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Abstract #3864

Quantitative Calculation of the Proton Radiation Damping Constant at 1

James Tropp1, Kayvan Keshari2, Mark Van Criekinge

1Global Applied Science Lab, GE Healthcare Technologies, Fremont, CA, United States; 2Radiology, University of California San Francisco, San Francisco, CA, United States

We have calculated the radiation damping constant for protons in neat H2O at 14.1 tesla, and confirmed the accuracy of our prediction by measurement. The calculation contains no adjustable parameters, and replaces the coil filling factor and Q with the coil efficiency, i.e. B1 per absorbed power. The calculated and measured linewidths are, respectively 46.6 Hz and 44.0 Hz.