Experimental study of radiation temperature for gold hohlraum heated with 1 ns，0.35 μm lasers on SG-Ⅲ prototype laser facility

Li, Sanwei; Yi, Rongqing; Jiang, Xiaohua; He, Xiaoan; Yan-Li, Chui; Liu, Yonggang; Ding, Yongkun; Liu, Shenye; Lan, Ke; Li, Yongsheng; Chang-Shu, Wu; Gu, Peng; Wen-Bing, Pei; Xin, He

doi:10.7498/aps.58.3255

Cited by 13 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has 8 driving laser beams with the same incident angles which are the same as SG-II laser, and it also has a backlight beam (or a Thomson scattering probe beam). The hohlraum energetics [8][9][10], radiation uniformity [11], LPI [12][13][14], planar RT instability [15,16] and integrated implosion performance [17] were studied on the SG-III prototype platform. For the integrated implosion experiments using 1 ns squared pulse, the YOC reached 70% when the implosion was dominated by shock compression, and it decreased to about 5% when the shell thickness was increased and the implosion was dominated by inertial compression at the convergence-ratio similar to that on SG-II.…”

Section: Introductionmentioning

confidence: 99%

First integrated implosion experiments on the SG-III laser facility

Huang

et al. 2018

Plasma Phys. Control. Fusion

View full text Add to dashboard Cite

We present the first integrated implosion experiments which were carried out on the SG-III Laser facility in 2015. Vacuum hohlraums and squared laser pulses were used in the experiments. The purpose of the experiments was to demonstrate the one-dimensional implosion performance at low-convergence ratios. To characterize the implosion performance, the hohlraum energetics, the implosion dynamics and the nuclear products were measured. In particular, the radiation flux was diagnosed through laser entrance hole at different angles by an array of flat response detectors, and the energy and the spectrum of the back-scattered lasers were monitored for 8 laser beams which correspond to 2 beams in each cone at the lower hemisphere. Moreover, the hotspot shape was imaged using KB microscopes of high spatial resolution simultaneously from the equator and polar views. Taking advantage of the high resolution, some detailed structures in the hotspots were noticed. For the best implosion performances, the neutron yields over 1D calculation reached 50% at the convergence-ratios of 15.

show abstract

Section: Introductionmentioning

confidence: 99%

First integrated implosion experiments on the SG-III laser facility

Huang

et al. 2018

Plasma Phys. Control. Fusion

View full text Add to dashboard Cite

show abstract

A novel flat-response x-ray detector in the photon energy range of 0.1–4 keV

Jiang

Liu

et al. 2010

Review of Scientific Instruments

106

View full text Add to dashboard Cite

A novel flat-response x-ray detector has been developed for the measurement of radiation flux from a hohlraum. In order to obtain a flat response in the photon energy range of 0.1-4 keV, it is found that both the cathode and the filter of the detector can be made of gold. A further improvement on the compound filter can then largely relax the requirement of the calibration x-ray beam. The calibration of the detector, which is carried out on Beijing Synchrotron Radiation Facility at Institute of High Energy Physics, shows that the detector has a desired flat response in the photon energy range of 0.1-4 keV, with a response flatness smaller than 13%. The detector has been successfully applied in the hohlraum experiment on Shenguang-III prototype laser facility. The radiation temperatures inferred from the detector agree well with those from the diagnostic instrument Dante installed at the same azimuth angle from the hohlraum axis, demonstrating the feasibility of the detector.

show abstract

Investigation of radiation flux in certain band via the preheat of aluminum sample

et al. 2013

View full text Add to dashboard Cite

Quantitative evaluation of the fractions of high energy x-rays in a hohlraum is crucial to the indirect driven-drive scheme of inertial confinement fusion and many other applications in high energy density physics. Preheat of a sample due to x-rays sensitively depends on optical thin photons. Analyzing the motion of a sample due to preheat can thus provide valuable information of those x-rays. In this article, we propose a method to infer the temporal evolution of the x-ray fluxes in the bands of our interest. By matching the simulation results to the motions of an aluminum sample, we can infer the time-resolved x-ray fluxes around the aluminum K-edge and the gold M-band inside the hohlraum.

show abstract

Experimental study of radiation temperature for gold hohlraum heated with 1 ns，0.35 μm lasers on SG-Ⅲ prototype laser facility

Cited by 13 publications

References 0 publications

First integrated implosion experiments on the SG-III laser facility

First integrated implosion experiments on the SG-III laser facility

A novel flat-response x-ray detector in the photon energy range of 0.1–4 keV

Investigation of radiation flux in certain band via the preheat of aluminum sample

Contact Info

Product

Resources

About