Used GATAN 691 #293826173 for sale

GATAN 691 is an ion milling equipment designed for the polishing and thinning of samples that are used for electron microscopy. It is used to create high-quality surface finishes and thin specimens while preserving the integrity of the sample. The system utilizes a glass chamber with a gas/ion beam generator and a sample holder. The sample is placed onto a rotatable holder which is then placed into the chamber. The chamber is sealed and a gas, such as Argon, is introduced. The gas mixture is then ionized. This ionizing process produces a beam of ions. These ionized particles from the beam are then accelerated towards the surface of the sample, and due to their kinetic energy are able to remove material from the surface. 691 is designed with multiple features to allow for precise control over the ion beam. For example, the current delivered to the ion beam can be adjusted to vary the depth, speed, and uniformity of the material removal. Additionally, the angle of the sample can be adjusted to give a wider range of polishing and thinning options. In addition, GATAN 691 comes with a number of accessories to improve its performance, such as a sample focusing mechanism to focus the ion beam, and an ion beam shutter which allows for the light exposure of the sample. The unit also includes a beam sweep facility which allows the specimen to be exposed to the entire ion beam in one sweep. 691 is a powerful machine designed for the precise polishing and thinning of specimens used in electron microscopy. It can be used to create high-quality surface finishes and thin samples while preserving the integrity of the sample. Through its adjustable current delivery, beam sweep, and various accessories, the tool can be configured to achieve a variety of polishing and thinning results.