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A measurement target for medium z element transmission energy flow in ablation state

A technology for transmitting energy and measuring targets, which is applied in the fields of nuclear power generation, nuclear reactors, climate sustainability, etc., can solve the problems of deviation, error, and technical difficulty of test results, and achieves the goal of reducing systematic errors, accurate comparison, and saving experimental resources. Effect

Inactive Publication Date: 2018-08-24
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, foreign countries mainly use the implosion velocity and neutron yield obtained from spherical implosion experiments to comprehensively evaluate the influence of doped materials. This method is technically difficult and requires high experimental accuracy.
At the same time, we know that different batches of experiments will cause deviations in test results. This deviation is brought about by the experiment itself, mainly in the measurement of the transmission energy flow of doped elements, and the complete consistency of the test conditions cannot be guaranteed. , even if the two parameters are the same, but due to the uncertainty of the experiment itself, there will be errors

Method used

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  • A measurement target for medium z element transmission energy flow in ablation state
  • A measurement target for medium z element transmission energy flow in ablation state
  • A measurement target for medium z element transmission energy flow in ablation state

Examples

Experimental program
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Embodiment 1

[0042] This embodiment provides a measurement target for transmitting energy flow of Z element in an ablation state. The length of the black cavity target 1 is 1500 μm, the inner diameter is 600 μm, the thickness of the cavity wall is 30 μm, and the inner diameter of the ring formed by the convex edge is 400 μm; the first diagnostic hole 2 and the second diagnostic hole 3 are located in the middle of the black cavity target 1 , the first diagnostic hole 2 and the second diagnostic hole 3 are square holes with a length of 400 μm and a width of 250 μm; both the first sample target 4 and the second sample target 5 are squares with a side length of 460 μm, wherein the first The structure of a sample target 4 is CH / Si / CH, the thickness of each layer of the first sample target 4 is 1 μm, 0.7 μm, and 18 μm from the bottom layer to the top layer, and the structure of the second sample target 5 is CH / Ge / CH , the thickness of each layer of the second sample target 5 is 1 μm, 0.3 μm, and...

Embodiment 2

[0046] This embodiment provides a measurement target for transmitting energy flow of Z element in an ablation state. The length of the black cavity target 1 is 1500 μm, the inner diameter is 600 μm, the thickness of the cavity wall is 30 μm, and the inner diameter of the ring formed by the convex edge is 400 μm; the first diagnostic hole 2 and the second diagnostic hole 3 are located in the middle of the black cavity target 1, The first diagnostic hole 2 and the second diagnostic hole 3 are square holes with a length of 400 μm and a width of 250 μm; both the first sample target 4 and the second sample target 5 are squares with a side length of 460 μm, wherein the first The structure of the sample target 4 is CH / Si / CH, the thickness of each layer of the first sample target 4 is 1 μm, 1.2 μm, and 45 μm from the bottom layer to the top layer, and the structure of the second sample target 5 is CH / Ge / CH, The thicknesses of the layers of the second sample target 5 are 1 μm, 0.5 μm, ...

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Abstract

The invention discloses a measuring target of a Z element transmission energy flow in an ablation state. The measuring target comprises a hohlraum target, wherein the hohlraum target is of a tubular structure which has openings at upper and lower ends and is perforated in the middle, a first diagnosis hole and a second diagnosis hole which are distributed symmetrically are formed in the side wall of the hohlraum target, an angle formed between the plane on which the first diagnosis hole is formed and the plane on which the second diagnosis hole is formed is 45 degrees, a first sample target is placed in the first diagnosis hole, a second sample target is placed in the second diagnosis hole, the first sample target and the second sample target are made of different materials, and the first sample target and the second sample target form a 45-degree angle. The measuring target is simple in structure, can measure transmission energy flows corresponding to two kinds of different doping elements simultaneously, and avoids the experimental difference caused by systematic errors as much as possible.

Description

technical field [0001] The invention relates to the technical field of indirect-driven laser fusion, in particular to a measurement target for Z element transmission energy flow in an ablation state. Background technique [0002] In indirect-driven laser fusion, the ignition target usually consists of an ablative layer, a DT (Deuterium-Tritium) ice fuel layer and DT gas. Radiation heats the ablative layer to produce an inward thrust on the capsule, measured as the implosion velocity. The implosion velocity is related to the ablation rate, the greater the ablation rate, the greater the corresponding implosion velocity. At the same time, the ablation layer should also avoid the preheating of the DT ice fuel layer by high-energy X-rays (>1.8 keV), so that it can be compressed nearly isentropically. In the NIF (National Ignition Facility Project) design, CH gradient doping with Si or Ge is used to suppress high-energy X-rays and weaken their preheating of the fuel layer. H...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21B1/23G21C17/00
CPCG21B1/23G21C17/00Y02E30/10Y02E30/30
Inventor 张璐况龙钰张晓璐杨品郑建华林雉伟李丽灵江少恩
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS