Sample nuclear track in-situ etching observation method and equipment

Abstract

The invention discloses a sample nuclear track in-situ etching observation method and equipment. The sample nuclear track in-situ etching observation method comprises steps of putting a sample included in an isolation object between an etching liquid and a microscope objective, isolating the microscope objective from the etching liquid or volatile gas in the etching liquid through the isolation object so as to prevent contact, and performing real-time in-situ observation on the nuclear track etching process of the sample through the microscope objective. The method overcomes the difficulty inthe existing method that the nuclear track etching process cannot be observed in situ.

Description

technical field [0001] The invention relates to an in-situ etching observation method and equipment for sample nuclear track, belonging to the fields of geochronology and nuclear track etching. Background technique [0002] Energetic ions traveling through solids create long, narrow damage tracks. Nuclear pore membranes use high-energy ions to penetrate organic high-resolution plastic films, leaving a narrow radiation-damaged track. After the track is oxidized, it can be etched with appropriate chemical reagents to turn the channels on the film into cylindrical micropores. In geochronology, using U 238 Chronological information can be extracted by quantifying the formation tracks of fragments produced by spontaneous fission. Utilizing the characteristic that the length of the track becomes shorter after heating, the thermal history experienced by the mineral can also be recovered by extracting the length information of the track. [0003] The nuclear track with nanometer...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method and equipment for in-situ observation of nuclear track etching of samples, which solves the problem that the existing etching method cannot observe the etching process of nuclear track in situ, and effectively isolates the etching process by using the sample and the etching solution container. The liquid and the microscope objective lens can prevent the contact of the etching solution from damaging the microscope objective lens. At the same time, by controlling the thickness of the sample, the light can penetrate the sample, thus realizing the real-time in-situ observation of the nuclear track etching process in the sample.

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