Polarizabilities of neutral atoms and atomic ions with a noble gas electron configuration

2020 ◽  
Vol 153 (17) ◽  
pp. 174304
Author(s):  
Ashley S. McNeill ◽  
Kirk A. Peterson ◽  
David A. Dixon
Keyword(s):  
Noble Gas ◽  
Electron Configuration ◽  
Neutral Atoms ◽  
Atomic Ions

Discrepancy in Energy Transfer between Medium Energy Noble‐Gas Ions and Neutral Atoms Bombarding Metal Surfaces

1963 ◽  
Vol 34 (9) ◽  
pp. 2810-2812 ◽  
Author(s):  
P. Mahadevan ◽  
J. K. Layton ◽  
A. R. Comeaux ◽  
D. B. Medved
Keyword(s):  
Energy Transfer ◽  
Metal Surfaces ◽  
Noble Gas ◽  
Medium Energy ◽  
Neutral Atoms

Resonance ionization of neutral atoms with applications to surface science, noble gas detection and biomedical analysis

1989 ◽  
Vol 14 (11) ◽  
pp. 751-759 ◽  
Author(s):  
N. Thonnard ◽  
J. E. Parks ◽  
R. D. Willis ◽  
L. J. Moore ◽  
H. F. Arlinghaus
Keyword(s):  
Surface Science ◽  
Noble Gas ◽  
Gas Detection ◽  
Resonance Ionization ◽  
Neutral Atoms ◽  
Biomedical Analysis

scholarly journals Interactions of Ions and Ultracold Neutral Atom Ensembles in Composite Optical Dipole Traps: Developments and Perspectives

Atoms ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 39
Author(s):  
Leon Karpa
Keyword(s):  
Low Temperatures ◽  
Neutral Atom ◽  
Optical Traps ◽  
Neutral Atoms ◽  
Atomic Ions ◽  
Quantum Simulations ◽  
Highly Sensitive ◽  
Optical Dipole Traps ◽  
Trapping Methods ◽  
Three Body

Ion–atom interactions are a comparatively recent field of research that has drawn considerable attention due to its applications in areas including quantum chemistry and quantum simulations. In first experiments, atomic ions and neutral atoms have been successfully overlapped by devising hybrid apparatuses combining established trapping methods, Paul traps for ions and optical or magneto-optical traps for neutral atoms, respectively. Since then, the field has seen considerable progress, but the inherent presence of radiofrequency (rf) fields in such hybrid traps was found to have a limiting impact on the achievable collision energies. Recently, it was shown that suitable combinations of optical dipole traps (ODTs) can be used for trapping both atoms and atomic ions alike, allowing to carry out experiments in absence of any rf fields. Here, we show that the expected cooling in such bichromatic traps is highly sensitive to relative position fluctuations between the two optical trapping beams, suggesting that this is the dominant mechanism limiting the currently observed cooling performance. We discuss strategies for mitigating these effects by using optimized setups featuring adapted ODT configurations. This includes proposed schemes that may mitigate three-body losses expected at very low temperatures, allowing to access the quantum dominated regime of interaction.

scholarly journals Chemistry in Shocked Interstellar Gas

1987 ◽  
Vol 120 ◽  
pp. 275-287
Author(s):  
George F. Mitchell
Keyword(s):  
Chemical Composition ◽  
Molecular Composition ◽  
High Abundance ◽  
Neutral Atoms ◽  
Interstellar Gas ◽  
Atomic Ions ◽  
Dense Cloud ◽  
Cloud Properties ◽  
Diffuse Cloud ◽  
Kinetic Calculations

In its passage through the interstellar gas, a shock imposes massive and irreversible changes on the chemical composition of the gas. The synthesis of molecules from atoms and atomic ions can be highly efficient behind non-dissociative (i.e. slow) shocks. Results of kinetic calculations behind non-dissociative shocks are reviewed here, with emphasis given to the dependence of the postshock molecular composition on initial cloud properties. It is shown that a dense cloud shock can convert essentially all neutral atoms into various molecules. Even in diffuse and unshielded regions, a variety of molecules can attain a high abundance behind shocks. The suggestion that the widespread diffuse cloud species CH+ is shock synthesized is critically examined in the light of new calculations.

scholarly journals The Quantisation of the Screening Constant

1987 ◽  
Vol 40 (3) ◽  
pp. 329 ◽  
Author(s):  
Ian J Miller
Keyword(s):  
Excited States ◽  
Ground State ◽  
Outer Shell ◽  
Electron Configuration ◽  
Neutral Atoms ◽  
Screening Constant ◽  
Quantum Numbers ◽  
Ground State Energies

Relationships are given in which the 'screening defect' is expressed in terms of the quantum numbers n and I for both the ground and excited states of neutral atoms for which the electron configuration can be considered as one electron and a core of completed shells. It is further shown that the same functions determine the ground-state energies for any series of neutral atoms with the same outer shell configuration. An explanation is offered in terms of wavefunctions with fewer nodes than the corresponding hydrogen wavefunctions.

Interactions of noble gas atoms. Processes due to elastic scattering

1989 ◽  
Vol 14 (5) ◽  
pp. 467-604 ◽  
Author(s):  
A.Z. Devdariani ◽  
A.L. Zagrebin ◽  
K.B. Blagoev
Keyword(s):  
Elastic Scattering ◽  
Noble Gas
Sign in / Sign up

Export Citation Format

Share Document