Method for detecting distribution of deuterium particle beams

Abstract

The invention provides a method for detecting the distribution of deuterium particle beams. The method is characterized by comprising the following steps: (1) arranging a CR-39 solid state nuclear track detector on the rear surface of a deuterium target or a tritium target of an accelerator based neutron source; (2) recording a number of tracks on the surface of the CR-39 solid state nuclear track detector after the accelerator based neutron source is irradiated by a microscope; and (3) by a mapping relation between a deuterium particle number N on the surface of the deuterium target or the tritium target and the number X of the tracks on the surface of the CR-39 solid state nuclear track detector, inverting the distribution of the deuterium particle beams by the number X of the tracks. According to the method, the measurement on the distribution of the deuterium particle beams can be implemented and the interference of impurity particles is effectively avoided; the distribution of high-current deuterium particle beams in an order range of milliampere to ampere can be measured; and the thermal effect generated by energy deposition in the direct action process of the high-current particle beams and the CR-39 solid state nuclear track detector is effectively overcome.

Description

technical field [0001] The invention belongs to the fields of accelerator physics and neutron physics, in particular to a method for detecting the distribution of deuterium particle beams by using a CR-39 solid nuclear track detector. Background technique [0002] CR-39 solid nuclear track detector is an integral detector. When charged particles enter the solid nuclear track material, radiation damage will be caused around the track along its range, forming a latent track. The damage radius is generally only nanometers. When this kind of sneak track is chemically etched under certain conditions, the principle that the damaged area is more likely to be corroded than the undamaged area makes the sneak track in the detector material magnified, so as to reach the micron that can be observed by ordinary light and light microscopes. level to record particle counts and distributions. CR-39 solid nuclear track detector is the most sensitive solid nuclear track detector found so far...

AI Technical Summary

Problems solved by technology

[0003] It is publicly reported that the main feature of the CR-39 solid nuclear track detector to detect the particle beam distribution is to detect the beam distribution of a large accelerator and the beam intensity is small (microampere level or lower), which has not been used. CR-39 solid nuclear track detector detects relevant reports on the distribution of high-current deuterium particle beams. The main reason is that the thermal effect of energy deposition under the action of strong beams changes the performance of CR-39 solid nuclear track detector

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