Title :
Application of high-intensity sub-MMW to the signal enhancement of nuclear magnetic resonance for biological solids
Author :
Fujiwara, Toshihito ; Takahashi, Hiroki ; Matsuki, Yoh ; Ueda, Keisuke ; Idehara, Toshitaka ; Ogawa, Isamu ; Toda, Mitsuru
Author_Institution :
Osaka Univ., Suita, Japan
Abstract :
Instrumentation for high-field dynamic-nuclear polarization (DNP) was developed to enhance the sensitivity of nuclear magnetic resonance of biological solids at high magnetic fields. A newly designed gyrotron generated 394.5-GHz submillimeter wave with 40 W at the second harmonics operation. The DNP at 14.1 T was confirmed by the field dependence of 13C-NMR signal amplitudes of samples at 100 K.
Keywords :
biomedical NMR; biomolecular effects of radiation; gyrotrons; harmonic generation; submillimetre wave propagation; submillimetre waves; 13C NMR; biological solids; frequency 394.5 GHz; gyrotron; high-field dynamic-nuclear polarization; high-intensity submillimeter wave; magnetic flux density 14.1 T; nuclear magnetic resonance; power 40 W; second harmonics operation; signal enhancement; temperature 100 K; Electrons; Gyrotrons; Magnetic fields; Nuclear magnetic resonance; Polarization; Protons; Solids; Submillimeter wave devices; Submillimeter wave technology; Superconducting magnets;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves, 2009. IRMMW-THz 2009. 34th International Conference on
Conference_Location :
Busan
Print_ISBN :
978-1-4244-5416-7
Electronic_ISBN :
978-1-4244-5417-4
DOI :
10.1109/ICIMW.2009.5325521
