Negative ions from gases in a cesium sputter source at BARC-TIFR pelletron accelerator ion source test bench

Cesium ion sputtering offers an efficient and convenient technique of producing a wide variety of atomic and molecular negative ions directly from solid surfaces. It is now well established, that gases can be sprayed in high intensity cesium sputter source not only to widen the number of negative ions species but, in certain cases, the yield of negative ion beams previously available from intrinsic solid surfaces