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Device and method for forming ice layer of frozen target pill

A technology of frozen targets and ice layers, which is applied in the target field of inertial confinement fusion, can solve the problems of high technical difficulty and unguaranteed success rate, and achieve the effect of reliable operation, simple structure, and improved target success rate

Active Publication Date: 2020-06-09
CHUZHOU HONGMING ELECTROMECHANICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The homogenization technology used mainly includes temperature gradient, infrared light heating and other methods, but the homogenization technology is difficult at this stage, and the success rate cannot be guaranteed

Method used

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  • Device and method for forming ice layer of frozen target pill
  • Device and method for forming ice layer of frozen target pill
  • Device and method for forming ice layer of frozen target pill

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1) Before the fuel is stratified, the heater 9 does not heat, and the system is in dynamic equilibrium at this time, the gas 2 filled in the target pellet 4 is in direct contact with the liquid fusion fuel 8, the gas 2 is in a saturated state, and the reading read by the pressure gauge 6 is the saturation pressure value.

[0022] 2) Reference figure 1 , through the frozen target structure to cool down the target pellets to below 15-18K (lower than the triple point temperature of 18.71K), at the same time turn on the heater 9, and control the flow meter 5 through the flow monitor 11 to keep the flow at 0.1- 0.5 mg / s or less, at this time the pressure of the filling gas 2 in the target pellet 4 is lower than 5-10 kPa (17.1 kPa lower than the triple point pressure).

[0023] 3) After the filling gas 2 is injected into the target pellet, desublimation occurs, and the filling gas 2 close to the target shell 1 is directly solidified from the gas into a solid ice layer, which...

Embodiment 2

[0027] 1) Before the fuel is stratified, the heater 9 does not heat, and the system is in dynamic equilibrium at this time, the gas 2 filled in the target pellet 4 is in direct contact with the liquid fusion fuel 8, the gas 2 is in a saturated state, and the reading read by the pressure gauge 6 is the saturation pressure value.

[0028] 2) Reference figure 1 , through the frozen target structure to cool down the target pellets to below 15-18K (lower than the triple point temperature of 18.71K), at the same time turn on the heater 9, and control the flow meter 5 through the flow monitor 11 to keep the flow at 0.1- 0.5 mg / s or less, at this time the pressure of the filling gas 2 in the target pellet 4 is lower than 5-10 kPa (17.1 kPa lower than the triple point pressure).

[0029] 3) After the filling gas 2 is injected into the target pellet, desublimation occurs, and the filling gas 2 close to the target shell 1 is directly solidified from the gas into a solid ice layer, which...

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Abstract

The invention discloses a cryogenic target pellet ice layer formation device and method. The device comprises a cryogenic target pellet (4), a fuel tank (7), a heater (9) and a computer (12); the cryogenic target pellet (4) is communicated with the fuel tank (7) through a gas filling tube (3); fusion fuel (8) and the heater (9) are arranged in the fuel tank (7); and the computer (12) is used for controlling the heater (9) to work. The method includes the following steps that: 1) before the fuel is layered, the heater 9 does not perform heating; 2) the target pellet (4) is cooled, and the heater (9) is turned on; 3) a filling gas (2) is injected into the target pellet, then, condensates and attaches to the inner surface of a target shell (1); and 4) when the outlet end surface of the gas filling tube (3) is a flatly cut surface, the heater (9) generates pressure pulses so as to make the gas filling tube (3) further filled with the gas, and when the outlet end surface of the gas fillingtube (3) is an obliquely cut surface, the gas filling tube (3) is continuously filled with the gas; and 5) gas filling is stopped, and the gas filling tube (3) is plugged, and the gas filling tube (3)is disconnected, a smooth ice layer is formed by means of beta homogenization inside the target (4).

Description

technical field [0001] The invention belongs to the technical field of targets in inertial confinement fusion (ICF), and in particular relates to a device and method for forming an ice layer of a frozen target pellet. 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 fusion 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 ene...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21B1/19
CPCG21B1/19Y02E30/10
Inventor 陈鹏玮
Owner CHUZHOU HONGMING ELECTROMECHANICAL CO LTD