Deposition device for preparing high-resolution alpha radiation source by magnetohydrodynamic electrodeposition

Abstract

The invention belongs to the radioactive source preparation technology, and particularly relates to a deposition device for preparing a high-resolution alpha radioactive source through a magnetohydrodynamics electro-deposition method. The deposition device structurally comprises a deposition tank body containing deposition liquid. A permanent magnet is arranged on the outer side of the deposition tank body. An anode wire stretches into the deposition liquid from the top of the deposition tank body. The bottom of the deposition tank body is sealed through a threaded bottom cover. A hole is formed in the center of the threaded bottom cover. A cathode guide-out gasket and a cathode deposition source sheet are sequentially arranged in the threaded bottom cover at the bottom of the deposition tank body from bottom to top. The cathode guide-out gasket is in close contact with the cathode deposition source sheet. The bottom of the cathode guide-out gasket is connected with a cathode guide-out wire. The cathode guide-out wire is guided out of the hole of the threaded bottom cover and connected with the negative pole of a power source. According to the deposition device, the shield function of distance, matter and the like on a magnetic field is reduced to the greatest extent, and therefore the positive function of the added magnetic field on deposition can be fully achieved, and the energy resolution of the prepared source can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of radioactive source preparation, and in particular relates to a deposition device for preparing a high-resolution alpha radioactive source by a magnetohydrodynamic electrodeposition method. Background technique [0002] In recent years, with the increase of nuclear energy utilization, α-spectroscopy has been widely used in radioactivity measurement in various fields, such as nuclear safeguard analysis, nuclear safety, nuclear fission, nuclear data and environmental detection and other fields. Alpha spectroscopy plays an increasingly important role in the qualitative and quantitative analysis of actinides. At present, when performing α energy spectrum measurement on α radiation sources, the measurement accuracy mainly depends on the quality of the prepared α radiation sources. High-quality solid radiation sources usually form a uniform thin layer of radioactive substances. Electrodeposition is commonly use...

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Problems solved by technology

The device has the following problems: (1) there are circulating cooling water, glass, metal and other materials spaced outside the deposition tank that holds the deposition liquid. The actual distance is farther, which will also weaken the effect of the magnetic field on the deposition; (2) There are four stainless steel bolts, two threaded stainless steel plates at the bottom, a stainless steel plate at the top and four fixing clips on the periphery of the deposition tank. The volume and weight of the tank are large, and the operation is also very inconvenient, especially when installing before deposition and disassembling the device after deposition; (3) when the deposition tank uses four stainless steel clips to fix the bolts, the upper backing plate and the bottom plate, both Manual operation, if the force is uneven, it is easy to deform the sealing gasket and cause leakage of radioactive solution due to lax sealing

[0004] In the current public literature, there is no disclosure of a deposition device for preparing a radioactive source using the magnetohydrodynamic electrodeposition technique

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