Simple high-resolution Bradbury-Nielsen mass gate

The selection of targets with specific masses, including molecules, atoms, and clusters, has broad applications in spectrometry. As an ion mass-gate with a very high resolution, Bradbury-Nielsen Gates (BNGs) are widely used in the study of size-dependent effects of clusters. Here, wepresent a simple and low-cost method for fabricating high resolution BNGs using a printed circuit board and a 3D printed wire winding and transfer tool. It can produce a pitch of 400 mu m with 25 mu m diameter tungsten wires. The test results indicate that its resolution reaches more than 1500 when it couples with a homemade ultrafast voltage switch. (c) 2024 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).