Zobrazeno 1 - 10
of 85
pro vyhledávání: '"V.B. Neculaes"'
Autor:
J. Manke, Raul Fernando Subia, Selaka Bandara Bulumulla, Vitali Victor Lissianski, Surinder Singh, V.B. Neculaes, G. Rizeq
Publikováno v:
Fuel. 140:495-501
This work presents initial results for small scale microwave assisted, low temperature and low pressure conversion of coal to heavy hydrocarbons (pyrolysis oils) in the presence of methane. These heavy hydrocarbons can subsequently be upgraded to liq
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::62a313277a747268bf829814ed1b0fc7
https://doi.org/10.1016/j.fuel.2014.09.108
https://doi.org/10.1016/j.fuel.2014.09.108
Autor:
Y. Hidaka, Ronald M. Gilgenbach, V.B. Neculaes, Nicholas M. Jordan, H.L. Bosman, W.M. White, P. Pengvanich, John Luginsland, Yue Ying Lau, Brad W. Hoff, M.C. Jones
Publikováno v:
IEEE Transactions on Electron Devices. 52:864-871
Previous experiments demonstrated that imposing an azimuthally varying axial magnetic field, axially asymmetric, in dc-operating oven magnetrons causes rapid mode growth (by magnetic priming) and significant noise reduction. This configuration was pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7f10052c0258c0d27b85356cee1feee
https://doi.org/10.1109/ted.2005.845857
https://doi.org/10.1109/ted.2005.845857
Autor:
V.B. Neculaes, M.C. Jones, W.M. White, Nicholas M. Jordan, H.L. Bosman, P. Pengvanich, John Luginsland, Y. Hidaka, Ronald M. Gilgenbach, Yue Ying Lau
Publikováno v:
IEEE Transactions on Electron Devices. 52:858-863
Two-dimensional simulations have been performed on a six-vane relativistic magnetron with uniform axial magnetic fields versus azimuthally varying axial magnetic fields, defined as magnetic priming. Electron phase-space plots show rapid growth of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7293657dbae411dab60a01f104a4120e
https://doi.org/10.1109/ted.2005.845856
https://doi.org/10.1109/ted.2005.845856
Autor:
Y. Hidaka, P. Pengvanich, Yue Ying Lau, H.L. Bosman, John Luginsland, Ronald M. Gilgenbach, W.M. White, V.B. Neculaes, M.C. Jones
Publikováno v:
IEEE Transactions on Plasma Science. 33:654-660
Single particle orbit considerations show that the cycloidal orbits of electrons in a gap with crossed electric and magnetic fields lead to rapid spoke formation if the external magnetic field has a periodic variation. This spoke formation is primari
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00004629a04f9034e80dda037a60c898
https://doi.org/10.1109/tps.2005.844525
https://doi.org/10.1109/tps.2005.844525
Autor:
Y. Hidaka, Yue Ying Lau, H.L. Bosman, V.B. Neculaes, P. Pengvanich, Nicholas M. Jordan, Ronald M. Gilgenbach, Brad W. Hoff, W.M. White, John W. Luginsland, M.C. Jones
Publikováno v:
IEEE Transactions on Plasma Science. 33:94-102
Azimuthally varying axial magnetic fields have been utilized to perform "magnetic priming" of magnetrons for rapid startup, low noise, and mode control. An overview of the latest magnetic priming experimental and simulation results are presented in t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3ecb8ae2e7d17981050a43bc4f0b10e4
https://doi.org/10.1109/tps.2004.841169
https://doi.org/10.1109/tps.2004.841169
Autor:
M. C. Jones, M.R. Lopez, V.B. Neculaes, Yue Ying Lau, Ronald M. Gilgenbach, T.A. Spencer, David Price, W.M. White
Publikováno v:
Review of Scientific Instruments. 75:2976-2980
Initial results are presented of an innovative cathode operating in a relativistic magnetron powered by an accelerator with parameters: −0.3 MV, 1–10 kA, and 0.5 μs pulse length. This cathode is fabricated by ablating a pattern on the cathode us
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::410aa5817f7a7bb4301dec539c6db293
https://doi.org/10.1063/1.1784561
https://doi.org/10.1063/1.1784561
Autor:
K.L. Cartwright, Trevor Strickler, M.D. Haworth, David Price, John Luginsland, David W. Jordan, Peter Mardahl, M. R. Lopez, V.B. Neculaes, Yue Ying Lau, W.M. White, M. C. Jones, Mark D. Johnston, Ronald M. Gilgenbach, T.A. Spencer
Publikováno v:
IEEE Transactions on Plasma Science. 32:1171-1180
Relativistic magnetron experiments performed on a six-cavity device have generated over 300 MW total microwave power near 1 GHz. These experiments were driven by the long-pulse electron beam from an accelerator with parameters as follows: voltage of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9df6a25d9cce2bdc1ac9682ba882f70b
https://doi.org/10.1109/tps.2004.828898
https://doi.org/10.1109/tps.2004.828898
Publikováno v:
IEEE Transactions on Plasma Science. 32:1152-1159
A technique has been proven to significantly reduce the noise and to hasten the startup in microwave signals from dc operating oven magnetrons. The technique is based on imposition of an azimuthally varying axial magnetic field in magnetrons. For an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8858405412243870f74620caabca8d0e
https://doi.org/10.1109/tps.2004.828806
https://doi.org/10.1109/tps.2004.828806
Publikováno v:
Applied Physics Letters. 85:6332-6334
A cathode priming technique of a relativistic magnetron is analyzed via a three-dimensional particle-in-cell simulation. By imposing a threefold azimuthal variation on the emitting cathode of a six-cavity relativistic magnetron, the electrons are pre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::afff511593d059d8c2a697b95efd0946
https://doi.org/10.1063/1.1841454
https://doi.org/10.1063/1.1841454
Autor:
Ronald M. Gilgenbach, J. J. Watrous, Y.Y. Lau, Michael H. Frese, John Luginsland, M. C. Jones, V.B. Neculaes
Publikováno v:
Applied Physics Letters. 84:5425-5427
A three-dimensional parallel particle-in-cell code, ICEPIC, is used to simulate the geometry and the magnetic field profiles of the recent low-noise, fast startup magnetron experiments at the University of Michigan. The fast startup, the power levels
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f549f3135a3b914183b4529badd1bef6
https://doi.org/10.1063/1.1765732
https://doi.org/10.1063/1.1765732