Synchronous accumulation of pola~sation. A new approach to cross polarisation under fast magic angle spinning

Pratima, R and Ramanathan, KV (1994) Synchronous accumulation of pola~sation. A new approach to cross polarisation under fast magic angle spinning. In: Chemical Physics Letters, 221 (3-4). pp. 322-326.

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Abstract

A new experiment to circumvent the problem of poor cross polarisation (CP) efficiency at the Hartmann-Hahn match under high-speed magic angle spinning is proposed and tested in the case of adamantane. It is based on the fact that the election transferred from the I spin to the S spin, though zero for a full rotor cycle, is finite for a part of a cycle. The polarisation acquired during a part of every rotor cycle is accumulated for several cycles to be finally observed as the signal. This is achieved by a simple modification to the regular CP experiment and has been shown to give rise to enhanced efficiency at the standard CP condition.

Item Type:	Journal Article
Publication:	Chemical Physics Letters
Publisher:	Elsevier
Additional Information:	The copyright of this article belongs to Elsevier.
Department/Centre:	Division of Chemical Sciences > Sophisticated Instruments Facility (Continued as NMR Research Centre) Division of Physical & Mathematical Sciences > Physics
Date Deposited:	30 Jun 2006
Last Modified:	19 Sep 2010 04:29
URI:	http://eprints.iisc.ac.in/id/eprint/7772

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