High-power microwave double-resonance experiments

1969 ◽  
Vol 47 (21) ◽  
pp. 2343-2350 ◽  
Author(s):  
Takeshi Oka
Keyword(s):  
Fine Structure ◽  
Ethylene Oxide ◽  
High Power ◽  
Power Level ◽  
Double Resonance ◽  
Pumping Power ◽  
High Power Microwave ◽  
High Power Level ◽  
First Time ◽  
Power Microwave

Several microwave double-resonance experiments using high pumping power have been carried out in ethylene oxide molecules. The characteristics of the double resonance, such as the splitting or the "pulling" of the signal, have been observed magnified by the use of high power. The M fine structure of the signal has been observed for the first time. By the use of collision-induced transitions, the formula of Karplus and Schwinger for saturation has been confirmed at the high-power level. Applications of the technique for additional studies of molecular problems are discussed.

scholarly journals Fine structure of high-power microwave-induced resistance oscillations

2017 ◽  
Vol 95 (4) ◽  
Author(s):  
Q. Shi ◽  
M. A. Zudov ◽  
I. A. Dmitriev ◽  
K. W. Baldwin ◽  
L. N. Pfeiffer ◽  
...  
Keyword(s):  
Fine Structure ◽  
Induced Resistance ◽  
High Power ◽  
High Power Microwave ◽  
Power Microwave

scholarly journals Design of a dual-band power combining architecture for high-power microwave applications

2010 ◽  
Vol 28 (3) ◽  
pp. 377-385 ◽  
Author(s):  
Qiang Zhang ◽  
Chengwei Yuan ◽  
Lie Liu
Keyword(s):  
High Power ◽  
Peak Power ◽  
Power Level ◽  
Dual Band ◽  
Power Combining ◽  
High Power Microwave ◽  
Feed Line ◽  
Output Peak Power ◽  
Power Microwave ◽  
Horn Feed

AbstractThe remaining challenges, confronting the limited output peak power level of high-power microwave (HPM) sources, stimulate the development of power combining system. This paper reports the design methods and numerical results for a kind of dual-band incoherent power combining architecture applied in HPM. It is particularly effective to radiate dual-band microwave simultaneously, generated by a coaxial dual-band HPM source or two separate HPM sources of different bands. Two types of mode conversion structures, i.e., a dual-band feed line with co-aligned ports and a dual-band feed line with off-aligned ports, are proposed, where coaxial output port itself is adopted to connect the coaxial dual-band horn feed. These two types of feed lines provide a high conversion efficiency of about 98% from TEM or TM01mode to TE11mode and a bandwidth of about 10% at each band. The horn feed, with a high power handling capacity, is compact, and a good far-field radiation pattern at each band has been achieved by combining horizontal and vertical corrugations. Thus, the dual-band radiation system has not only realized incoherent power combination, with higher output peak power level, but also is suitable for feeding of, e.g., offset shaped single-reflector antennas in dual-band HPM systems in the future.

High Power Microwave Generation by Double-Anode Virtual Cathode Oscillator

2019 ◽  
Vol 139 (10) ◽  
pp. 421-427
Author(s):  
Kazuki Nagao ◽  
Wataru Takatsu ◽  
Pham Van Thuan ◽  
Taichi Sugai ◽  
Weihua Jiang
Keyword(s):  
High Power ◽  
Virtual Cathode ◽  
High Power Microwave ◽  
Microwave Generation ◽  
Power Microwave
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