Iterative lineshape analysis of quadrupolar echo spectra of a damped CD3 
quantum rotor: Preliminary evidence of a novel mechanism of stochastic spin 
exchange

Szymanski, Slawomir; Olejniczak, Zbigniew; Detken, Andreas; Haeberlen, Ulrich

doi:10.1006/jmre.2000.2252

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学術論文

Iterative lineshape analysis of quadrupolar echo spectra of a damped CD₃ quantum rotor: Preliminary evidence of a novel mechanism of stochastic spin exchange

MPS-Authors

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Detken, Andreas
Emeritus Group Bioorganic Chemistry, Max Planck Institute for Medical Research, Max Planck Society;

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Haeberlen, Ulrich
Research Group Prof. Dr. Haeberlen, Max Planck Institute for Medical Research, Max Planck Society;

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http://www.sciencedirect.com/science/article/pii/S1090780700922523/pdf?md5=e3bee64e96b8f205bf7d1dedc9471d09&pid=1-s2.0-S1090780700922523-main.pdf
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http://dx.doi.org/10.1006/jmre.2000.2252
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引用

Szymanski, S., Olejniczak, Z., Detken, A., & Haeberlen, U. (2001). Iterative lineshape analysis of quadrupolar echo spectra of a damped CD₃ quantum rotor: Preliminary evidence of a novel mechanism of stochastic spin exchange. Journal of Magnetic Resonance, 148(2), 277-288. doi:10.1006/jmre.2000.2252.

引用: https://hdl.handle.net/11858/00-001M-0000-0029-2542-3

要旨

It is demonstrated that the wealth of information about damped quantum rotation of CD(3) groups, contained in quadrupolar echo spectra, can be fully explored in a broad temperature range using a method of iterative analysis of the spectral lineshapes. The recently reported lineshape equation which, apart from the quantum tunneling and the dissipative Alexander--Binsch terms, contains an additional dissipative term having no classical analog is shown to be capable of describing even subtle details of the spectra of a crystal of acetylsalicylic acid--CD(3) oriented specifically in the magnetic field. Preliminary evidence of the occurrence of this novel dissipative mechanism in the system studied is reported. The results obtained seem to suggest that there is no "classical limit" in the dissipative behavior of this system.