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Title: Investigation of gas stripping at 4.1MeV for high mass negative ions
Authors: Hotchkis, MAC
Child, DP
Fink, D
Levchenko, VA
Wallner, A
Keywords: Mass
Administrative procedures
Issue Date: 1-Jan-2013
Publisher: Elsevier Science BV
Citation: Hotchkis, M. A. C., Child, d., Fink, D., Levchenko, V., & Wallner, A. (2013). Investigation of gas stripping at 4.1MeV for high mass negative ions. Nuclear Instruments and Methods in Physics Research Section B-Beam Interactions with Materials and Atoms, 294, 287-391. doi:10.1016/j.nimb.2012.01.019
Abstract: We have used a tandem accelerator to measure charge state distributions at 4.1 MeV for negative ions ranging from carbon to uranium oxide passing through the gases helium, argon and xenon. The gas density was varied over a wide range to observe the onset of equilibrium stripping conditions. Using a 12 degrees electrostatic deflector after the accelerator, charge states from 1+ to 8+ have been measured. For carbon, the charge state is seen to strip progressively from a low charge of around 1+ towards equilibrium with increasing gas thickness. However, for all the other ions, there is a high probability of multiple electron loss in single collisions with the gas, leading to mean charge states greater than 2 even at very low gas stripper pressure. This effect is observed to be gas-independent. © 2013, Elsevier Ltd.
Gov't Doc #: 5309
URI: http:/
ISSN: 0168-583X
Appears in Collections:Journal Articles

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