Comment on “Muon spin relaxation study of spin dynamics in poly(triarylamine)”

Analysis of Avoided Level Crossing Muon Spin Resonance Spectra of Muoniated Radicals in Anisotropic Environments: Estimation of Muon Dipolar Hyperfine Parameters for Lorentzian-like Δ1 Resonances

“…In this situation, it is not possible to determine D ∥ µ as it is a strongly correlated fit parameter with the damping rate. There have been claims to determine D ∥ µ by fitting Lorentzian-like resonances with powder patterns, but this often results in overparamaterized fits and the obtained values not being physically realistic [5]. This is especially true when dealing with the non-linear background in ALC-µSR spectra that arises from positron spiraling in the applied magnetic field.…”