Frequency-swept dynamic nuclear polarization

M Mardini, RS Palani, IM Ahmad, S Mandal… - Journal of Magnetic …, 2023 - Elsevier
Dynamic nuclear polarization (DNP) improves the sensitivity of NMR spectroscopy by the
transfer of electron polarization to nuclei via irradiation of electron-nuclear transitions with …

Frequency-chirped dynamic nuclear polarization with magic angle spinning using a frequency-agile gyrotron

C Gao, N Alaniva, EP Saliba, EL Sesti, PT Judge… - Journal of Magnetic …, 2019 - Elsevier
We demonstrate that frequency-chirped dynamic nuclear polarization (DNP) with magic
angle spinning (MAS) improves the enhancement of nuclear magnetic resonance (NMR) …

Instrumentation for solid-state dynamic nuclear polarization with magic angle spinning NMR

M Rosay, M Blank, F Engelke - Journal of Magnetic Resonance, 2016 - Elsevier
Advances in dynamic nuclear polarization (DNP) instrumentation and methodology have
been key factors in the recent growth of solid-state DNP NMR applications. We review the …

A quasi-optical and corrugated waveguide microwave transmission system for simultaneous dynamic nuclear polarization NMR on two separate 14.1 T spectrometers

T Dubroca, AN Smith, KJ Pike, S Froud, R Wylde… - Journal of Magnetic …, 2018 - Elsevier
Nuclear magnetic resonance (NMR) is an intrinsically insensitive technique, with Boltzmann
distributions of nuclear spin states on the order of parts per million in conventional magnetic …

Perspectives on microwave coupling into cylindrical and spherical rotors with dielectric lenses for magic angle spinning dynamic nuclear polarization

PH Chen, C Gao, AB Barnes - Journal of Magnetic Resonance, 2019 - Elsevier
Continuous wave dynamic nuclear polarization (DNP) increases the sensitivity of NMR, yet
intense microwave fields are required to transition magic angle spinning (MAS) DNP to the …

Millimeter-wave sources for DNP-NMR

M Blank, K Felch, V Michaelis, R Griffin… - Handbook of High …, 2020 - books.google.com
The past several decades have seen a renewed and growing interest in solid-state dynamic
nuclear polarization (DNP) enhanced nuclear magnetic resonance (NMR) spectroscopy for …

Dynamic nuclear polarization at 9T using a novel 250 gyrotron microwave source

RG Griffin - Journal of Magnetic Resonance, 2011 - Elsevier
In the 1990's we initiated development of high frequency gyrotron microwave sources with
the goal of performing dynamic nuclear polarization at magnetic fields (∼ 5–23T) used in …

High frequency dynamic nuclear polarization

QZ Ni, E Daviso, TV Can, E Markhasin… - Accounts of chemical …, 2013 - ACS Publications
During the three decades 1980–2010, magic angle spinning (MAS) NMR developed into the
method of choice to examine many chemical, physical, and biological problems. In …

Frequency swept microwaves for hyperfine decoupling and time domain dynamic nuclear polarization

DEM Hoff, BJ Albert, EP Saliba, FJ Scott… - Solid state nuclear …, 2015 - Elsevier
Hyperfine decoupling and pulsed dynamic nuclear polarization (DNP) are promising
techniques to improve high field DNP NMR. We explore experimental and theoretical …

High frequency dynamic nuclear polarization: New directions for the 21st century

RG Griffin, TM Swager, RJ Temkin - Journal of magnetic resonance, 2019 - Elsevier
Dynamic nuclear polarization (DNP) is a technique that permits the sensitivity of nuclear
magnetic resonance (NMR) experiments to be enhanced by a factor of (γ e/γ n) where the γ's …