Filled aerogel ICF cryogenic target system

Abstract

The invention discloses a filled aerogel ICF cryogenic target system which comprises a gold cavity, wherein a pellet is fixed in the center inside the gold cavity through a support membrane; a fusion material is arranged inside the pellet; a laser incident hole is formed in the top of the gold cavity; a thermal mechanical structure is arranged outside the gold cavity; the upper part and the lower part of the thermal mechanical structure are integrally connected through a connecting structure; a cryogenic ring is arranged on the thermal mechanical structure; a thin aerogel layer is arranged on the inner wall of the gold cavity; the cavity of the thin aerogel layer is filled with a filling gas; filling aerogel is arranged at the upper end and the lower end of the thin aerogel layer; the filling aerogel is fixed through fixing membranes; a cavity of the thin aerogel layer between the upper filling aerogel and the lower filling aerogel is filled with the filling gas. Due to existence of the thin aerogel layer and the filling aerogel, gold plasma expansion can be inhibited, the content of the filling gas inside can be reduced, and the influence of natural convection flow can be reduced, so that the temperature uniformity of the temperature of the pellet can be optimized, and the ignition success rate can be increased.

Description

technical field [0001] The invention belongs to the technical field of targets in inertial confinement fusion (ICF), in particular to an airgel-filled ICF freezing target system. Background technique [0002] Inertial Confinement Fusion (ICF) is a nuclear fusion technology that uses laser shock waves to trigger nuclear fusion reactions, and is one of the main methods to achieve catastrophic ignition. [0003] In inertial confinement fusion, the ignition conditions require high temperature, high density and a certain scale, and the use of laser drive also requires pressurization means. The general process is: the laser first heats the surface of the spherical target uniformly from all directions, forming a layer of high temperature on the target surface Thin plasma, and then when the laser passes through this layer of thin plasma, it is absorbed by the inverse bremstronic and abnormal absorption process of some plasmas. The absorbed laser energy rapidly heats the electrons, ...

AI Technical Summary

Problems solved by technology

[0004] At this stage, ICF has not been commercialized yet, and is still in the research stage. The improvement of its ignition efficiency still needs to be studied. Whether the ignition is successful or not and the efficiency are closely related to the comprehensive performance of the cryogenic target

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