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Autism is a pervasive severe developmental disorder that includes some typical symptoms as interpersonal communication disorders, speech development disorders, language communication skills defects, and it is also with stereotyped behaviour. In the rehabilitation training of autistic children, effective treatment techniques can improve rehabilitation training effectiveness and help develop autistic children’s social skills. The effective treatment methods for treating autistic children are mainly conventional treatment as DIR concept guidance, floor time, sandbox games, and the brain-computer interface technology treatment, which develops in artificial intelligence. The DIR concept is utilized to guide and train the emotional interaction ability of children with autism, and floor time is applied to promote functionally emotional skills in children with autism. Sandbox games treatment can help the self-expression of children with autism, create a safe and accepting environment, and eliminate children’s tension and anxiety with autism. The adoption of new brain-computer interface technology can enhance the exchange and communication ability of autistic children with the outside world, and provide a new and innovative way for the rehabilitation of autistic children.

High density carbon (HDC) ablator is one of the promising candidates toward thermonuclear ignition in inertial confinement fusion (ICF), but it shows the largest ablation front instability growth as compared to other traditional ablator materials. In this Letter, we propose a novel HDC-CH capsule design, opening the way to mitigate the hydrodynamic instabilities by using CH as the outermost ablator layer, while keeping HDC as the main ablator for maintaining the advantage of short laser pulses. The CH layer is completely ablated during the shock transit phase. In the HDC-CH design, it is the first shock reflected from the HDC/CH interface that meets the ablation front first, which reduces the ablation front growth factor by about one order of magnitude at peak implosion velocity due to the Richtmyer-Meshkov and the Rayleigh-Taylor instabilities. Our 2D simulation studies demonstrate convincingly that the ablation front growth factor of the HDC-CH capsule can be significantly reduced at both the end of shock transit phase and the time at peak implosion velocity, as compared to a HDC capsule. This novel HDC-CH capsule not only keeps the main advantage of the HDC ablator, but also has the advantage of low hydrodynamic instabilities, which can provide a larger margin toward ICF ignition. It can be applicable to both indirect-drive and direct-drive targets.

We coupled the one-dimensional multi-group radiation hydrodynamic code RDMG with the MBDCA atomic physics package, which uses the Matrix-Block Method to solve the coupled rate equations of the Detailed Configuration Accounting (DCA) non-LTE model, and applied the coupled code RDMG-MBDCA with different flux limiters fe to simulate a laser-irradiated CH-tamped Au disk experiment at the SGII laser facility. From our simulations, we found that a higher fe leads to faster laser ablation, earlier x-ray breakout time with a higher maximum x-ray flux, and an x-ray spectrum with a higher intensity. However, for the same fe, the simulation from RDMG with the DCA model shows a slower electron thermal conduction between the laser absorption region and the electron thermal conduction than that with the average-atom model. From our investigation, we can say that it is the lower ionization from DCA in the electron thermal conduction region which causes the slower electron thermal conduction between the two regions. The ...

As ~ 250J laser energy could be available for the 100ps pulse at 1.053µm wavelength on the upgraded Shenguang II laser facility in the near future, Ni–like Ta X-Ray laser driven by a single 100ps laser pulse at 0.53µm wavelength on the upgraded Shenguang II laser facility was theoretically studied. Simulations show that by properly designing, several sequential or serial targets could overcome plasma aging and refraction. One laser beam normally irradiates the Ta target, producing a 10mm long 120µm width focus line. Two sequential targets driven by one laser beam and four serial targets driven by two laser beams from opposite direction were proposed, with each target of 4mm long. If quasi-traveling pumping method was adopted, for the latter scheme, the gain-length product of ~26 could be achieved. Research in this paper would help achieve high gain or saturated Ni-like Ta X-Ray laser on upgraded Shenguang II laser facility.

Some of our recent studies on hohlraum physics are presented, mainly including simulation study on hohlraum physics experiments on SGIII prototype, the design of Au + U + Au sandwich hohlraum for ignition target, and an initial design of elliptical hohlraum and pertinent drive laser power in order to generate an ignition radiation profile.

The Hohlraum physics experiments performed on the SGIII-prototype laser facility are simulated by using our two-dimensional radiation hydrodynamic code LARED-H, and the influence of laser intensity on the two-dimensional Hohlraum simulations is studied. Both the temporal radiation temperature and the x-ray spectrum from the simulations agree well with the observations, except that the simulated M-band fraction (greater than 2 keV) is obviously smaller than the observation. According to our study, the coupling efficiency from laser to x-ray is around 70% for SGIII-prototype laser facility Hohlraums.