Mirror high-temperature furnace device for neutron diffraction sample in-situ experiment
A technology of high temperature furnace and heat preservation device, applied in the field of in-situ experiments of neutron diffraction samples, can solve the problems of high count rate, disadvantage, weakened beam intensity, etc., to reduce absorption attenuation, improve heating efficiency, and ensure working stability. Effect
Active Publication Date: 2014-06-25
CHINA INSTITUTE OF ATOMIC ENERGY
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Problems solved by technology
Its main disadvantage is that because the whole device adopts a closed structure, neutrons need to penetrate the furnace wall to reach the sample, and the diffracted neutron beam passes through the furnace wall again to reach the detector. The beam intensity is weakened due to the absorption of neutrons by the furnace wall. Not conducive to experimental measurements at high count rates
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[0015] The present invention will be described in detail below with reference to the drawings and embodiments.
[0016] The mirror high-temperature furnace device provided by the present invention is used for in-situ high-temperature loading experiments of neutron diffraction spectrometer samples. The sample is generally a block or strip metal solid sample.
[0017] Such as figure 1 As shown, the mirror surface high-temperature furnace device is a vertical structure as a whole, divided into three parts: upper, middle and lower parts, usually located on the sample table. The upper and lower parts are the ellipsoidal reflection and heat preservation devices 1, 2. The upper and lower ellipsoid reflection and heat preservation devices 1, 2 are supported and connected by several support rods 3. In this embodiment, there are three support rods, which are evenly distributed in the center of the crucible 5. On the circumference where the position is the center of the circle, the angle bet...
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The invention relates to a neutron diffraction sample in-situ experiment technology, in particular to a mirror high-temperature furnace device for a neutron diffraction sample in-situ experiment. The structure of the device comprises upper and lower ellipsoid reflecting heat insulation devices, and ellipsoid mirrors are arranged in the ellipsoid reflecting heat insulation devices, wherein the upper and the lower ellipsoid reflecting heat insulation devices are connected through a plurality of supporting rods; a crucible for placing a sample is arranged in a space encircled by the plurality of supporting rods through a horizontal bracket; and a heating device is arranged in the crucible. The middle parts of the mirror high-temperature furnace device are supported and connected by adopting the supporting rods, so that a smooth path through which neutron beam current enters and passes out of the sample is ensured, and the absorption attenuation of the neutron beam current is reduced.
Description
Technical field [0001] The invention relates to an in-situ experiment technology of a neutron diffraction sample, in particular to a mirror high-temperature furnace device used for an in-situ experiment of a neutron diffraction sample. Background technique [0002] In the in-situ high-temperature loading experiment of the neutron diffractometer sample, a high-temperature furnace device is required. The existing mirror high-temperature furnace device for neutron diffraction is an integrally closed structure. The sample is placed inside a closed furnace body and uses two halogen lamp heating sources. The furnace body is equipped with two upper and lower coaxial ellipsoidal mirrors. , Through the reflection of the ellipsoidal mirror surface for focusing and heat preservation. The main disadvantage is that because the entire device adopts a closed structure, neutrons need to penetrate the furnace wall to reach the sample, and the diffracted neutron beam passes through the furnace wa...
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IPC IPC(8): G01N23/20F27B17/02
Inventor 陈东风刘蕴韬高建波李峻宏王洪立孙凯肖红文韩松柏李眉娟张莉吴展华李天富焦学胜梁峰杨浩智王子军胡瑞
Owner CHINA INSTITUTE OF ATOMIC ENERGY