Zobrazeno 1 - 10
of 186
pro vyhledávání: '"Ivan V. Tomov"'
Autor:
S. Vassilev, Ivan V. Tomov
Publikováno v:
Powder Diffraction. 28:S301-S314
To gain accuracy and, hence, physical reality of the data acquired by XRD measurements of fibre textures, a technique is elaborated to achieve experimental values, which are free of extinction effects. Its elaboration is based on combining basic defi
Publikováno v:
Proceedings of the National Academy of Sciences. 105:15235-15240
The photoredox reaction of trisoxalato cobaltate (III) has been studied by means of ultrafast extended x-ray absorption fine structure and optical transient spectroscopy after excitation in the charge-transfer band with 267-nm femtosecond pulses. The
Publikováno v:
Inorganic Chemistry. 47:2024-2032
The photoredox reaction of ferrioxalate after 266/267 nm excitation in the charge transfer band has been studied by means of ultrafast extended X-ray absorption fine structure (EXAFS) analysis, optical transient spectroscopy, and quantum chemistry ca
Autor:
S. Vassilev, Ivan V. Tomov
Publikováno v:
Zeitschrift für Kristallographie Supplements. 2008:219-225
Autor:
S. Vassilev, Ivan V. Tomov
Publikováno v:
Solid State Phenomena. 130:43-46
Accounting for secondary extinction (SE) of the intensities measured from a textured film by means of conventional X-ray diffractometer, a new X-ray diffraction method is described for determination of film thickness. Physically, the problem is restr
Publikováno v:
Journal of the Chinese Chemical Society. 54:1619-1628
The evolution of transient structures induced in gold crystals by irradiation with 400 nm, 100 fs laser pulses has been measured by means of time resolved x-ray diffraction. The data show that the photon/electron interaction generates a hot electron
Autor:
Ivan V. Tomov
Publikováno v:
Zeitschrift für Kristallographie Supplements. 2007:131-136
Publikováno v:
Chemical Physics Letters. 437:50-55
By means of ultrafast optical transient spectroscopy and EXAFS we have measured the transient spectra kinetics and Fe–O bond length of the ferrioxalate redox reaction transients. Based on Fe–O bond distances of the photoredox intermediates and qu
Publikováno v:
Chemical Physics Letters. 419:374-378
Femtosecond time-resolved X-ray diffraction is used to probe reversible lattice changes of a 150-nm Au(1 1 1) crystal on mica heated with 100-femtosecond laser pulses with fluence below the damage and melting threshold. The lattice strain generated t
Publikováno v:
Chemical Physics Letters. 389:363-366
A table top high power femtosecond laser system, that produces 130 fs, 100 mJ pulses at 10 Hz repetition rate was used to generate hard X-ray pulses from moving Cu, Mo and W wire targets. The X-ray pulses were focused with a polycapillary X-ray lens