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讨论了为获得放射虫化石的高质量的二次电子图像所采用的试样制备方法。通过多次试验，认为放射虫化石的表面导电处理应采用碳金双层镀膜法。在放射虫化石表面先蒸镀一层１０～２０ｎｍ厚的碳膜，然后根据放射虫化石的形态和表面结构的不同，溅射厚度不同的金膜；钟罩形、塔形放射虫化石的金膜厚度在６０～８０ｎｍ，带刺的球形放射虫化石的金膜厚度在８０～１４０ｎｍ，球形放射虫化石的金膜厚度在１４０～２００ｎｍ。
The sample preparation method used to obtain high quality secondary electron images of radiolarian fossils is discussed. Through many tests, that the radioactive fossil surface conductive treatment should be used carbon-gold double coating method. A 10-20 nm thick carbon film is deposited on the surface of the radioactive fossil, and gold films with different thicknesses are sputtered according to the morphology and surface structure of the radiolarian fossils. The bell-shaped and pyramidal gold of the pyramidal tower The thickness of the film is 60-80nm, the thickness of the gold film of the barbed spherical radiolarian fossil is 80-140nm, and the thickness of the spherical radiolarian fossil is 140-200nm.