Transmission Line for 258 GHz Gyrotron DNP Spectrometry

被引：11

作者：

Bogdashov, Alexandr A. ^{[1
]}

Belousov, Vladimir I. ^{[1
]}

Chirkov, Alexey V. ^{[1
]}

Denisov, Gregory G. ^{[1
]}

Korchagin, Vyacheslav V. ^{[1
]}

Kornishin, Sergey Yu ^{[1
]}

Tai, Evgeny M. ^{[2
]}

机构：

[1] Inst Appl Phys, Nizhnii Novgorod, Russia

[2] GYCOM Ltd, Nizhnii Novgorod, Russia

来源：

JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES | 2011年 / 32卷 / 06期

关键词：

Microwave transmission line; HE11; mode; Dynamic nuclear polarization spectrometer; Sub-millimetre wavelength gyrotron; DYNAMIC NUCLEAR-POLARIZATION; MODE; NMR;

D O I：

10.1007/s10762-011-9787-4

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We describe the design and test results of the transmission line for liquid-state (LS) and solid-state (SS) DNP spectrometers with the second-harmonic 258.6 GHz gyrotron at the Institute of the Biophysical Chemistry Center of Goethe University (Frankfurt). The 13-meter line includes a mode converter, HE11 waveguides, 4 mitre bends, a variable polarizer-attenuator, directional couplers, a water-flow calorimeter and a mechanical switch. A microwave power of about 15 W was obtained in the pure HE11 mode at the spectrometer inputs.

引用

收藏

页码：823 / 837

页数：15

相关论文

共 15 条

[1] 250 GHz CW gyrotron oscillator for dynamic nuclear polarization in biological solid state NMR [J].

Bajaj, Vikram S. ;

Hornstein, Melissa K. ;

Kreischer, Kenneth E. ;

Sirigiri, Jagadishwar R. ;

Woskov, Paul P. ;

Mak-Jurkauskas, Melody L. ;

Herzfeld, Judith ;

Temkin, Richard J. ;

Griffin, Robert G. .

JOURNAL OF MAGNETIC RESONANCE, 2007, 189 (02) :251-279

[2] DYNAMIC NUCLEAR-POLARIZATION WITH A CYCLOTRON-RESONANCE MASER AT 5-T [J].

BECERRA, LR ;

GERFEN, GJ ;

TEMKIN, RJ ;

SINGEL, DJ ;

GRIFFIN, RG .

PHYSICAL REVIEW LETTERS, 1993, 71 (21) :3561-3564

[3] MIRROR SYNTHESIS FOR GYROTRON QUASI-OPTICAL MODE CONVERTERS [J].

BOGDASHOV, AA ;

CHIRKOV, AV ;

DENISOV, GG ;

VINOGRADOV, DV ;

KUFTIN, AN ;

MALYGIN, VI ;

ZAPEVALOV, VE .

INTERNATIONAL JOURNAL OF INFRARED AND MILLIMETER WAVES, 1995, 16 (04) :735-744

[4] Mode converter synthesis by the particle swarm optimization [J].

Bogdashov, Alexandr A. ;

Rodin, Yury V. .

INTERNATIONAL JOURNAL OF INFRARED AND MILLIMETER WAVES, 2007, 28 (08) :627-638

[5] 3D WAVEBEAM FIELD RECONSTRUCTION FROM INTENSITY MEASUREMENTS IN A FEW CROSS-SECTIONS [J].

CHIRKOV, AV ;

DENISOV, GG ;

ALEKSANDROV, NL .

OPTICS COMMUNICATIONS, 1995, 115 (5-6) :449-452

[6] Method for Synthesis of Waveguide Mode Converters [J].

G. G. Denisov ;

G. I. Kalynova ;

D. I. Sobolev .

Radiophysics and Quantum Electronics, 2004, 47 (8) :615-620

[7] Liquid state DNP using a 260 GHz high power gyrotron [J].

Denysenkov, Vasyl ;

Prandolini, Mark J. ;

Gafurov, Marat ;

Sezer, Deniz ;

Endeward, Burkhard ;

Prisner, Thomas F. .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2010, 12 (22) :5786-5790

[8]

Doane J.L., 1985, Infrared and Millimeter Waves, V13, P123, DOI [10.1007/s10762-021-00791-w, DOI 10.1007/S10762-021-00791-W]

[9] Polarization-enhanced NMR spectroscopy of biomolecules in frozen solution [J].

Hall, DA ;

Maus, DC ;

Gerfen, GJ ;

Inati, SJ ;

Becerra, LR ;

Dahlquist, FW ;

Griffin, RG .

SCIENCE, 1997, 276 (5314) :930-932

[10]

KATSENELENBAUM BZ, 1967, RADIO ENG ELEC PHYS, V2, P244