RECENT PUBLICATIONS

1. S. Carbajo, I. D. Howlett, F. Brizuela, K. S. Buchanan, M. C. Marconi, W. Chao, E. H. Anderson, I. Artioukov, A. Vinogradov, J. J. Rocca, and C. S. Menoni, "Sequential single-shot imaging of nanoscale dynamic interactions with a table-top soft x-ray laser," Opt Lett 37, 2994-2996 (2012).

   We demonstrate the first real-space recording of nanoscale dynamic interactions using single-shot soft x-ray (SXR) full-field laser microscopy. A sequence of real-space flash images acquired with a table-top SXR laser was used to capture the motion of a rapidly oscillating magnetic nanoprobe. Changes of 30 nm in the oscillation amplitude were detected when the nanoprobe was made to interact with stray fields from a magnetic sample. The table-top visualization of nanoscale dynamics in real space can significantly contribute to the understanding of nanoscale processes and can accelerate the development of new nanodevices.

2. A. A. Shul'zhenko, E. E. Ashkinazi, A. N. Sokolov, V. G. Gargin, V. G. Ral'chenko, V. I. Konov, L. I. Aleksandrova, R. K. Bogdanov, A. P. Zakora, Vlasov, II, I. A. Artyukov, and Y. S. Petronyuk, "Novel Hybrid Ultrahard Material," J. Superhard Mater. 32, 293-300 (2010).

   A novel hybrid ultrahard polycrystalline composite material has been produced by the reinforcement of the polycrystalline diamond composite thermostable material with a CVD grown polycrystalline diamond. It has been found that a thermal treatment of a polycrystalline diamond grown at high pressure ensures an increase of the CVD diamond hardness from 77 to 140 GPa. Tests of drilling tools have shown that in turning granite of the XI drillability index the wear intensity of rock destruction elements of the hybrid ultrahard material is lower than that of rock destruction elements of polycrystalline diamond composite thermostable material by a factor of 14.

3. I.A. Artyukov, A.V. Vinogradov, E.A. Bugaev, A.Yu. Devizenko, V.V. Kondratenko, Yu.S. Kasyanov, "X-ray microscopy in the sphere of " carbon window "with the use of multilayer optics and laser-plasma source, "Journal of Experimental and Theoretical Physics 136, 1009-1022 (2009).

   The results of multilayer mirrors manufacturing and testing for X-ray optical systems operating in the range of "carbon window " (wave lengths from 4.5 to 5 nm) and also the results of their use in experiments to obtain the x-ray images of the internal structure of organic objects have been represented. The developed approaches of manufacturing and control of multi-layer gradient Co / C coatings have allowed to create an X-ray multimirror system with a currently record transmission and aperture ratio. The use of created X-ray optics with a high spatial resolution will greatly expand the sphere of practical application of the soft X-ray absorption microscopy based on compact laser-plasma sources.

4. I.A. Artyukov, V.A. Bourtsev, A.V. Vinogradov, A.Yu. Devizenko, N.V. Kalinin, I.A. Kopylets, V.V.Kondratenko, V.E. Pookha, B.A. Savitskij, R.M.Feschenko, "Sliced   linear zone plates for hard X-ray radiation," Journal of Applied Physics 82, 101-106 (2012).

   Linear zone plates for hard (E> 10 keV) X-ray radiation on the basis of slices of W5Si3 / Si multilayer coatings fabricated by a magnetron sputtering have been considered. According to numerical calculations this pair of materials provides a high efficiency in the first and the second diffraction orders. It has been experimentally found that it is possible to synthesize the multilayer structures of high quality containing hundreds of layers on silicon and glass substrates. It is shown that their slices can be obtained by ion-etching of the multilayer coating through a mask.

5. I.A. Artyukov, A.V. Vinogradov, N.L. Popov, V.N. Seleznev, "On a problems simulation of coherent optics of grazing incidence," Quantum Electronics 42 (2), 140-142 (2012).

   We propose a method of modeling of the objects optical images by sloping or sliding coherent beams. Theoretical approach is based on the solution of a parabolic equation, generalizing the Fresnel integral. Numerical results are given for the experimental conditions close to those implemented when using modern soft X-ray lasers. The developed technique can be also used to simulate the X-ray imaging systems, created on the beams of synchrotron radiation and free electron lasers.