Energy-loss straggling of 2–10 MeV/u Kr ions in gases
Vockenhuber, C., Jensen, J., Julin, J., Kettunen, H., Laitinen, M., Rossi, M., . . . Whitlow, H. (2013). Energy-loss straggling of 2–10 MeV/u Kr ions in gases. European Physical Journal D, 67 (7), 145. doi:10.1140/epjd/e2013-40095-4
Published inEuropean Physical Journal D
© EDP Sciences, Societa Italiana di Fisica, Springer-Verlag 2013. This is a final draft version of an article whose final and definitive form has been published by Springer. Published in this repository with the kind permission of the publisher.
Measurements have been performed on a time-of-flight setup at the Jyv¨askyl¨a K130 cyclotron, aiming at energy-loss straggling of heavy ions in gases. Theoretical predictions based on recently developed theory as well as an empirical interpolation formula predict that straggling can be more than ten times higher than Bohr straggling in the MeV/u regime. Our measurements with up to 9.3 MeV/u Kr ions on He, N2, Ne and Kr targets confirm this feature. Our calculations show the relative contributions of linear straggling, bunching including packing, and charge exchange. Our results for stopping cross sections are compatible with values from the literature.