Work

Optimization of THz wave coupling into samples in DNP/NMR spectroscopy

Year: 2010

Type: conference-paper

Abstract: High power millimeter wave and terahertz sources are used in DNP/NMR spectroscopy to greatly enhance the NMR signal. A key issue is the efficient coupling of the source power to the sample. We present HFSS calculations showing that the MIT 250 GHz DNP/NMR system provides a B1value of 13 μT/W1/2. The simulation shows the importance of the diffraction of radiation passing through the RF coil, leading to non-uniform illumination of the sample. A simple single pass model yields insight into the origin of the observed B1value. Methods of optimizing the B1value are described.

Source: International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)

DOI: 10.1109/icimw.2010.5612956

Authors: Emilio A. Nanni, Alexander B. Barnes, Yoh Matsuki, Paul P. Woskov, Bjorn Corzilius, Robert G. Griffin, Richard J. Temkin

Institution: Massachusetts Institute of Technology

Language: English

Topic: Advanced NMR Techniques and Applications

Subfield: Spectroscopy

Field: Chemistry

Domain: Physical Sciences

Open Access status: green

Funders: National Institutes of Health, National Institute of Biomedical Imaging and Bioengineering

OpenAlex ID: W2080831706

FWCI: 2.305

Cites: 8

Cited by: 2

Related to: 10