caa a22 4500 445305223 CHVBK 20180317142610.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s10762-011-9787-4 doi (NATIONALLICENCE)springer-10.1007/s10762-011-9787-4 Transmission Line for 258GHz Gyrotron DNP Spectrometry [Elektronische Daten] [Alexandr Bogdashov, Vladimir Belousov, Alexey Chirkov, Gregory Denisov, Vyacheslav Korchagin, Sergey Kornishin, Evgeny Tai] 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 258.6GHz 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 15W was obtained in the pure HE11 mode at the spectrometer inputs. Springer Science+Business Media, LLC, 2011 Microwave transmission line nationallicence HE11 mode nationallicence Dynamic nuclear polarization spectrometer nationallicence Sub-millimetre wavelength gyrotron nationallicence Bogdashov Alexandr Institute of Applied Physics, Nizhny Novgorod, Russia aut Belousov Vladimir Institute of Applied Physics, Nizhny Novgorod, Russia aut Chirkov Alexey Institute of Applied Physics, Nizhny Novgorod, Russia aut Denisov Gregory Institute of Applied Physics, Nizhny Novgorod, Russia aut Korchagin Vyacheslav Institute of Applied Physics, Nizhny Novgorod, Russia aut Kornishin Sergey Institute of Applied Physics, Nizhny Novgorod, Russia aut Tai Evgeny GYCOM Ltd, Nyzhny Novgorod, Russia aut Journal of Infrared, Millimeter, and Terahertz Waves Springer US; http://www.springer-ny.com 32/6(2011-06-01), 823-837 1866-6892 32:6<823 2011 32 10762 https://doi.org/10.1007/s10762-011-9787-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10762-011-9787-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bogdashov Alexandr Institute of Applied Physics, Nizhny Novgorod, Russia aut NATIONALLICENCE 700 1- Belousov Vladimir Institute of Applied Physics, Nizhny Novgorod, Russia aut NATIONALLICENCE 700 1- Chirkov Alexey Institute of Applied Physics, Nizhny Novgorod, Russia aut NATIONALLICENCE 700 1- Denisov Gregory Institute of Applied Physics, Nizhny Novgorod, Russia aut NATIONALLICENCE 700 1- Korchagin Vyacheslav Institute of Applied Physics, Nizhny Novgorod, Russia aut NATIONALLICENCE 700 1- Kornishin Sergey Institute of Applied Physics, Nizhny Novgorod, Russia aut NATIONALLICENCE 700 1- Tai Evgeny GYCOM Ltd, Nyzhny Novgorod, Russia aut NATIONALLICENCE 773 0- Journal of Infrared, Millimeter, and Terahertz Waves Springer US; http://www.springer-ny.com 32/6(2011-06-01), 823-837 1866-6892 32:6<823 2011 32 10762 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer