title: Effects of experimental imperfections on a spin counting experiment.
abstract: Spin counting NMR is an experimental technique that allows a determination of the size and time evolution of networks of dipolar coupled nuclear spins. This work reports on an average Hamiltonian treatment of two spin counting sequences and compares the efficiency of the two cycles in the presence of flip errors, RF inhomogeneity, phase transients, phase errors, and offset interactions commonly present in NMR experiments. Simulations on small quantum systems performed using the two cycles reveal the effects of pulse imperfections on the resulting multiple quantum spectra, in qualitative agreement with the average Hamiltonian calculations. Experimental results on adamantane are presented, demonstrating differences in the two sequences in the presence of pulse errors.
authors: Brooklyn College of The City University of New York, Department of Physics, Brooklyn, NY 11210, United States.
authors: Yelena
authors: Y
authors: Zelenova
authors: Steven W
authors: SW
authors: Morgan
authors: Gregory S
authors: GS
authors: Boutis
references: J Magn Reson. 2002 Jul;157(1):106-13
references: 12202138
references: Solid State Nucl Magn Reson. 2005 Jul;28(1):44-9
references: 15885989
references: J Am Chem Soc. 1986 Nov 1;108(24):7447-54
references: 22283239
references: J Magn Reson. 2003 Apr;161(2):132-7
references: 12713962
references: Phys Rev B Condens Matter Mater Phys. 2012 Dec 14;8672(21):
references: 23710125
references: Phys Rev Lett. 2004 Aug 27;93(9):090501
references: 15447087