Study of proton spin echoes in the nematic liquid crystalline phase |
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| Authors: | Ronald Y Dong M Wiszniewska E Tomchuk E Bock |
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| Institution: | Department of Physics, The University of Winnipeg, Winnipeg, Manitoba, Canada;Parker Chemistry Laboratory, The University of Manitoba, Winnipeg, Manitoba, Canada |
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| Abstract: | We studied spin echoes formed in the nematic crystalline phase using 90°- τ-β pulse sequence, where τ is the time between pulses and β the rotation produced by the second pulse. The decay of the echoes as a function of 2τ is nearly exponentail with a time constant TE. Both TE and the echo amplitude at a fixed τ were studied as a function of β in two nematics. |
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