scholarly journals Augmenting microwave irradiation in MAS DNP NMR samples at 263 GHz

2018 ◽  
Vol 187 ◽  
pp. 01005 ◽  
Author(s):  
Armin Purea ◽  
Benjamin Ell ◽  
Christian Reiter ◽  
Fabien Aussenac ◽  
Frank Engelke
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Spatial Distribution ◽  
Magnetic Resonance ◽  
Field Strength ◽  
Nuclear Polarization ◽  
Microwave Field ◽  
Magic Angle Spinning ◽  
Magic Angle ◽  
Microwave Beam ◽  
Angle Spinning

The magnetic microwave field strength and its detailed spatial distribution in magic-angle spinning (MAS) nuclear magnetic resonance (NMR) probes capable of dynamic nuclear polarization (DNP) is investigated by numerical simulations with the objective to augment the magnetic microwave amplitude by structuring the sample in the mm and sub-mm range and by improving the coupling of the incident microwave beam to the sample. As it will be shown experimentally, both measures lead to an increase of the microwave efficiency in DNP MAS NMR.

scholarly journals Fast and accurate MAS–DNP simulations of large spin ensembles

2017 ◽  
Vol 19 (5) ◽  
pp. 3506-3522 ◽  
Author(s):  
Frédéric Mentink-Vigier ◽  
Shimon Vega ◽  
Gaël De Paëpe
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Magnetic Fields ◽  
Dynamic Nuclear Polarization ◽  
Nuclear Polarization ◽  
Magic Angle Spinning ◽  
Successful Implementation ◽  
Magic Angle ◽  
Angle Spinning ◽  
Large Spin

A deeper understanding of parameters affecting Magic Angle Spinning Dynamic Nuclear Polarization (MAS–DNP), an emerging nuclear magnetic resonance hyperpolarization method, is crucial for the development of new polarizing agents and the successful implementation of the technique at higher magnetic fields (>10 T).

Sign in / Sign up

Export Citation Format

Share Document