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Experimental results on advanced inertial fusion schemes obtained within the HiPER project

Batani D., Gizzi L. A., Koester P., Labate L., Honrubia J., Antonelli L., Morace A., Volpe L., Santos J. J., Schurtz G., Hulin S., Ribeyre X., Nicolai P., Vauzour B., Dorchies F., Nazarov W., Pasley J., Richetta M., Lancaster K., Spindloe Ch., Tolley M., Neely D., Kozlová M., Nejdl J., Rus B., Wołowski J., Badziak J.

Nukleonika

2012

Vol. 57, No. 1

3-10

This paper presents the results of experiments conducted within the Work Package 10 (fusion experimental programme) of the HiPER project. The aim of these experiments was to study the physics relevant for advanced ignition schemes for inertial confinement fusion, i.e. the fast ignition and the shock ignition. Such schemes allow to achieve a higher fusion gain compared to the indirect drive approach adopted in the National Ignition Facility in United States, which is important for the future inertial fusion energy reactors and for realising the inertial fusion with smaller facilities.

Beam properties of fully optimized, table-top, coherent source at 30 nm

Jakubczak K., Mocek T., Rus B., Polan J., Hrebicek J., Sawicka M., Sikocinski P., Sobota J., Fort T., Pina L.

Opto-Electronics Review

2011

Vol. 19, No. 2

169-175

We present results on development and experimental implementation of a 1-kHz, coherent extreme ultraviolet (XUV) radiation source based on high-order harmonic generation of the femtosecond, near-infrared laser pulses produced by the titanium-doped sapphire laser system (35 fs, 1.2 mJ, 810 nm) at the Institute of Physics AS CR / PALS Centre. The source comprises a low-density static gas cell filled with a conversion medium, typically argon. The comprehensive optimization of the XUV harmonic source has been performed with respect to major parameters such as gas pressure in the cell, cell length, position of the focus of the driving laser field with respect to the gas cell position, size of the driving near-infrared laser beam, chirp of the femtosecond pulse, and the focal length of the lens deployed in the experimental setup. Harmonic spectra were recorded using an XUV transmission grating spectrometer developed specifically for this purpose. Detailed characterization of the XUV source has been performed including measurement of the XUV beam profile, M³ parameter of the beam, absolute energy, and spatial coherence.