A New Pulse Sequence for Robust Filtering
of Hyperpolarized Multiplet Spin Order¹

A. N. Pravdivtsev^{a, b}, K. L. Ivanov^{a, b}, A. V. Yurkovskaya^{a, b},
H.-M. Vieth^c, and Academician R. Z. Sagdeev^a

Received May 18, 2015

Abstract—A new Nuclear Magnetic Resonance (NMR) pulse sequence is proposed for manipulating Para-
Hydrogen Induced Polarization (PHIP) at high magnetic fields. The technique enables conversion of the mul-
tiplet spin order into net polarization, which is much easier to exploit in many practical applications of PHIP.
The pulse sequence is easy to implement; moreover, it filters out all residual signals from thermally polarized
spins. Such “background free” detection is promising for sensitivity enhancement in NMR spectroscopy and
improved contrast in NMR imaging.

DOI: 10.1134/S0012501615110044

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