariat à l'Énergie Atomique, DAM-Île de France, BP 12, 91680 Bruyères-le-Châtel, France.
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Lecherbourg
Commissariat à l'Énergie Atomique, DAM-Île de France, BP 12, 91680 Bruyères-le-Châtel, France.
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Loupias
LULI-CNRS, École Polytechnique, CEA, Université Paris-Saclay, F-91128 Palaiseau Cedex, France and UPMC Univ. Paris 06, Sorbonne Universités, Paris, France.
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0000000192368037
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LULI-CNRS, École Polytechnique, CEA, Université Paris-Saclay, F-91128 Palaiseau Cedex, France and UPMC Univ. Paris 06, Sorbonne Universités, Paris, France.
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Pérez
Commissariat à l'Énergie Atomique, DAM-Île de France, BP 12, 91680 Bruyères-le-Châtel, France.
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Renaudin
Commissariat à l'Énergie Atomique, DAM-Île de France, BP 12, 91680 Bruyères-le-Châtel, France.
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0000000196880281
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Reverdin
Commissariat à l'Énergie Atomique, DAM-Île de France, BP 12, 91680 Bruyères-le-Châtel, France.
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Rubbelynck
Commissariat à l'Énergie Atomique, DAM-Île de France, BP 12, 91680 Bruyères-le-Châtel, France.
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Stemmler
Commissariat à l'Énergie Atomique, DAM-Île de France, BP 12, 91680 Bruyères-le-Châtel, France.
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Soullié