Fig. 1. Experimental configuration and laser waveform used in the experiment. (a) Eight driving laser beams are used to directly drive the CHCl shells and push the fuel to collide together at the TCC. The heating laser is injected on a golden plane placed near the TCC to generate fast electrons. (b) The laser waveform and the motion patter calculated by Multi-1D.

Fig. 2. The time-resolved self-emission from the colliding area taken by the KB framing camera. (a)–(d) The X-ray emission of colliding plasmas without the heating laser beam injected. (e)–(h) The heating laser beam is injected from the left-hand side. The spots on the left-hand side are induced by the heating beam. (i) Part of (f) marked with targets and the heating laser beam.

Fig. 3. (a) Spatially resolved spectrum of shots with and without (inset) heating. (b) Profiles derived from the TCC position from the two shots (20 μm averaged on and below the TCC position), respectively.

Fig. 4. The 2D simulated results of FLASH at (a) 2.0 ns and (b) 6.3 ns. The left-hand side is the density distribution and the right-hand side is the electron temperature distribution. For clarity, the color map of temperature is logarithmic in (a) and linear in (b).

Fig. 5. Simulated results used to calculate the spectrum. (a), (b) The density and electron temperature distribution, respectively, in the vertical direction simulated by FLASH. (c) The transverse distribution of the colliding plasma. The simulated density (blue line) is compared with the experimental result (stars). The electron temperature before (red solid line) and after heating (red dotted line) is also shown here.

Fig. 6. (a) The comparison between the measured and the calculated spectrum. For the calculated results, the temperature range from 500 to 700 eV is included. The measured result is the same as the Figure 3(b) ‘with heating’ with errors marked by the shadow area. The Clⁿ⁺ population ratio of He-like ions to Li-like ions is shown in (b), together with the line ratio of ‘w’ to ‘jkl’.

Fig. 7. (a) The velocity distribution of the stagnated stage derived from FLASH. (b) Spatial emissivity of the plasma in different depths along the sight line.