On the dynamical coupling between the dipolar and tunneling system of CH3-groups in solids at high temperatures |
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| Authors: | JFJM Pourquié S Emid J Smidt RA Wind |
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| Institution: | Department of Applied Physics, Delft University of Technology, Lorentzweg 1, Delft, The Netherlands |
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| Abstract: | For methyl groups a dynamical coupling has been predicted between the dipolar and tunnelling systems, also at high temperatures where the observable tunnelling frequency at thermal equilibrium ωt is zero. This is experimentally confirmed by observed non-exponential dipolar relaxation for ω02τc2 ? 1. |
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