Device and method for measuring regional morphology of implosion pellet

Abstract

The invention provides a device and a method for measuring the regional morphology of an implosion pellet. The device comprises a laser module, an implosion pellet and an imaging module which are arranged in sequence. A to-be-detected area of the implosion pellet is provided with a preset transmittance material; the laser module comprises a nanosecond driving unit and a picosecond laser unit, andthe nanosecond driving unit is used for generating driving light to the implosion pellet so as to drive the implosion pellet to be compressed; after compression of the implosion pellet is finished, the picosecond laser unit is used for generating backlight X-rays; the backlight X-rays are sent to the imaging module through the to-be-detected area; and thus the imaging module generates a topographymeasurement image of the to-be-measured area according to the backlight X-rays. Therefore, a problem that the inner interface morphology of the implosion pellet cannot be directly measured by the existing measurement method is solved, the inner interface morphology of the implosion pellet can be directly measured, and the morphology of any other area of the implosion pellet can be measured, so that the implosion compression process is convenient to control, and the implosion performance of the implosion pellet is improved.

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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