Thin Wires and Edge Imaging Using Hard Bremsstrahlung Generated by a Microfocal Target of a Betatron

2021 ◽  
Vol 41 (1) ◽  
Author(s):  
M. M. Rychkov ◽  
V. V. Kaplin ◽  
V. A. Smolyanskii
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Author(s):  
G.D. Danilatos

The possibility of placing the specimen in a gaseous medium in the environmental SEM (ESEM) has created novel ways for detection of signals from the beam-specimen interactions. It was originally reported by Oanilatos that the ionization produced by certain signals inside the conditioning medium can be used to produce images. The aim of this report is to demonstrate some of the improvements on the system that have occurred thereafter.Two straight thin wires are aligned horizontally along a direction normal to the direction of the two scintillator backscattered electron (BSE) detectors reported elsewhere. The free end tips of the wires are about 5 mm apart halfway between the specimen and the pressure limiting aperture (specimen distance = 1.5 mm). The other end of each wire makes contact with the input of a separate preamplifier, two of which are built inside a shielding aluminum stub. With such a design, interference noise from the input cables is avoided.


Nano Select ◽  
2020 ◽  
Author(s):  
Yuwen Wei ◽  
Sangmin Lee ◽  
Minjae Choe ◽  
Priyanuj Bhuyan ◽  
Eunseon Kim ◽  
...  
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2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Carlo Forestiere ◽  
Giovanni Miano ◽  
Bruno Miranda

2012 ◽  
Vol 22 (3) ◽  
pp. 6200304-6200304 ◽  
Author(s):  
Y. Yamada ◽  
M. Kanazawa ◽  
T. Ohno ◽  
K. Tachikawa ◽  
K. Kajikawa ◽  
...  
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1992 ◽  
Vol 114 (2) ◽  
pp. 255-260 ◽  
Author(s):  
K. Sato

Thin wires of various diameters from 0.07 to 0.7 mm are examined about appearances and characteristics of bubble occurrence behind them in the range of low Reynolds numbers. The appearance of bubbles is very dependent on diameters of wires. Two different types of bubbles can be observed in the present experiment. One is a streamer-type bubble for smaller wires and the other is a small unspherical bubble for larger wires. The incipient and the desinent values of cavitation number also change greatly with the bubble types. The streamer-type bubble is related to the presence of laminar separation zone and the growth due to air diffusion. The small unspherical bubble can be mainly attributed to the motion of rolled-up vortices and the growth due to vaporization.


1976 ◽  
Vol 12 (7) ◽  
pp. 166
Author(s):  
L. Solymar ◽  
K. Pontoppidan
Keyword(s):  

2011 ◽  
Vol 13 (12) ◽  
pp. 1087-1095 ◽  
Author(s):  
Jan-Marten Seitz ◽  
Dennis Utermöhlen ◽  
Eric Wulf ◽  
Christian Klose ◽  
Friedrich-Wilhelm Bach
Keyword(s):  

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