12th International Conference on Muon Spin Rotation, Relaxation and Resonance (musr2011)
The underlying magnetic field distribution in many samples studied by the mu R technique is asymmetric. Despite this, quite often fit functions assuming symmetric (Gaussian) distributions are used. Here, a back-to-back exponential function, which can be made asymmetric with fit parameters, is studied numerically alongside a Gaussian function to see how well each fits symmetric and asymmetric simulated data. Both fit symmetric data well, but the back-to-back exponential is found to be superior for fitting asymmetric data.
Humpherys, M. G., Donnelly, C., Greer, A. J., & Kossler, W. J. (2012). Gaussians versus back-to-back exponentials: a numerical study. Physics Procedia, 30, 26-29.