Conference paper

Publication year: 2002

Pages: 800-802

Journal: Review of Scientific Instruments

Volume number: 73

Issue number: 2

ISSN: 0034-6748

DOI Link: https://doi.org/10.1063/1.1430873

Conference: 9th International Conference on Ion Sources (ICIS)

Publisher: American Institute of Physics

Abstract: 
Studies have been conducted to determine the feasibility of using the collisional cooling technique as a means of reducing energy spreads and emittances of sputter-generated negative-ion beams. A gas-filled rf-quadrupole ion cooler, equipped with provisions for decelerating ion beams to sufficiently low energies prior to cooling and reaccelerating them to high energies following the cooling process, has been designed and used to cool O- and F- ion beams with initial energy spreads, DeltaE> 10 eV to final energy spreads, DeltaEsimilar to2 eV full width half-maximum. Overall transmission efficiencies of similar to14% for F- beams have been obtained. Experimental results show that electron detachment is the major loss mechanism for negative ions. (C) 2002 American Institute of Physics.

Harvard Citation style: Liu, Y., Liang, J., Alton, G., Beene, J., Zhou, Z. and Wollnik, H. (2002) Cooling negative-ion beams, Review of Scientific Instruments, 73(2), pp. 800-802. https://doi.org/10.1063/1.1430873

APA Citation style: Liu, Y., Liang, J., Alton, G., Beene, J., Zhou, Z., & Wollnik, H. (2002). Cooling negative-ion beams. Review of Scientific Instruments. 73(2), 800-802. https://doi.org/10.1063/1.1430873