Pulsed Orotron - A new microwave source for submillimeter pulse high-field electron paramagnetic resonance spectroscopy
Abstract
A vacuum-tube device for the generation of pulsed microwave radiation in the submillimeter range (up to 380 GHz) is presented, designed for use as a source in a 360 GHz high-field/high-frequency electron paramagnetic resonance (EPR) spectrometer - the pulsed Orotron. Analogous to the known continuous wave (cw) version, in the pulsed Orotron microwave radiation is generated by the interaction of a nonrelativistic electron beam with a diffraction grating (stimulated Smith-Purcell radiation) in feedback with an open Fabry-Perot resonator construction. The presented design extends the cw Orotron by a gate electrode and a high-voltage pulsing unit to control the electron beam current. The generated pulses at 360 GHz have pulse lengths from 100 ns-10 {mu}s and a pulse power of (22{+-}5) mW. The output in a broader frequency band between 320 and 380 GHz ranges from 20 up to 60 mW. Within a 10 {mu}s time slot, incoherent pulse trains of arbitrary duration can be generated. The pulsed Orotron has been incorporated in the quasioptical microwave bridge of a heterodyne induction mode EPR spectrometer. The first free induction decay measurements at a microwave frequency of 360 GHz and a magnetic field of 12.8 T on a polycrystalline perylenyl-ion sample are presentedmore »
- Authors:
-
- Institute of Chemical Kinetics and Combustion, 630090 Novosibirsk (Russian Federation)
- Publication Date:
- OSTI Identifier:
- 20643968
- Resource Type:
- Journal Article
- Journal Name:
- Review of Scientific Instruments
- Additional Journal Information:
- Journal Volume: 75; Journal Issue: 9; Other Information: DOI: 10.1063/1.1778071; (c) 2004 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0034-6748
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; DIFFRACTION GRATINGS; ELECTRIC POTENTIAL; ELECTRON BEAMS; ELECTRON SPECTROSCOPY; ELECTRON SPIN RESONANCE; EPR SPECTROMETERS; FREE ELECTRON LASERS; GHZ RANGE 100-1000; MAGNETIC FIELDS; MICROWAVE RADIATION; POLYCRYSTALS; PULSES; RESONATORS; SCANNING ELECTRON MICROSCOPY
Citation Formats
Grishin, Yu A, Fuchs, M R, Schnegg, A, Dubinskii, A A, Dumesh, B S, Rusin, F S, Bratman, V L, Moebius, K, Institut fuer Experimentalphysik, Freie Universitaet Berlin, Arnimallee 14, 14195 Berlin,, Institute of Chemical Physics, 119991 Moscow, Institute of Spectroscopy, Russian Academy of Science, 142092 Troitsk, Moscow Region, Institute of Metrology for Time and Space, 141570 Mendeleevo, Moscow Region, Institute of Applied Physics, Russian Academy of Sciences, 603155 Nizhny Novgorod, and Institut fuer Experimentalphysik, Freie Universitaet Berlin, Arnimallee 14, 14195 Berlin. Pulsed Orotron - A new microwave source for submillimeter pulse high-field electron paramagnetic resonance spectroscopy. United States: N. p., 2004.
Web. doi:10.1063/1.1778071.
Grishin, Yu A, Fuchs, M R, Schnegg, A, Dubinskii, A A, Dumesh, B S, Rusin, F S, Bratman, V L, Moebius, K, Institut fuer Experimentalphysik, Freie Universitaet Berlin, Arnimallee 14, 14195 Berlin,, Institute of Chemical Physics, 119991 Moscow, Institute of Spectroscopy, Russian Academy of Science, 142092 Troitsk, Moscow Region, Institute of Metrology for Time and Space, 141570 Mendeleevo, Moscow Region, Institute of Applied Physics, Russian Academy of Sciences, 603155 Nizhny Novgorod, & Institut fuer Experimentalphysik, Freie Universitaet Berlin, Arnimallee 14, 14195 Berlin. Pulsed Orotron - A new microwave source for submillimeter pulse high-field electron paramagnetic resonance spectroscopy. United States. https://doi.org/10.1063/1.1778071
Grishin, Yu A, Fuchs, M R, Schnegg, A, Dubinskii, A A, Dumesh, B S, Rusin, F S, Bratman, V L, Moebius, K, Institut fuer Experimentalphysik, Freie Universitaet Berlin, Arnimallee 14, 14195 Berlin,, Institute of Chemical Physics, 119991 Moscow, Institute of Spectroscopy, Russian Academy of Science, 142092 Troitsk, Moscow Region, Institute of Metrology for Time and Space, 141570 Mendeleevo, Moscow Region, Institute of Applied Physics, Russian Academy of Sciences, 603155 Nizhny Novgorod, and Institut fuer Experimentalphysik, Freie Universitaet Berlin, Arnimallee 14, 14195 Berlin. 2004.
"Pulsed Orotron - A new microwave source for submillimeter pulse high-field electron paramagnetic resonance spectroscopy". United States. https://doi.org/10.1063/1.1778071.
@article{osti_20643968,
title = {Pulsed Orotron - A new microwave source for submillimeter pulse high-field electron paramagnetic resonance spectroscopy},
author = {Grishin, Yu A and Fuchs, M R and Schnegg, A and Dubinskii, A A and Dumesh, B S and Rusin, F S and Bratman, V L and Moebius, K and Institut fuer Experimentalphysik, Freie Universitaet Berlin, Arnimallee 14, 14195 Berlin, and Institute of Chemical Physics, 119991 Moscow and Institute of Spectroscopy, Russian Academy of Science, 142092 Troitsk, Moscow Region and Institute of Metrology for Time and Space, 141570 Mendeleevo, Moscow Region and Institute of Applied Physics, Russian Academy of Sciences, 603155 Nizhny Novgorod and Institut fuer Experimentalphysik, Freie Universitaet Berlin, Arnimallee 14, 14195 Berlin},
abstractNote = {A vacuum-tube device for the generation of pulsed microwave radiation in the submillimeter range (up to 380 GHz) is presented, designed for use as a source in a 360 GHz high-field/high-frequency electron paramagnetic resonance (EPR) spectrometer - the pulsed Orotron. Analogous to the known continuous wave (cw) version, in the pulsed Orotron microwave radiation is generated by the interaction of a nonrelativistic electron beam with a diffraction grating (stimulated Smith-Purcell radiation) in feedback with an open Fabry-Perot resonator construction. The presented design extends the cw Orotron by a gate electrode and a high-voltage pulsing unit to control the electron beam current. The generated pulses at 360 GHz have pulse lengths from 100 ns-10 {mu}s and a pulse power of (22{+-}5) mW. The output in a broader frequency band between 320 and 380 GHz ranges from 20 up to 60 mW. Within a 10 {mu}s time slot, incoherent pulse trains of arbitrary duration can be generated. The pulsed Orotron has been incorporated in the quasioptical microwave bridge of a heterodyne induction mode EPR spectrometer. The first free induction decay measurements at a microwave frequency of 360 GHz and a magnetic field of 12.8 T on a polycrystalline perylenyl-ion sample are presented and future applications and extensions of Orotron-EPR spectroscopy are discussed.},
doi = {10.1063/1.1778071},
url = {https://www.osti.gov/biblio/20643968},
journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 9,
volume = 75,
place = {United States},
year = {Wed Sep 01 00:00:00 EDT 2004},
month = {Wed Sep 01 00:00:00 EDT 2004}
}