Nechay A. Polarization bremsstrahlung from electronically excited atoms, icosahedral, and crystalline clusters of xenon

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0415U003107

Thesis Registration Form

0415U003107.pdf

Applicant for

Specialization

  • 01.04.07 - Фізика твердого тіла

31-03-2015

Specialized Academic Board

Д 64.175.03

B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine

Essay

Object: Bremsstrahlung and polarization bremsstrahlung (PBS) arising from collisions of electrons with rare-gas targets. Purpose: Finding the effect of the structure of surface and core layers of Xe clusters on the formation of PBS spectra. Methods: Emission spectroscopy of rare-gas beams in the ultra-soft X-ray range. Results: Cooperative effect contribution to the formation of PBS in clusters was found for the first time as Xe targets are changed from atomic to cluster ones. A special state of clusters was found in which the cluster core is crystalline while a surface layer remains disordered. Range of application: nanophysics, X-ray spectroscopy

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