Abstract
A distinctive field dependence of longitudinal muon spin relaxation in acetone liquid and vapour suggests that modulation of the isotropic hyperfine coupling of the (CH3)2COMu radical is the dominant relaxation mechanism. The temperature dependent correlation time extracted from the data then corresponds to the lifetime of the states of internal libration of the molecule. The variation of relaxation rate may also be followed into the solid phase, peaking at the freezing transition.
Similar content being viewed by others
References
S.F.J. Cox, W.G. Williams, G.H. Eaton and F.J. Bermejo, ISIS Annual Report (1991) A304.
E. Roduner inExotic Atoms (K. Crowe, J. Dudes, G. Fiorentini and G. Torelli, eds, Plenum, New York, 1980) 379.
A. Hill, S.F.J. Cox, R. de Renzi, C. Bucci, A. Vecli and M.C.R. Symons,Proc. μSR'83: Hyp. Int.17–19 (1984) 815; see also A. Hill, G. Allen, G. Stirling and M.C.R. Symons, J. Chem. Soc. Faraday Trans.I 78 (1982) 2959 and A. Hillet al, J. Chem. Soc. Faraday Trans.I 81 (1985) 186.
D. Buttar, R.M. Macrae, B.C. Webster and E. Roduner,Proc μSR'90: Hyp. Int.65 (1990) 927.
S.F.J. Cox, D.A. Geeson, C.J. Rhodes, E. Roduner, C.A. Scott and M.C.R. Symons,Proc. μSR'86: Hyp. Int.32 (1986) 763.
R.M. Macrae, Thesis (University of Glasgow, 1990).
D. Buttar, Thesis (University of Glasgow, 1991).
D.G. Fleming, R.F. Kiefl, D.M. Garner, M. Senba, A.C. Gonzalez, J.R. Kempton, D.J. Arseneau, P.W. Percival, J.-C. Brodovitch, S.-K. Leung, D. Yu and S.F.J. Cox,Proc. μSR'90: Hyp. Int.65 (1990) 767.
J.J. Pan, D.G. Fleming, M. Senba, D.J. Arseneau, R. Snooks, S. Baer, M. Hahn, R.F. Kiefl, P.W. Percival, J.-C. Brodovitch and S.F.J. Cox,Spin relaxation of muonated radicals in the gas phase, these proceedings.
T.E. Bull and J. Jonas, J. Chem. Phys.52 (1970) 4553.
J.F. Dill, T.A. Litovitz and J.A. Bucaro, J. Chem. Phys.62 (1975) 3839.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Cox, S.F.J., Macrae, R.M., Williams, W.G. et al. Gas, liquid and solid state studies of muon spin relaxation in organic radicals. Hyperfine Interact 87, 871–876 (1994). https://doi.org/10.1007/BF02068477
Issue Date:
DOI: https://doi.org/10.1007/BF02068477