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Neutron tube target for associated alpha particle detector

A technology of neutron tubes and detectors, which is applied in the field of nuclear technology and applications, can solve the problems of increased volume of neutron tubes, increased length of neutron tube targets, and restrictions on the application of neutron tubes. The effect of streaming power

Pending Publication Date: 2019-03-08
INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this structural design increases the target length of the neutron tube, thereby increasing t

Method used

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  • Neutron tube target for associated alpha particle detector

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Effect test

Embodiment 1

[0017] The energy of the deuterium-tritium mixed ion beam generated by the Penning source is 80keV, the current intensity is 300μA, and it is incident on the target piece 2 of titanium material, and the heat flux density reaches 500W / cm 2 , in the natural convection state of the external air, the temperature of the target piece 2 is about 180°C, and the neutron yield can reach 1.1×10 9 n / s or more.

Embodiment 2

[0019] The embodiment of this embodiment is basically the same as that of Embodiment 1, the main difference is that a fan is installed outside the neutron tube target at a position opposite to the heat sink, the wind speed of the fan is 1m / s, if the surface temperature of the target sheet 2 is maintained to be 180 ℃, the heat flux density of the target piece 2 can reach 1KW / cm 2 , the corresponding deuterium-tritium mixed ion beam current can be increased to 600μA, and the neutron yield is increased by 2 times, reaching 2.2×10 9 n / s or more.

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Abstract

The invention discloses a neutron tube target for an associated alpha particle detector. The section of the neutron tube target is pistol-shaped; cooling fins are installed at a pistol-shaped notch; and while the size of the neutron tube target is not increased additionally, heat loaded on a target piece can be rapidly taken away, so that the target piece is guaranteed to be in a relatively low temperature state; the target piece can bear higher beam current power, and then the neutron yield is improved. According to the neutron tube target for the associated alpha particle detector, in an airnatural convection state, the temperature of the target piece can be maintained to be below 200 DEG C, the bombardment of a deuterium ion beam current with the power density of 500 W/cm<2> can be borne, and the neutron yield can reach below 1.1X10<9> n/s.

Description

technical field [0001] The invention belongs to the field of nuclear technology and application, and in particular relates to a neutron tube target with an accompanying alpha particle detector. Background technique [0002] The neutron tube accompanying the alpha particle detector is basically cylindrical, and the target plate of this neutron tube is generally placed at an angle of 45° to the direction of the incident deuterium particles, so as to ensure that the charged particles produced by the nuclear reaction are received by the detector However, this installation method causes the target to be far away from the bottom shell of the neutron tube, which is not conducive to heat dissipation; at the same time, because the beam spot of the neutron tube with accompanying particle detector is small, the beam bombarding the target will cause local heat The power density is very high, causing the temperature inside the neutron tube target to rise, resulting in a decrease in the c...

Claims

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Application Information

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IPC IPC(8): H05H3/06H05H6/00G01T7/00H05K7/20
CPCH05H3/06H05H6/00H05K7/20409G01T7/00
Inventor 刘猛唐建言杰张钦龙
Owner INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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