Investigation of Diffusion Processes at Metal Target Irradiation by Pulsed Plasma Flow
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Date
2016-07-18
Authors
Zhukeshov, A. M.
Mazhit, Z.
Journal Title
Journal ISSN
Volume Title
Publisher
21st International Symposium on Heavy Ion Inertial Fusion. Autonomous Organization of Education “Nazarbayev University”
Abstract
Pulsed irradiation of metals and alloys by plasma
flows and ion beams follows by an emergence of
significant temperature gradients and thermo
mechanical stresses in near-surface region of a
target [1-3]. Processes of heat and mass transfer are
intensified. Diffusion is stimulated by temperature
growth. Diffusion coefficients are increased on 5-8
orders of magnitude in compare with their stable
values, corresponding to the irradiation in
continuous regime. A depth of impurity particles
penetration doesn’t exceed the value of projectile
path length in metals. At deceleration of the
impurity particles their collisions with atoms nuclei
cause atoms displacement of crystal lattice sites.
Because of medium continuity a dominant
mechanism of structural damages creation could be
atom-atomic collisions cascades, which involve
large area, several times exceeding a volume of
near-surface region of the target. It is obvious, that
the large part of diffusion flow is transferred within
displacement cascades [1]...
Description
Keywords
diffusion processes, metal target irradiation, plasma flow, Research Subject Categories::NATURAL SCIENCES::Physics::Elementary particle physics
Citation
Zhukeshov A. M., Mazhit Z., (2016) Investigation of Diffusion Processes at Metal Target Irradiation by Pulsed Plasma Flow. 21st International Symposium on Heavy Ion Inertial Fusion. Book of Abstracts. http://nur.nu.edu.kz/handle/123456789/1855