Two-channel high-resolution quasi-monochromatic X-ray imager for Al and Ti plasma

Do, Alexandre; Briat, M.; Baton, S. D.; Krumrey, Michael; Lecherbourg, L.; Loupias, B.; Pérez, F.; Renaudin, P.; Rubbelynck, C.; Troussel, P.

doi:10.1063/1.5042069

Cited by 6 publications

(2 citation statements)

References 12 publications

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“…4,5 This was later upgraded to have 2 channels (FUHRIx2). 13 The updated version is composed of two FZPs fabricated on the same chip (called a bi-lens) able to image simultaneously two different K-shell emission lines of Al.…”

Section: Introductionmentioning

confidence: 99%

Characterization of a two-channel, high resolution hard x-ray microscope using Fresnel zone plates for laser-plasma interaction experiments

Briat

Chaleil

et al. 2018

Review of Scientific Instruments

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New X-ray imaging techniques are currently being developed at the "Commissariatà l'énergie atomique et auxénergies alternatives" in the context of Inertial Confinement Fusion. Fresnel zone plates (FZPs) are being considered as they can perform high-resolution and high-flux imaging in the X-ray domain. Here we present the characterization of a bi-lens FZPs resolution used in an imager prototype, designed for the LULI2000 laser facility. Characterization was performed on a synchrotron radiation facility and on a femtosecond laser facility. The resolution of the two FZP channels was measured to be between 2.4 µm and 5.2 µm and the expected total resolution for the diagnostic was to be 3.3 µm.

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Section: Introductionmentioning

confidence: 99%

Characterization of a two-channel, high resolution hard x-ray microscope using Fresnel zone plates for laser-plasma interaction experiments

Briat

Chaleil

et al. 2018

Review of Scientific Instruments

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“…The idea to use a diffraction for recording hard X-ray images has been published in 1963 [29]. The application of this idea known as Fresnel Phase Zone Plate(FPZP) designed for focusing and imaging hard X-ray [30,31]. In our case, it was used to image Ti−K α and Ti−He α emissions from the isochorically heated region.…”

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confidence: 99%

Petapascal Pressure Driven by Fast Isochoric Heating with a Multipicosecond Intense Laser Pulse

Matsuo¹,

Higashi²,

Iwata³

et al. 2020

Phys. Rev. Lett.

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Fast isochoric laser heating is a scheme to heat a matter with relativistic-intensity (> 10 18 W/cm 2 ) laser pulse or X-ray free electron laser pulse. The fast isochoric laser heating has been studied for creating efficiently ultra-high-energy-density (UHED) state. We demonstrate an fast isochoric heating of an imploded dense plasma using a multi-picosecond kJ-class petawatt laser with an assistance of externally applied kilo-tesla magnetic fields for guiding fast electrons to the dense plasma.The UHED state with 2.2 Peta-Pascal is achieved experimentally with 4.6 kJ of total laser energy that is one order of magnitude lower than the energy used in the conventional implosion scheme. A two-dimensional particle-in-cell simulation reveals that diffusive heating from a laserplasma interaction zone to the dense plasma plays an essential role to the efficient creation of the UHED state.Power laser apparatus can inject a plenty of energy to a matter in a small volume within a short time duration. The matter becomes a high-energy-density state that is applicable to various scientific researches such as laboratory astrophysics [1] and several kind of radiation sources: X-rays, charged particles, and neutrons [2,3]. Fast isochoric heating of solid target to create such highenergy-density states have been demonstrated by short pulse laser [4] and X-ray free electron laser [5,6]. The fast isochoric laser heating of imploded plasma is one of the scheme to create ultra-high-energy-density (UHED) state, which is equivalent to the state at the center of the sun, for the inertial confinement fusion (ICF) science.In conventional implosion, kinetic energy of the imploded shell is converted to the internal energy of the compressed matter at the maximum compression. A UHED state with 36 Peta-Pascal (PPa) was achieved on the National Ignition Facility with 1.8 MJ of laser energy by the indirect X-ray driven implosion [7]. The OMEGA laser facility with 30 kJ of laser energy produced 5.6 PPa of UHED by the direct laser-driven implosion [8]. The current central ignition scheme requires enormous laser energy to create UHED state. The significant growth of hydrodynamic instabilities during the compression causes the hot spark mixing with the cold dense fuel and prevents efficient creation of UHED state.In the context of ICF, the fast isochoric heating also known as the fast ignition had been proposed as an alternative approach [9]. This approach separates compres-sion and heating processes to avoid the mixing, using a more stable compression followed by an external energy injection whose time scale is much shorter than the implosion time scale. Hence, it potentially leads to higher gain by increasing the mass of the compressed fuel .A cone-in-shell target is commonly used in the integrated fast-isochoric-heating experiments, since a dense plasma core, which is produced by the laser-driven implosion, is surrounded by a long-scale-length coronal plasma. The cone preserves a vacuum channel in the coronal plasma for the heating laser pulse to...

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High-resolution x-ray radiography with Fresnel zone plates on the University of Rochester’s OMEGA Laser Systems

Marshall

Ivancic

Mileham

et al. 2021

Review of Scientific Instruments

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Experiments performed at the Laboratory for Laser Energetics with a continuous-wave (cw) x-ray source and on the OMEGA and OMEGA EP Laser Systems [Boehly et al., Opt. Commun. 133, 495 (1997) and Waxer et al., Opt. Photonics News 16, 30 (2005)] have utilized a Fresnel zone plate (FZP) to obtain x-ray images with a spatial resolution as small as ∼1.5 μm. Such FZP images were obtained with a charge-coupled device or a framing camera at energies ranging from 4.5 keV to 6.7 keV using x-ray line emission from both the cw source and high-intensity, laser-beam–illuminated metal foils. In all cases, the resolution test results are determined from patterns and grids backlit by these sources. The resolutions obtained are shown to be due to a combination of the spectral content of the x-ray sources and detector resolution limited by the magnification of the images (14× to 22×). High-speed framing cameras were used to obtain FZP images with frame times as short as ∼30 ps. Double-shell implosions on OMEGA were backlit by laser-irradiated Fe foils, thus obtaining a framing-camera–limited, FZP-image resolution of ∼3 μm–4 μm.

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Two-channel high-resolution quasi-monochromatic X-ray imager for Al and Ti plasma

Cited by 6 publications

References 12 publications

Characterization of a two-channel, high resolution hard x-ray microscope using Fresnel zone plates for laser-plasma interaction experiments

Characterization of a two-channel, high resolution hard x-ray microscope using Fresnel zone plates for laser-plasma interaction experiments

Petapascal Pressure Driven by Fast Isochoric Heating with a Multipicosecond Intense Laser Pulse

High-resolution x-ray radiography with Fresnel zone plates on the University of Rochester’s OMEGA Laser Systems

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