Abstract

Abstract The error is calculated when it arises in a transmission type experiment, where the stopping cross-section is determined only from a selected number of transmitted projectiles. We describe an experiment where this error is smallest: the target is evaporated onto a surface barrier detector, hence we measure almost in a 2πgeometry. By this method the stopping cross-section of gold for hydrogen ions is determined between 35 keV/u and 500 keV/u relative to that at 500 keV/u. The following corrections are applied to the data: (i) due to the nonlinearity of the detector system, (ii) due to multiple scattering, and (iii) due to nuclear energy loss. The results show good agreement to earlier data of our group. The discrepancy to the tabulated values of Andersen and Ziegler is discussed.

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