RBS analysis of trace gas uptake on ice

Uptake and reaction of acidic trace gases (HCl, HBr, SO2,...) on atmospheric aerosols is of key interest to environmental problems such as ozone depletion and global warming. While the importance of these reactions is well established, the physical mechanisms involved are subject to current research and scientific controversy. The present paper demonstrates the use of Rutherford backscattering spectroscopy (RBS) to profile elements such as bromine and sulfur on ice surfaces and the application of RBS to study liquid sulfuric acid. The experimental chamber needed for these measurements is described in this paper. (C) 2002 Elsevier Science B.V. All rights reserved.