Ion source used for isotope electromagnetic separator

Abstract

The invention belongs to the technical field of an isotope electromagnetic separator, and specifically relates to an ion source used for the isotope electromagnetic separator. The ion source is placed in a magnetic field, and the direction of the magnetic line of force of the magnetic field is perpendicular to the ion beam leading direction in the ion source; the ion source comprises an arc discharging chamber, a crucible connected with the back part of the arc discharging chamber, a crucible heating furnace cylinder arranged on the periphery of the crucible, a negative electrode and filaments arranged on the top of the arc discharging chamber, and a leading electrode arranged on the front part of the arc discharging chamber; and the leading electrode is provided with leading seams capable of leading ion beams, wherein the arc discharging chamber and the crucible are in direct sealing connection. The conventional ion source used for the isotope electromagnetic separator is relatively poor in air tightness, which causes increasing of dark current in the ion source, influences vapor density of a working substance, and wastes expensive ion source material; and the ion source provided by the invention is high in air tightness, so that dark current and an ignition phenomenon are reduced, the raw material utilization rate of the ion source and the abundance of separated isotopes are improved, and the working time of the electromagnetic separator is prolonged.

Description

technical field [0001] The invention belongs to the technical field of isotope electromagnetic separators, in particular to an ion source for isotope electromagnetic separators. Background technique [0002] The electromagnetic separation method has an indispensable position in the field of isotope separation. The electromagnetic separation method uses ions with the same energy and different masses to achieve isotope separation in a transverse magnetic field with different rotation radii. The isotope electromagnetic separator is a device that uses electromagnetic separation to separate isotopes. The ion beam to be separated is emitted from the ion source of the isotope electromagnetic separator, separated by the magnetic field in the isotope electromagnetic separator, and then received by the receiving device to complete the separation of isotopes. [0003] The electromagnetic separation method is the only feasible method to obtain the high-abundance rubidium isotopes requi...

AI Technical Summary

Problems solved by technology

The traditional arc discharge chamber (button arc chamber) is composed of two parts. Under long-term work, the uneven heating of the arc discharge chamber will cause the arc discharge chamber to expand unevenly, and gaps will appear to reduce the airtightness of the ion source.

These problems lead to the increase of dark current in the ion source, affect the vapor density of the working substance, waste expensive ion source raw materials, and lead to an increase in the degree of pollution of the ion source, increase the frequency of cleaning, and increase the cost of use.

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