Study of the Performance of a Streaked Optical Pyrometer System for Temperature Measurement of Shocked Materials

Chen, Zhang; Liu, Hao; Wang, Zhebin; Jiang, Xiaohua; Zhang, Huige; Liu, Yonggang; Li, Zhichao; Li, Sanwei; Yang, Dong; Ding, Yongkun; Zhao, Baozhen; Hu, Guang-yue; Zheng, Jian

doi:10.1088/1009-0630/16/6/06

Cited by 5 publications

(1 citation statement)

References 15 publications

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“…Step thicknesses of the five-step-shaped Al were designed as ∼25 µm, ∼50 µm, ∼75 µm, ∼100 µm, and ∼125 µm. The shock velocities in Al were measured by a streaked optical pyrometer (SOP) [24]. The ablator sample was mounted on the other diagnostic hole.…”

Section: Experimental Arrangementmentioning

confidence: 99%

Study of the radiation temperature on ablator by using the shock wave technique

Ren

Zhang

et al. 2022

Plasma Phys. Control. Fusion

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A new diagnostic platform for more accurate diagnosis peak radiation temperature on ablator has been proposed. Nearly constant radiation temperature was obtained by 2-LEHs spherical hohlraum. And peak radiation temperature on ablator was determined by the shock wave technique. A high quality burn-through image of 2-step-shaped Au ablator was obtained in the experiment. The simulated mass ablation rate agrees well with the experimental result. On the other hand, the peak radiation temperature measured by flat-response X-ray detector(F-XRD) outside the hohlraum was of ~20eV's lower than that obtained by the shock wave technique. This deviation may result in ~20%'s decrease of mass ablation rate in simulation. Thus the new diagnostic platform can provide more accurate peak radiation temperature diagnosis. It can greatly support the ICF ignition target design.

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Section: Experimental Arrangementmentioning

confidence: 99%

Study of the radiation temperature on ablator by using the shock wave technique

Ren

Zhang

et al. 2022

Plasma Phys. Control. Fusion

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Study of M-band X-ray preheating effect on shock propagation via streaked optical pyrometer system at SG-III prototype lasers

et al. 2019

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The M-band X-ray (1.6–4.4 keV) preheating and shock temperature of aluminum (Al) foil coated on a thick polystyrene (CH) layer is experimentally measured using a streaked optical pyrometer system (SOP) in the SG-III prototype laser facility for the first time. Multi-group hydrodynamic simulation captures the main characteristics of rear surface emission. Compared with the unpreheated target with bromine (Br) doped, M-band X-rays have a large impact on shock propagation inside the undoped target. Preheating changes target the initial state and generate a broader shock front, resulting in drastic variation in rear surface emission features. By comparing sensitivity analysis in the simulation and experimental uncertainty range, it is found that the SOP measurement could achieve valuable information on the shock transition time and unique emission profile, offering reliable boundary and benchmarks for simulation and analysis. Proper evaluation on the radiation source, including both the flux and the spectrum, and material opacities is essential for data interpretation. This study could promote our understanding and predictive capability required for inertial confinement fusion studies.

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First-principles method for x-ray Thomson scattering including both elastic and inelastic features in warm dense matter

Zhang

et al. 2020

Phys. Rev. B

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Study of the Performance of a Streaked Optical Pyrometer System for Temperature Measurement of Shocked Materials

Cited by 5 publications

References 15 publications

Study of the radiation temperature on ablator by using the shock wave technique

Study of the radiation temperature on ablator by using the shock wave technique

Study of M-band X-ray preheating effect on shock propagation via streaked optical pyrometer system at SG-III prototype lasers

First-principles method for x-ray Thomson scattering including both elastic and inelastic features in warm dense matter

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