A5043302209- Mass Spectrometry Techniques and Applications
- Atomic and Molecular Physics
- Advanced Chemical Physics Studies
- Photochemistry and Electron Transfer Studies
- Plasma Diagnostics and Applications
- Quantum, superfluid, helium dynamics
- Photocathodes and Microchannel Plates
- Spectroscopy and Quantum Chemical Studies
- Chemical Reactions and Mechanisms
- Laser-induced spectroscopy and plasma
- Astro and Planetary Science
- Advanced Chemical Sensor Technologies
- Ion-surface interactions and analysis
- Particle accelerators and beam dynamics
- Laser-Plasma Interactions and Diagnostics
- Nuclear Physics and Applications
- Analytical Chemistry and Chromatography
- Porphyrin and Phthalocyanine Chemistry
Comenius University Bratislava
2011-2021
In this work, we present an experimental study of dissociative excitation CH4 utilizing a crossed electron molecular beam experiment. Methane was excited by nearly monochromatic electrons generated trochoidal monochromator. The products were identified on the basis emission spectra in ultraviolet–visible (UV/VIS) spectral range. functions recorded as function energy for different bands fragments (Balmer series H: n = 3,4...9→2, and moreover, CH: A2Δ→X2Π, B2Σ−→ X2Π, C2Σ+→ CH+: B1Δ→ A1Π, CI:...
2,4,6-trichloroanisole and 2,4,6-tribromoanisole were investigated by means of electron transmission spectroscopy two different types dissociative attachment spectrometers. The results obtained interpreted with the support density functional theory calculations. dominant decay channels temporary molecular negative ions lead to formation Cl− Br− in low energy region. Formation long-lived parent anions is observed at thermal energies. Their relative intensity depends on experimental time...
The optical emission spectrum of acetylene excited by monoenergetic electrons was studied in the range 190–660 nm. dissociative excitation and ionization associated with ions initiated electron impact were dominant processes contributing to spectrum. dominated atomic lines (hydrogen Balmer series, carbon) molecular bands (CH(A–X), CH(B–X), CH+(B–A), C2). Besides discrete transitions, we have detected continuum radiation ethynyl radical C2H(A–X). For most important measured absolute...
We report results of an experimental study focused on the fluorescence H2 initiated by impact quasi-monochromatic electrons. The emission spectra molecules at electron energies 25 eV, 50 eV and 100 have been measured in spectral range 320–670 nm. spectrum is dominated Balmer lines, Fulcher α, β, γ δ bands different singlet transitions H2. In addition to atomic lines molecular bands, presence continuum radiation present whole studied range. determined cross sections (ECS) for particular...
The excitation of nitromethane (CH3 NO2 ), which is an important propellant and prototypic molecule for large class explosives, has been investigated by electron impact subsequent emission photons in the UV-VIS spectral region between 300 nm 670 nm. Emission spectrum was recorded at energy 50 eV. New dissociative channels were observed through appearance different CH, CN, NH, OH NO bands, Balmer series atomic hydrogen. In addition, relative cross sections transitions selected fragments....
We report our recent experimental study regarding H2 and D2 continuum radiation (a3Σg + → b3Σu +) in the spectral range of 200 – 650 nm, excited by electron impact at near-threshold energies. In contrast to earlier studies, present results indicate that is detectable above 500 nm. To supplement this, we excitation-emission photon efficiency curves (PEC) measured with precautions taken rule out other possible signal sources.
The electron impact excitation of N2O was studied using the crossed electron-molecular beams method. Optical emission spectrum initiated by 50 eV recorded within range 200-700 nm. Main bands arise from excited ion state N2O+(A2Σ) and dissociative into N2+(B2Σ+u). rotationally un-resolved excitation-emission cross sections for selected transitions were scaled to absolute values their dependence on energy determined. Several them determined first time.