Zobrazeno 1 - 10
of 48
pro vyhledávání: '"V. Steflekova"'
Autor:
D. Zhechev, V. Steflekova
Publikováno v:
AIP Conference Proceedings.
Publikováno v:
Contributions to Plasma Physics. 55:538-544
The galvanic manifestation of two transformations of degenerate magnetic states of the neon atom, namely self-alignment non-alignment and alignment orientation is studied by monitoring the voltage across the discharge in a range of hollow cathode dis
Autor:
G. Malcheva, Georgi Nekhrizov, S. Alexandrov, T. Hristova, M.G. Grozeva, G. Ivanov, Krastan B. Blagoev, V. Steflekova, V. Tankova
Publikováno v:
SPIE Proceedings.
In the present work, we report on the analysis of archaeological metal artefacts from Late Bronze Age, performed by means of Laser Induced Breakdown Spectroscopy (LIBS). The experiment was carried out at ambient air and at 1064 nm of a Nd:YAG laser w
Autor:
Stefan Karatodorov, DB Diana Mihailova, J. van Dijk, J.J.A.M. van der Mullen, V. Steflekova, M.G. Grozeva, V. Mihailov
Publikováno v:
Journal of Physics: Conference Series. 715(1)
A new modified analytical scheme of laser ablation-hollow cathode discharge (LA- HCD) for elemental analysis is reported. The novelty is the use of a hollow cathode with a longitudinal slit. This slit enables registration of the axial species distrib
Autor:
D. Zhechev, V. Steflekova
Publikováno v:
Spectroscopy Letters. 44:47-51
Simultaneously recorded spatially-resolved profiles of He I 492.2 nm singlet line are used in hollow cathode discharge plasma diagnostic. A shift of the line center is observed. Both shift and lower pressure branch of Lorentz half-width depend equall
Publikováno v:
Spectroscopy Letters. 43:167-171
Two self-sustained unstable modes for operation of a hollow cathode discharge (HCD) are observed under some i-V operating points of both positive and negative dynamic resistance. The instabilities manifest themselves either as oscillations or pulsati
Publikováno v:
Journal of Physics: Conference Series
Publikováno v:
Spectroscopy Letters. 42:513-517
The galvanic behavior of a hollow cathode discharge versus an external weak magnetic field is investigated. The application of this field leads to disordering of the self-aligned states, which is detected as a resonance in the discharge current, name
Publikováno v:
Vacuum. 82:455-458
In this paper, ion sputtering of cathode material in a specific type of glow discharge—hollow cathode discharge (HCD)—is analyzed. To estimate both real sputtering yield and screening effect of the buffer gas, two different methods—combination