Results 251 to 260 of about 427,941 (305)

Charging and trapping of macroparticles in near-electrode regions of fluorocarbon plasmas with negative ions [PDF]

Physics of Plasmas, 2001
Charging and trapping of macroparticles in the near-electrode region of fluorocarbon etching plasmas with negative ions is considered. The equilibrium charge and forces on particles are computed as a function of the local position in the plasma presheath
K N Ostrikov, Sugai H
exaly   +2 more sources

Some of the next articles are maybe not open access.

Related searches:

Ion–Molecule Reactions of Negative Ions. I. Negative Ions of Sulfur

The Journal of Chemical Physics, 1968
Negative ions from carbonyl sulfide and carbon disulfide have been studied in a time-of-flight mass spectrometer. The principal ions formed by dissociative resonance electron capture in carbonyl sulfide are S− and O−. Those from carbon disulfide are S− and CS−.
John G. Dillard, J. L. Franklin
openaire   +1 more source

Autodetachment of negative ions

Physical Review A, 1991
The autodetachment of 1s2s2p 4p0 in He- and nsnp 2 4P(e) in Be- (n = 2), Mg- (n = 3), and Ca- (n = 4) is calculated using an extension to continum processes of the multiconfiguration Hartree-Fock method. The main interest is to investigate the processes giving rise to long-lived, metastable states in negative ions. In He- and Be- our results agree with
, Brage, , Fischer
openaire   +2 more sources

Negative ions

Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1979
Abstract During the last few years, improvements in ionization techniques have revived interest in negative ion mass spectrometry and its applications. Ion sources that operate at pressures of up to 1 Torr (133 Pa) produce high concentrations of low energy electrons which may react directly with suitable sample molecules to form ...
openaire   +2 more sources

Photodetachment of negative halogen ions

Physical Review A, 1987
Results of relativistic random-phase approximation calculations of photodetachment cross sections and angular-distribution asymmetry parameters are presented for the outer shells of the negative ions ${\mathrm{F}}^{\mathrm{\ensuremath{-}}}$, ${\mathrm{Cl}}^{\mathrm{\ensuremath{-}}}$, ${\mathrm{Br}}^{\mathrm{\ensuremath{-}}}$, and ${\mathrm{I}}^{\mathrm{
, Radojevic, , Kelly, , Johnson
openaire   +2 more sources

Photodetachment of the positronium negative ion

Physical Review A, 1985
The photodetachment cross section of the negative positronium ion is calculated. The description of the initial bound state is simplified by representing it by an asymptotic form whose normalization comes from the most accurate Hylleraas wave function of the ion. The final state is assumed to be a plane wave.
, Bhatia, , Drachman
openaire   +2 more sources

Production of Negative Ions and Noise in Negative Ion Beams

Physical Review, 1953
In a search for high current sources of low energy (\ensuremath{\approx}100 ev) negative atomic ions of hydrogen and oxygen, five types of sources were examined. The most promising practical source for both ${\mathrm{H}}^{\ensuremath{-}}$ and ${\mathrm{O}}^{\ensuremath{-}}$ was found to be the dc glow discharge from which beams of ${10}^{\ensuremath ...
openaire   +1 more source

Unexpected Negative-Ion Conversion in Grazing Scattering of Negative Ions on HOPG

The Journal of Physical Chemistry C, 2021
An experimental study of 8.5-22.5 keV-energy C-, O-, and F- ion scattering from an HOPG surface has been performed at a grazing scattering angle. For a given incident angle or impact velocity, the F- fraction is the highest and the C- fraction is the smallest among these three projectiles, which is explained with the order of the electron affinity ...
Xinyue Guo, Pinyang Liu, Bin Ding, Luyao Zhang, Jiawei Wang, Yue Guo, Guang Zhong, Xuan Liu, Lei Wang, Mingxuan Wei, Yanling Guo, Lin Chen, Ximeng Chen   +12 more
openaire   +1 more source

Negative ions of ethylene sulfite

The Journal of Chemical Physics, 2005
The formation of negative ions in molecular beams of ethylene sulfite (ES, alternately called glycol sulfite or ethylene glycol, C2H4SO3) molecules has been studied using both Rydberg electron transfer (RET) and free electron attachment methods. RET experiments with jet-cooled ES show an unexpected broad profile of anion formation as a function of the ...
W D, Robertson, N I, Hammer, J E, Bartmess, R N, Compton, K, Diri, K D, Jordan   +5 more
openaire   +2 more sources