Apparatus and method for measuring area topography of implosion target capsule

Abstract

The invention provides an area topography measuring device and method for an implosion target capsule, comprising: a laser module, an implosion target capsule and an imaging module arranged in sequence; wherein, the area to be measured of the implosion target capsule is provided with a preset transmittance material ;The laser module includes a nanosecond drive unit and a picosecond laser unit. The nanosecond drive unit is used to generate driving light to the implosion target to drive the implosion target to compress; when the implosion target is compressed, the picosecond laser The unit is used to generate backlight X-rays, and send the backlight X-rays to the imaging module through the area to be measured, so that the imaging module can generate a topographic measurement image of the area to be measured according to the backlight X-rays, thereby solving the problem that existing measurement methods cannot directly measure To solve the problem of the internal interface morphology of the implosion target, not only the internal interface morphology of the implosion target can be directly measured, but also the morphology of the rest of the implosion target can be measured, so as to facilitate the control of the implosion compression process , which improves the implosion performance of the implosion target pellet.

Description

technical field [0001] The invention relates to the field of measurement technology, in particular to a device and method for measuring the area shape of an implosion target capsule. Background technique [0002] Laser-driven inertial confinement fusion occurs, most of which is that the laser directly irradiates the implosion target pellet or converts it into a black cavity to irradiate the implosion target pellet with X-rays, thereby ablating the surface material of the implosion target pellet. At this time, the ablated surface The material is ejected outward, and the propulsion layer of the target pellet generates the momentum of inward movement, and the spherical convergence occurs and the fuel gas in the target pellet is compressed until a high-temperature hot spot is generated in the center of the target pellet, so that a fusion reaction occurs, and alpha particles are emitted to maintain self-sustained combustion. A large amount of energy is released to achieve ignitio...

AI Technical Summary

Problems solved by technology

[0003] Existing measurement methods mainly include backlight photography technology and core self-illumination measurement technology. Among them, backlight photography technology can measure the shell morphology of implosion target pellets, but cannot directly measure the morphology of the inner interface; The luminescence measurement technology directly measures the shape of the compressed material in the later stage of the implosion compression of the implosion target, but in the case of non-ideal spherical compression, the shape of the internal interface between the compressed material and the implosion target is not the same, therefore, Existing measurement methods cannot directly measure the internal interface morphology of the implosion target capsule

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