Used GATAN 691 #293767314 for sale

GATAN 691 is an advanced ion milling equipment designed to enable high-resolution cross-sectional imaging of samples for microscopy. The system is suitable for use in a variety of fields, such as transmission electron microscopy (TEM), scanning electron microscopy (SEM), and X-ray microscopy (XRM). It is capable of producing samples of high-contrast for elemental and compositional analysis. 691 consists of a top-of-the-line sputter ion source with a heated ion chamber that enables the ion current during milling to be precisely controlled. The unit also features a highly accurate in-situ measurement of the ion current to ensure that the desired beam current is obtained. Additionally, the ion beam current, angle, and scanning step can be precisely and controllably adjusted via a remote control console. The ion milling mechanism is based on the stripping of surface atoms and molecules from samples with energetic ions. These ions are generated by sputtering a target material with an ion beam. GATAN 691 can be set to wide-field or automated milling mode, with the former being optimized for manual operation and the latter for high-speed, high-precision scanning. In wide-field milling mode, the ion beam is maintained in a fixed position over the sample, while in automated mode, the ion beam is scanned over the sample in two dimensions with a programmed step size. 691 machine also features a floating high vacuum arm which can be utilized for sample presentation and stage movement. The ion beam can be optimized for either sample imaging or milling. Additionally, the ion source response time can be adjusted for optimal ion beam homogeneity and low power consumption. GATAN 691 is an easy-to-use, efficient tool designed to provide high-resolution, repeatable imaging. The combination of a computer-controlled asset, high-performance ion source, and precise beam control capabilities make it a powerful tool for applications requiring TEM, SEM, and XRM.