Neutron activation sample fast transmission device

Abstract

The invention discloses a neutron activation sample fast transmission device which includes a commutator, a sample injector, a sample receiver, an irradiator, a waste storage device, a glove box, a vacuum tank, a gas tank, an irradiation monitor, and a controller. The irradiation monitor includes a detector and a measuring instrument. The sample injector, the sample receiver, the irradiator, the waste storage device and the glove box are connected with the commutator through a sample conveying pipe. The commutator, the sample receiver, the irradiator and the glove box are connected with the vacuum tank through a gas circuit. The commutator, the sample injector, the sample receiver and the glove box are connected with the gas tank through a gas circuit. The detector is fixedly connected with the irradiator. The commutator, the sample injector, the sample receiver, the irradiator, the waste storage device, the glove box and the measuring instrument are electrically connected with the controller. The neutron activation sample fast transmission device has the functions of sample transmission, irradiation, storage, measurement, discarding, dose monitoring and over-irradiated sample suspended cooling and the characteristics of compact structure and lower noise. Moreover, the device has good stability and safety.

Description

technical field [0001] The invention belongs to the field of reactor neutron activation sample transmission technology and radioisotope preparation technology, and in particular relates to a neutron activation sample rapid transmission device. Background technique [0002] Using the thermal neutron activation of the reactor and using nuclear analysis instruments such as gamma spectrometers to conduct qualitative and quantitative analysis of the specified elements in the sample is a relatively efficient and sensitive analysis method for the determination of trace elements in the sample in the prior art. It has been used in life sciences, It is widely used in scientific research fields such as environmental science, geology, materials science and archaeology. [0003] The samples used for activation analysis need to be cleaned, heated and degassed, packaged and sealed in the target room before they enter the reactor for irradiation. According to the physical and chemical prope...

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Problems solved by technology

[0007] In order to overcome the low degree of automation existing in the prior art, manual transport of activated samples is labor-intensive and the dose of irradiation is high, and it is difficult to meet the needs of online automatic processing of various types of samples, various irradiation conditions and short-lived nuclides. , fast and accurate irradiation requirements, and the existence of key components such as commutators, irradiators, and sample transceivers, only through serial / parallel connection of multiple commutators can the transmission of samples to more than three points and serial / parallel connection be realized As a result, the structure of the sample transmission device is complicated and the space occupied is increased. The cylinder frequently produces strong vibration and noise, which is harmful to personnel and equipment. It cannot realize the on-line dose monitoring of irradiated samples and the hovering cooling of overdose samples outside the active area of ​​the stack. , high-efficiency irradiation and treatment of large batches and samples with complex components, and the risk of transmission pipelines and laboratory contamination and sample cross-contamination, the present invention provides a rapid neutron-activated sample transmission device

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