Sputtering and the formation of nanometre holes in NhAI under intense electron beam irradiation

2004 ◽  
pp. 329-332
Keyword(s):  
Electron Beam ◽  
Electron Beam Irradiation ◽  
Beam Irradiation ◽  
Intense Electron Beam ◽  
Intense Electron

Study thermodynamic assessment of the B-C and B-Si binary systems with swift heavy ions and high intense electron beam irradiation at the low temperature

2020 ◽  
Vol 34 (34) ◽  
pp. 2050395
Author(s):  
Matlab N. Mirzayev
Keyword(s):  
Electron Beam ◽  
Low Temperature ◽  
Heavy Ions ◽  
Electron Beam Irradiation ◽  
Electron Beams ◽  
High Energy ◽  
Beam Irradiation ◽  
Swift Heavy Ions ◽  
Intense Electron Beam ◽  
Intense Electron

B4C and B6Si samples have been irradiated by using swift heavy ions and high intense electron beam. Ion irradiation of the samples was carried at the different electron fluences [Formula: see text], [Formula: see text] and [Formula: see text] cm[Formula: see text] ion/cm2, and energy of ions flux 167 MeV. Also, the samples were irradiated with high energy electron beams at the linear electronic accelerator at different electron fluencies up to [Formula: see text] cm[Formula: see text] and energy of electron beams 2.5 MeV and current density of electron beams [Formula: see text]s. The unirradiation and irradiation of the thermodynamic kinetics of samples at low-temperature change with a differential mechanism. In the DSC curves, at the low temperature for unirradiation and irradiation, boron carbide and boron silicide samples do not undergo phase transition. But at the [Formula: see text] K temperature range, the thermodynamic mechanism of ions and electron beam irradiation are very difficult and measuring the temperature of conductivity, thermal conductivity, calibration factor, specific heat capacity becomes more complicated.

NOx Removal in N2 by Pulse Intense Electron Beam Irradiation

1998 ◽  
Vol 37 (Part 2, No. 1A/B) ◽  
pp. L91-L93 ◽  
Author(s):  
Yoshiro Nakagawa ◽  
Hiroshi Kawauchi
Keyword(s):  
Electron Beam ◽  
Electron Beam Irradiation ◽  
Nox Removal ◽  
Beam Irradiation ◽  
Intense Electron Beam ◽  
Intense Electron

Plastic Deformation and Micro-Fracture in SiO2 Induced by Electron Beam Irradiation

1991 ◽  
Vol 235 ◽  
Author(s):  
P. M. Ajayan ◽  
Sumio Iijima
Keyword(s):  
Plastic Deformation ◽  
Electron Beam ◽  
Electron Beam Irradiation ◽  
Beam Irradiation ◽  
Surface Charges ◽  
Video Recordings ◽  
Silica Fibers ◽  
Transmission Electron ◽  
Intense Electron Beam ◽  
The Many

ABSTRACTWe present here experimental results using transmission electron microscopy (TEM) and real time video recordings, of the many dynamic structural instabilities in amorphous silica structures during intense electron beam irradiation. It is observed that while the silica layers on oxidized silicon particles sinter when irradiated uniformly, they undergo necking and extensive plastic deformation when the beam is focused in the neck regions. Extremely thin silica fibers (less than five nanometers in diameter and microns in length) can be produced by the deformation of such necks between particles. The thin fibers and the sharp tips developed from the failure of such structures are seen to spheroidize and blunt when exposed to the electron beam. The instabilities are thought to arise from irradiation induced charging of the insulator surface which expands to reduce the density of accumulated surface charges.

scholarly journals Experimental Study and Mathematical Modeling of the Processes Occurring in ZrN Coating/Silumin Substrate Systems under Pulsed Electron Beam Irradiation

Coatings ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1461
Author(s):  
Nikolay N. Koval ◽  
Tamara V. Koval ◽  
Olga V. Krysina ◽  
Yurii F. Ivanov ◽  
Anton D. Teresov ◽  
...  
Keyword(s):  
Electron Beam ◽  
Surface Temperature ◽  
Electron Beam Irradiation ◽  
Irradiation Time ◽  
Subsequent Treatment ◽  
Beam Irradiation ◽  
Fast Heating ◽  
Pulsed Electron Beam ◽  
Rise Rate ◽  
Intense Electron Beam

This paper presents a study of a combined modification of silumin, which included deposition of a ZrN coating on a silumin substrate and subsequent treatment of the coating/substrate system with a submillisecond pulsed electron beam. The local temperature on the samples in the electron-beam-affected zone and the thickness of the melt zone were measured experimentally and calculated using a theoretical model. The Stefan problem was solved numerically for the fast heating of bare and ZrN-coated silumin under intense electron beam irradiation. Time variations of the temperature field, the position of the crystallization front, and the speed of the front movement have been calculated. It was found that when the coating thickness was increased from 0.5 to 2 μm, the surface temperature of the samples increased from 760 to 1070 °C, the rise rate of the surface temperature increased from 6 × 107 to 9 × 107 K/s, and the melt depth was no more than 57 μm. The speed of the melt front during the pulse was 3 × 105 µm/s. Good agreement was observed between the experimental and theoretical values of the temperature characteristics and melt zone thickness.

Sign in / Sign up

Export Citation Format

Share Document