scholarly journals Fast electron paramagnetic resonance magic angle spinning simulations using analytical powder averaging techniques

2019 ◽  
Vol 151 (11) ◽  
pp. 114107
Author(s):  
Edward P. Saliba ◽  
Alexander B. Barnes
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Fast Electron ◽  
Magic Angle Spinning ◽  
Magic Angle ◽  
Paramagnetic Resonance ◽  
Angle Spinning ◽  
Electron Paramagnetic ◽  
Averaging Techniques

Magic-Angle Sample Spinning Electron Paramagnetic Resonance—Instrumentation, Performance, and Limitations

2000 ◽  
Vol 147 (2) ◽  
pp. 217-225 ◽  
Author(s):  
Dirk Hessinger ◽  
Christian Bauer ◽  
Michael Hubrich ◽  
Gunnar Jeschke ◽  
Hans-Wolfgang Spiess
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Magic Angle ◽  
Paramagnetic Resonance ◽  
Magic Angle Sample Spinning ◽  
Electron Paramagnetic

High-Field Dynamic Nuclear Polarization

2020 ◽  
Vol 71 (1) ◽  
pp. 143-170 ◽  
Author(s):  
Björn Corzilius
Keyword(s):  
Dynamic Nuclear Polarization ◽  
Nuclear Polarization ◽  
Magic Angle Spinning ◽  
Magic Angle ◽  
Paramagnetic Resonance ◽  
Structural Investigations ◽  
Diverse Field ◽  
History Of ◽  
Field Dynamic ◽  
Angle Spinning

Dynamic nuclear polarization (DNP) is one of the most prominent methods of sensitivity enhancement in nuclear magnetic resonance (NMR). Even though solid-state DNP under magic-angle spinning (MAS) has left the proof-of-concept phase and has become an important tool for structural investigations of biomolecules as well as materials, it is still far from mainstream applicability because of the potentially overwhelming combination of unique instrumentation, complex sample preparation, and a multitude of different mechanisms and methods available. In this review, I introduce the diverse field and history of DNP, combining aspects of NMR and electron paramagnetic resonance. I then explain the general concepts and detailed mechanisms relevant at high magnetic field, including solution-state methods based on Overhauser DNP but with a greater focus on the more established MAS DNP methods. Finally, I review practical considerations and fields of application and discuss future developments.

scholarly journals Challenges and Solutions for Handling and Characterizing Alkali-Tc-Oxide Salts

MRS Advances ◽  
2018 ◽  
Vol 3 (21) ◽  
pp. 1191-1200
Author(s):  
Jamie L. Weaver ◽  
Chuck Soderquist ◽  
Nancy Washton ◽  
Paul Gassman ◽  
Eric Walter ◽  
...  
Keyword(s):  
Method Development ◽  
Advanced Characterization ◽  
Magic Angle Spinning ◽  
Lessons Learned ◽  
Magic Angle ◽  
Paramagnetic Resonance ◽  
Characterization Methods ◽  
X Ray ◽  
Similar Characterization ◽  
Angle Spinning

ABSTRACTThough not often discussed explicitly in literature, sample handling and preparation for advanced characterization techniques is a significant challenge for radiological materials. In this contribution, a detailed description is given of method development associated with characterization of highly radioactive and, in some cases, hygroscopic oxides of technetium. Details are given on developed protocols, fixtures, and tooling designed for x-ray and neutron diffraction, x-ray absorption, Raman spectroscopy, magic angle spinning nuclear magnetic resonance, and electron paramagnetic resonance. In some cases, multiple iterations of improved sample holder design are described. Lessons learned in handling Tc compounds for these and similar characterization methods are discussed.

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