Zobrazeno 1 - 10
of 59
pro vyhledávání: '"M. Kazakevich"'
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 12, Iss 4, p 040701 (2009)
A magnetron-driven microtron injector has been developed for a terahertz free electron laser (FEL). An internal injection system was chosen for the microtron to achieve a compact and inexpensive design. The system provides acceleration of electrons w
Externí odkaz:
https://doaj.org/article/84414d228e9544a78f0c3083427f7691
Autor:
J. Y. Lee, S. H. Park, D. H. Kim, K. N. Kim, B. H. Cha, Y. U. Jeong, J. Sunwoo, G. M. Kazakevich, K. Lee, K. H. Jang, Y.-H. Cha, J. Mun
Publikováno v:
Journal of the Korean Physical Society. 59:3251-3255
Publikováno v:
Acta Materialia. 59:2309-2321
This work studies the strength dependence of single-crystal metal specimens of submicrometer size on their dimensions. The emphasize is on the plasticity mechanisms controlled by nucleation of dislocations in the presence of free surfaces. We employe
Autor:
Y. U. Jeong, G. M. Kazakevich, S. H. Park, K. Lee, J. Mun, K. H. Jang, J. Y. Lee, J. Sunwoo, K. N. Kim, B. C. Lee, Y.-H. Cha, H. Cha, D. H. Kim, B. H. Cha
Publikováno v:
Siberian Journal of Physics. 5:50-58
We have designed a table-top terahertz (THz) free electron laser (FEL). The main issue of the FEL design is to decrease radiation losses at a FEL resonator except outcoupling ratio. Also reducing the number of undulator periods and total undulator le
Publikováno v:
Acta Materialia. 56:5640-5652
We performed a nanoindentation study of the inherent mechanical properties of grain boundaries and their triple junctions in molybdenum tricrystals of controlled geometry grown from the melt. A region with increased hardness is revealed in the vicini
Autor:
R. Fliller, J. Li, Philippe Piot, M. C. Thompson, James Santucci, Gil Travish, H. Edwards, R. Tikhoplav, H. Badakov, G. M. Kazakevich, J. B. Rosenzweig
Publikováno v:
International Journal of Modern Physics A. 22:3979-3987
A gaussian underdense plasma lens with peak density 5 × 1012 cm −3 and a full width half maximum (FWHM) length of 2.2 cm has been used to focus a relativistic electron beam. This plasma lens is equivalent in strength to a quadrupole magnet with a
Publikováno v:
Solid State Phenomena. 114:265-270
ECAP (equal channel angular pressing) is a well-known severe plastic deformation method used to produce ultra-fine grained materials. The dimensions of ECAP specimens are usually in the centimeter range. For producing high strength wires or fibres wi
Publikováno v:
Materials Science and Engineering: A. :165-168
We propose to use porous steel ‘dies’ for solid state ‘infiltration’ with a metallic material by a variant of the known forcefill process. Severe plastic deformation (SPD) that occurs during the material's plastic flow through a tortuous chan
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 15:3585-3588
Nanoindentation and nanoscratching using atomic force microscope (AFM) were employed to study the local mechanical properties of high TC superconductors YBCO thin films featuring high critical current density. Two YBCO films sputtered on two differen
Publikováno v:
Materials Letters. 59:1434-1438
We used nanoindenting atomic force microscopy (AFM) for studying mechanical properties of the polycrystalline copper film deposited on Si substrates and patterned into 4–8 μm wide lines. The dependence of mechanical properties of the line on a dis