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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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|
|Additional Information:||The copyright of this article belongs to Elsevier.|
|Department/Centre:||Division of Chemical Sciences > Sophisticated Instruments Facility
Division of Physical & Mathematical Sciences > Physics
|Date Deposited:||30 Jun 2006|
|Last Modified:||19 Sep 2010 04:29|
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