A Caltech Library Service

Communication: Partial polarization transfer for single-scan spectroscopy and imaging

Norton, Valerie A. and Weitekamp, Daniel P. (2011) Communication: Partial polarization transfer for single-scan spectroscopy and imaging. Journal of Chemical Physics, 135 (14). Art. No. 141107. ISSN 0021-9606.

PDF - Published Version
See Usage Policy.


Use this Persistent URL to link to this item:


A method is presented to partially transfer nuclear spin polarization from one isotope S to another isotope I by the way of heteronuclear spin couplings, while minimizing the loss of spin order to other degrees of freedom. The desired I spin polarization to be detected is a design parameter, while the sequence of pulses at the two Larmor frequencies is optimized to store the greatest unused S spin longitudinal polarization for subsequent use. The unitary evolution for the case of I_NS spin systems illustrates the potentially ideal efficiency of this strategy, which is of particular interest when the spin-lattice relaxation time of S greatly exceeds that of I. Explicit timing and pulses are tabulated for the cases for which M ≤ 10 partial transfers each result in equal final polarization of 1/M or more compared to the final I polarization expected in a single transfer for N = 1, 2, or 3 I spins. Advantages for the ratiometric study of reacting molecules and hyperpolarized initial conditions are outlined.

Item Type:Article
Related URLs:
Additional Information:© 2011 American Institute of Physics. Received 11 August 2011; accepted 28 September 2011; published online 13 October 2011.
Subject Keywords:electron spin polarisation, nuclear magnetic resonance, nuclear spin-lattice relaxation
Issue or Number:14
Classification Code:PACS: 33.25.+k
Record Number:CaltechAUTHORS:20111108-072024737
Persistent URL:
Official Citation:Communication: Partial polarization transfer for single-scan spectroscopy and imaging Valerie A. Norton and Daniel P. Weitekamp J. Chem. Phys. 135, 141107 (2011); doi:10.1063/1.3652965
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:27661
Deposited By: Ruth Sustaita
Deposited On:08 Nov 2011 15:41
Last Modified:03 Oct 2019 03:25

Repository Staff Only: item control page