scholarly journals Design and simulation of a ∼390 GHz seventh harmonic gyrotron using a large orbit electron beam

2010 ◽  
Vol 43 (15) ◽  
pp. 155204 ◽  
Author(s):  
Fengping Li ◽  
Wenlong He ◽  
Adrian W Cross ◽  
Craig R Donaldson ◽  
Liang Zhang ◽  
...  
Keyword(s):  
Electron Beam ◽  
Harmonic Gyrotron

scholarly journals A High Harmonic Gyrotron With an Axis-Encircling Electron Beam and a Permanent Magnet

2004 ◽  
Vol 32 (3) ◽  
pp. 903-909 ◽  
Author(s):  
T. Idehara ◽  
I. Ogawa ◽  
S. Mitsudo ◽  
Y. Iwata ◽  
S. Watanabe ◽  
...  
Keyword(s):  
Electron Beam ◽  
Permanent Magnet ◽  
High Harmonic ◽  
Harmonic Gyrotron

Conformal Cross-Flow Axis-Encircling Electron Beam for Driving THz Harmonic Gyrotron

2015 ◽  
Vol 36 (9) ◽  
pp. 960-962 ◽  
Author(s):  
Chao-Hai Du ◽  
Xiang-Bo Qi ◽  
Bao-Liang Hao ◽  
Tsun-Hsu Chang ◽  
Pu-Kun Liu
Keyword(s):  
Electron Beam ◽  
Cross Flow ◽  
Flow Axis ◽  
Harmonic Gyrotron

scholarly journals Development of a high harmonic gyrotron with an axis-encircling electron beam and a permanent magnet

Vacuum ◽  
2005 ◽  
Vol 77 (4) ◽  
pp. 539-546 ◽  
Author(s):  
T. Idehara ◽  
I. Ogawa ◽  
S. Mitsudo ◽  
Y. Iwata ◽  
S. Watanabe ◽  
...  
Keyword(s):  
Electron Beam ◽  
Permanent Magnet ◽  
High Harmonic ◽  
Harmonic Gyrotron

Investigation of the Influence of Electron Beam Quality on the Operation in 0.42-THz Second Harmonic Gyrotron

2016 ◽  
Vol 44 (5) ◽  
pp. 749-754 ◽  
Author(s):  
Qixiang Zhao ◽  
Sheng Yu ◽  
Yanyan Zhang ◽  
Tianzhong Zhang ◽  
Youwei Yang ◽  
...  
Keyword(s):  
Electron Beam ◽  
Second Harmonic ◽  
Beam Quality ◽  
Harmonic Gyrotron

Study of the Effect of the Electron Beam Parameters on a 0.4 THz Second Harmonic Gyrotron

2014 ◽  
Vol 61 (9) ◽  
pp. 3324-3328 ◽  
Author(s):  
Niu Xinjian ◽  
Lei Chaojun ◽  
Liu Yinghui ◽  
Li Hongfu
Keyword(s):  
Electron Beam ◽  
Second Harmonic ◽  
Beam Parameters ◽  
Harmonic Gyrotron

Techniques for Transmission Electron Microscopy of Fiber-Matrix Interfaces in Aluminum Alloy-Boron Composites by Ion Erosio

1971 ◽  
Vol 29 ◽  
pp. 204-205
Author(s):  
G. G. Shaw
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Aluminum Alloy ◽  
Electron Beam ◽  
Pure Aluminum ◽  
Ion Milling ◽  
Transmission Electron ◽  
Fiber Matrix ◽  
Ion Erosion ◽  
Row Of Fibers

The morphology and composition of the fiber-matrix interface can best be studied by transmission electron microscopy and electron diffraction. For some composites satisfactory samples can be prepared by electropolishing. For others such as aluminum alloy-boron composites ion erosion is necessary.When one wishes to examine a specimen with the electron beam perpendicular to the fiber, preparation is as follows: A 1/8 in. disk is cut from the sample with a cylindrical tool by spark machining. Thin slices, 5 mils thick, containing one row of fibers, are then, spark-machined from the disk. After spark machining, the slice is carefully polished with diamond paste until the row of fibers is exposed on each side, as shown in Figure 1.In the case where examination is desired with the electron beam parallel to the fiber, preparation is as follows: Experimental composites are usually 50 mils or less in thickness so an auxiliary holder is necessary during ion milling and for easy transfer to the electron microscope. This holder is pure aluminum sheet, 3 mils thick.

Temperature Dependence of the Critical Electron Dose for Fatty Acid Monolayers

1982 ◽  
Vol 40 ◽  
pp. 78-79
Author(s):  
Kenneth H. Downing ◽  
Robert M. Glaeser
Keyword(s):  
Electron Beam ◽  
Fatty Acid ◽  
Inelastic Scattering ◽  
Temperature Dependence ◽  
Structural Damage ◽  
Direct Result ◽  
Second Step ◽  
Strong Temperature Dependence ◽  
Electron Dose ◽  
Covalent Bonds

The structural damage of molecules irradiated by electrons is generally considered to occur in two steps. The direct result of inelastic scattering events is the disruption of covalent bonds. Following changes in bond structure, movement of the constituent atoms produces permanent distortions of the molecules. Since at least the second step should show a strong temperature dependence, it was to be expected that cooling a specimen should extend its lifetime in the electron beam. This result has been found in a large number of experiments, but the degree to which cooling the specimen enhances its resistance to radiation damage has been found to vary widely with specimen types.

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