Slep-150m and SLEP-150 compact accelerators of supershort avalanche electron beams and X-rays in atmospheric pressure air

2011 ◽  
Author(s):  
V.F. Tarasenko ◽  
D.V. Rybka ◽  
I.D. Kostyrya ◽  
E.Kh. Baksht
Keyword(s):  
Atmospheric Pressure ◽  
Electron Beams ◽  
X Rays

Supershort Avalanche Electron Beams and X-rays in Atmospheric-Pressure Air

2010 ◽  
Vol 38 (4) ◽  
pp. 741-750 ◽  
Author(s):  
Victor F Tarasenko ◽  
Evgenii Kh Baksht ◽  
Alexander G Burachenko ◽  
Igor D Kostyrya ◽  
Mikhail I Lomaev ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Electron Beams ◽  
X Rays

scholarly journals Observations of X-rays from Laboratory Sparks in Air at Atmospheric Pressure under Negative Switching Impulse Voltages

Atmosphere ◽  
2019 ◽  
Vol 10 (4) ◽  
pp. 169 ◽  
Author(s):  
Mahbubur Rahman ◽  
Pasan Hettiarachchi ◽  
Vernon Cooray ◽  
Joseph Dwyer ◽  
Vladimir Rakov ◽  
...  
Keyword(s):  
Rise Time ◽  
Atmospheric Pressure ◽  
Opposite Polarity ◽  
X Rays ◽  
X Ray ◽  
Impulse Voltage ◽  
First Time ◽  
Switching Impulses ◽  
Low Rate

We present observations of X-rays from laboratory sparks created in the air at atmospheric pressure by applying an impulse voltage with long (250 µs) rise-time. X-ray production in 35 and 46 cm gaps for three different electrode configurations was studied. The results demonstrate, for the first time, the production of X-rays in gaps subjected to switching impulses. The low rate of rise of the voltage in switching impulses does not significantly reduce the production of X-rays. Additionally, the timing of the X-ray occurrence suggests the possibility that the mechanism of X-ray production by sparks is related to the collision of streamers of opposite polarity.

scholarly journals Supershort avalanche electron beam generation in gases

2008 ◽  
Vol 26 (4) ◽  
pp. 605-617 ◽  
Author(s):  
V.F. Tarasenko ◽  
E.H. Baksht ◽  
A.G. Burachenko ◽  
I.D. Kostyrya ◽  
M.I. Lomaev ◽  
...  
Keyword(s):  
High Pressure ◽  
Electron Beam ◽  
Atmospheric Pressure ◽  
Electron Beams ◽  
Solid Angle ◽  
Generation Mechanism ◽  
Full Width ◽  
Half Maximum ◽  
Electron Beam Pulse ◽  
Supershort Avalanche Electron Beam

AbstractThis paper reports on the properties of a supershort avalanche electron beam generated in the air or other gases under atmospheric pressure and gives the analysis of a generation mechanism of supershort avalanche electron beam, as well as methods of such electron beams registration. It is reported that in the air under the pressure of 1 atm, a supershort (<100 ps) avalanche electron beam is formed in the solid angle more than 2π steradian. The electron beam has been obtained behind a 45 µm thick Al-Be foil in SF6 and Xe under the pressure of 2 atm, and in He, under the pressure of about 15 atm. It is shown that in SF6 under the high pressure (>1 atm) duration (full width at half maximum) of supershort avalanche electron beam pulse is about 150 ps.

scholarly journals Backward runaway electrons in a subnanosecond air discharge at atmospheric pressure

2015 ◽  
Vol 34 (1) ◽  
pp. 23-30 ◽  
Author(s):  
Victor F. Tarasenko ◽  
Igor' D. Kostyrya ◽  
Dmitry V. Beloplotov
Keyword(s):  
High Voltage ◽  
Atmospheric Pressure ◽  
Exposure Dose ◽  
X Rays ◽  
Runaway Electrons ◽  
Full Width ◽  
Half Maximum ◽  
X Ray ◽  
Grid Cathode ◽  
Air Discharge

AbstractIn the paper, we study the conditions for the generation of backward runaway electrons through a grounded grid cathode in atmospheric pressure air at high-voltage pulses with a full width at half maximum of 1 ns and risetime of 0.3 ns applied to the gap from a SLEP-150 pulser. The study confirms that backward runaway electrons and X-rays do arise near grid cathodes in atmospheric pressure air. It is shown that the current of the backward beam and the X-rays from the gas diode depend differently on the interelectrode distance. The average X-ray exposure dose in a pulse is more than 3.5 mR.

Solar Electron Beams Detected in Hard X-Rays and Radio Waves

1995 ◽  
Vol 455 ◽  
pp. 347 ◽  
Author(s):  
Markus J. Aschwanden ◽  
Arnold O. Benz ◽  
Brian R. Dennis ◽  
Richard A. Schwartz
Keyword(s):  
Electron Beams ◽  
X Rays ◽  
Radio Waves

On the Primary X-Ray Analyzer

1965 ◽  
Vol 9 ◽  
pp. 508-514 ◽  
Author(s):  
Shizuo Kimoto ◽  
Masayuki Sato ◽  
Hitoshi Kamada ◽  
Takuzi Ui
Keyword(s):  
Electron Beams ◽  
Spectrochemical Analysis ◽  
Specimen Surface ◽  
X Rays ◽  
Light Elements ◽  
X Ray ◽  
Very High

AbstractThe primary X-ray analyzer is used for nondestructive spectrochemical analysis of solid specimens. Accelerated electron beams bombard the specimen surface directly and generate primary X-rays which are measured in a vacuum spectrometer. The method of primary X-ray spectroscopy is superior to the fluorescence X-ray spectroscopy because (1) detectable sensitivity for such light elements as magnesium and aluminum is very high, and (2) the correction of the measured value for self-absorption of X-rays by the specimen itself is low. The performance of the instrument and applications are reported.

Effect of Irradiation, Packaging, and Postirradiation Cooking on the Thiamin Content of Chicken Meat

1999 ◽  
Vol 62 (11) ◽  
pp. 1303-1307 ◽  
Author(s):  
SABINE VAN CALENBERG ◽  
BEN PHILIPS ◽  
WIM MONDELAERS ◽  
OSWALD VAN CLEEMPUT ◽  
ANDRE HUYGHEBAERT
Keyword(s):  
Storage Temperature ◽  
Electron Beams ◽  
Vacuum Packaging ◽  
Chicken Meat ◽  
Chicken Breast ◽  
X Rays ◽  
Breast Meat ◽  
The Mean ◽  
And Storage ◽  
Chicken Breast Meat

The effect of irradiation with X rays or electrons, irradiation and storage temperature, and postirradiation cooking on the thiamin content of vacuum- or air-packaged minced chicken meat was examined. Samples irradiated with 3-kGy X rays (50 Gy/min) or electrons (5 kGy/min) contained less thiamin than the control specimens, but no differences between both irradiation methods were detected. The thiamin content in samples stored and/or irradiated at 5°C was between 13 and 24 μg per 100-g product lower than in samples stored and/or ionized at −18°C. The same difference in thiamin content was found for specimens packaged in a vacuum or air package, respectively. Vacuum packaging lead to a greater loss of drip than air-packaged samples. The biggest loss of thiamin, 31.1 and 28.0% for X rays and electron beams, respectively, was measured for vacuum-packaged specimens stored and irradiated at 5°C. Compared with the cooked minced chicken breast meat, a higher thiamin content (6 to 17 μgof thiamin per 100-g product) was obtained for the raw samples. When irradiation and vacuum packaging were compared as two separate preservation techniques, the two methods had approximately the same effect on the thiamin content of the minced chicken meat. The mean temperature of the samples after cooking was 87.2 ± 4.9°C. However, significant differences in internal temperature after cooking of the samples were measured between air- and vacuum-packaged samples.

scholarly journals On formation of subnanosecond electron beams in air under atmospheric pressure

2004 ◽  
Vol 22 (1) ◽  
pp. 75-82 ◽  
Author(s):  
V.F. TARASENKO ◽  
V.S. SKAKUN ◽  
I.D. KOSTYRYA ◽  
S.B. ALEKSEEV ◽  
V.M. ORLOVSKII
Keyword(s):  
Electron Beam ◽  
Atmospheric Pressure ◽  
Electron Beams ◽  
Experimental Studies ◽  
Maximum Amplitude ◽  
Beam Current ◽  
High Energy ◽  
Critical Importance ◽  
Critical Fields ◽  
Energy Pulse

This article reports on experimental studies of subnanosecond electron beams formed in air under atmospheric pressure. An electron beam with an amplitude of ∼170 A with a duration at FWHM of ∼0.3 ns has been obtained. Based on beam temporal characteristics and discharge spatial characteristics, the critical fields were supposed to be reached at plasma approach to anode. Simultaneously, the sharp high-energy pulse of e-beam current is generated. Of critical importance is the cathode type and occurrence on the cathode of plasma protrusions. It is shown that to get maximum amplitude of the electron beam in the gas diode, the discharge in the gas diode should be volumetric.

scholarly journals Runaway electrons and x-rays from a corona discharge in atmospheric pressure air

2011 ◽  
Vol 13 (11) ◽  
pp. 113035 ◽  
Author(s):  
Tao Shao ◽  
V F Tarasenko ◽  
Cheng Zhang ◽  
D V Rybka ◽  
I D Kostyrya ◽  
...  
Keyword(s):  
Corona Discharge ◽  
Atmospheric Pressure ◽  
X Rays ◽  
Runaway Electrons
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