On-line sample activating and analyzing device

Abstract

The invention discloses an on-line sample activating and analyzing device, which includes a diverter, a sample feeder, a sample receiver, an irradiator, a waste storage, a measurement apparatus, a vacuum tank, a gas tank, a radiation monitoring device and a controller. The radiation monitoring device includes a detector I and a meter. The sample feeder, sample receiver, irradiator, waste storage, and measurement apparatus are connected to the diverter through sample conveying pipes. The diverter, the sample receiver, the irradiator and the measurement apparatus are in gas pipe connection to the vacuum tank, and the diverter, the sample receiver, the sample receiver and the measurement apparatus are in gas pipe connection to the gas tank. The detector I is in fixed connection to the irradiator. The diverter, sample feeder, sample receiver, irradiator, waste storage, measurement apparatus and meter are electrically connected to the controller. The device is compact in structure and has the automatic functions of sample conveying, irradiation, storage, measurement, abandoning, dosage monitoring, suspended cooling of over-irradiated samples, and repeated irradiation and measurement of samples. The device is good in stability and security during operation.

Description

technical field [0001] The invention belongs to the field of neutron activation sample transmission and analysis technology and radioisotope preparation technology, and in particular relates to an online sample activation and analysis 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 proper...

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the low degree of automation in the existing technology, the conditions for on-line analysis of activated samples are not available, the labor intensity of manual transport of activated samples is high and the dose of irradiation is large, and it is difficult to meet the requirements for various types of samples and various irradiation conditions. On-line automatic, fast and accurate irradiation requirements for short-lived nuclides, and the presence of key components such as commutators, irradiators, and sample transceivers can only be achieved by multiple commutators in series / parallel connection. The above-mentioned point transmission and series / parallel connection lead to complex structure and increased occupied space of the sample transmission device. The cylinder frequently generates strong vibration and noise, causing harm to personnel and equipment, and cannot realize on-line dose monitoring of irradiated samples and overdose samples. Hover cooling outside the active area of ​​the reactor, high-efficiency irradiation and processing of large batches and samples with complex components, and the risk of transmission pipeline and laboratory contamination and sample cross-contamination, etc., the present invention provides an online sample activation and analysis device

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