A study of long range anisotropic potentials for CsF, CsCl, and KCl interacting with the rare gases based on measured state‐to‐state rotationally inelastic cross sections. I. Measurements for CsCl and KCl

1981 ◽  
Vol 75 (6) ◽  
pp. 2753-2761 ◽  
Author(s):  
Gerhard Meyer ◽  
J. Peter Toennies
Keyword(s):  
Long Range ◽  
Cross Sections ◽  
Rare Gases ◽  
Measured State

scholarly journals The long-range non-additive three-body dispersion interactions for the rare gases, alkali, and alkaline-earth atoms

2012 ◽  
Vol 136 (10) ◽  
pp. 104104 ◽  
Author(s):  
Li-Yan Tang ◽  
Zong-Chao Yan ◽  
Ting-Yun Shi ◽  
James F. Babb ◽  
J. Mitroy
Keyword(s):  
Long Range ◽  
Alkaline Earth ◽  
Rare Gases ◽  
Dispersion Interactions ◽  
Three Body

Diffusion cross sections for potassium and levels in rare gases

1996 ◽  
Vol 29 (3) ◽  
pp. 435-448 ◽  
Author(s):  
F Yahyaei-Moayyed ◽  
A P Hickman ◽  
A D Streater
Keyword(s):  
Cross Sections ◽  
Rare Gases

Fine Structure Transition Cross Sections of Ar+and Ne+in Collisions with Rare Gases

1990 ◽  
Vol 59 (3) ◽  
pp. 898-901 ◽  
Author(s):  
Atsushi Fukuroda ◽  
Nobuo Kobayashi ◽  
Yozaburo Kaneko
Keyword(s):  
Fine Structure ◽  
Cross Sections ◽  
Rare Gases ◽  
Structure Transition

Further investigations of charge exchange and electron detachment - I. Ion energies 3 to 40 keV - II. Ion energies 100 to 4000 eV

1955 ◽  
Vol 227 (1171) ◽  
pp. 466-486 ◽  
Keyword(s):  
Charge Transfer ◽  
Energy Range ◽  
Cross Sections ◽  
Atomic Hydrogen ◽  
Molecular Hydrogen ◽  
Hydrogen Ions ◽  
Electron Detachment ◽  
Rare Gases ◽  
Helium Ions ◽  
Ion Energies

This paper describes the measurement of charge transfer cross-sections for protons, molecular hydrogen ions and helium ions in the rare gases and hydrogen, and electron detachment cross-sections for negative atomic hydrogen ions in the rare gases. Part I describes the energy range 3 to 40 keV. In part II the energy range 100 to 4000 eV is described, and the results are discussed in terms of the pseudo-adiabatic hypothesis. Comparisons are made with other experimental results, and anomalous molecular cases are discussed in terms of reactions involving anti-bonding states.

Net-ionization cross sections of rare gases by fully-stripped heavy ion impact

1997 ◽  
Vol T73 ◽  
pp. 238-239 ◽  
Author(s):  
S Makino ◽  
T Matsuo ◽  
M Mizutani ◽  
M Sano ◽  
T Kohno ◽  
...  
Keyword(s):  
Cross Sections ◽  
Heavy Ion ◽  
Rare Gases ◽  
Ionization Cross ◽  
Ion Impact ◽  
Ionization Cross Sections

scholarly journals The Effect of Attenuation from Fish Shoals on Long-Range, Wide-Area Acoustic Sensing in the Ocean

2019 ◽  
Vol 11 (21) ◽  
pp. 2464 ◽  
Author(s):  
Daniel Duane ◽  
Byunggu Cho ◽  
Ankita D. Jain ◽  
Olav Rune Godø ◽  
Nicholas C. Makris
Keyword(s):  
Remote Sensing ◽  
Long Range ◽  
Cross Sections ◽  
Electromagnetic Waves ◽  
Low Frequency ◽  
Wide Area ◽  
Line Transect ◽  
Acoustic Sensing ◽  
Underwater Acoustic ◽  
Primary Means

Acoustics is the primary means of long-range and wide-area sensing in the ocean due to the severe attenuation of electromagnetic waves in seawater. While it is known that densely packed fish groups can attenuate acoustic signals during long-range propagation in an ocean waveguide, previous experimental demonstrations have been restricted to single line transect measurements of either transmission or backscatter and have not directly investigated wide-area sensing and communication issues. Here we experimentally show with wide-area sensing over 360° in the horizontal and ranges spanning many tens of kilometers that a single large fish shoal can significantly occlude acoustic sensing over entire sectors spanning more than 30° with corresponding decreases in detection ranges by roughly an order of magnitude. Such blockages can comprise significant impediments to underwater acoustic remote sensing and surveillance of underwater vehicles, marine life and geophysical phenomena as well as underwater communication. This makes it important to understand the relevant mechanisms and accurately predict attenuation from fish in long-range underwater acoustic sensing and communication. To do so, we apply an analytical theory derived from first principles for acoustic propagation and scattering through inhomogeneities in an ocean waveguide to model propagation through fish shoals. In previous experiments, either the attenuation from fish in the shoal or the scattering cross sections of fish in the shoal were measured but not both, making it impossible to directly confirm a theoretical prediction on attenuation through the shoal. Here, both measurements have been made and they experimentally confirm the waveguide theory presented. We find experimentally and theoretically that attenuation can be significant when the sensing frequency is near the resonance frequency of the shoaling fish. Negligible attenuation was observed in previous low-frequency ocean acoustic waveguide remote sensing (OAWRS) experiments because the sensing frequency was sufficiently far from the swimbladder resonance peak of the shoaling fish or the packing densities of the fish shoals were not sufficiently high. We show that common heuristic approaches that employ free space scattering assumptions for attenuation from fish groups can lead to significant errors for applications involving long-range waveguide propagation and scattering.

Stueckelberg-Landau-Zener-(SLZ)-Modell für atomare Stoßprozesse / Stueckelberg-Landau-Zener-(SLZ) Model for Atomic Scattering Processes

1973 ◽  
Vol 28 (10) ◽  
pp. 1642-1653
Author(s):  
G.-P. Raabe
Keyword(s):  
Cross Sections ◽  
Differential Cross ◽  
Wave Functions ◽  
Differential Cross Sections ◽  
Rare Gases ◽  
Radial Wave ◽  
Atomic Scattering ◽  
The Cross

Scattering processes of atoms, molecules and ions with two crossing electronic potentials may be treated in the Stueckelberg-Landau-Zener-(SLZ) model. In this paper the WKB-solutions for the radial wave functions, given by Stueckelberg are used to calculate differential cross sections. The effects on the cross sections are explained in a semiclassical picture, following the procedures of Ford and Wheeler, and Berry. In the scattering of H+ by rare gases, some effects in the elastic cross sections are observed which can be explained by the influence of the potential of the chargeexchanged particles, using the SLZ-model. The structure in the elastic cross sections for H2+-Kr can be explained as a rainbow structure with superimposed Stueckelberg oscillations.

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