Momentum transfer cross sections

2005 ◽  
pp. 35-55 ◽  
Author(s):  
S. J. Buckman ◽  
M. T. Elford
Keyword(s):  
Momentum Transfer ◽  
Cross Sections

scholarly journals The Cross Section for the J = 0 → 2 Rotational Excitation of Hydrogen by Slow Electrons

1969 ◽  
Vol 22 (6) ◽  
pp. 715 ◽  
Author(s):  
RW Crompton ◽  
DK Gibson ◽  
AI McIntosh
Keyword(s):  
Momentum Transfer ◽  
Cross Section ◽  
Cross Sections ◽  
Vibrational Excitation ◽  
The Cross ◽  
Excitation Processes ◽  
Slow Electrons ◽  
And Diffusion ◽  
Momentum Transfer Cross Section ◽  
Section Analysis

The results of electron drift and diffusion measurements in parahydrogen have been analysed to determine the cross sections for momentum transfer and for rotational and vibrational excitation. The limited number of possible excitation processes in parahydrogen and the wide separation of the thresholds for these processes make it possible to determine uniquely the J = 0 → 2 rotational cross section from threshold to 0.3 eV. In addition, the momentum transfer cross section has been determined for energies less than 2 eV and it is shown that, near threshold, a vibrational cross section compatible with the data must lie within relatively narrow limits. The problems of uniqueness and accuracy inherent in the swarm method of cross section analysis are discussed. The present results are compared with other recent theoretical and experimental determinations; the agreement with the most recent calculations of Henry and Lane is excellent.

Pseudopotential calculations of elastic scattering of electrons by helium atoms in the range 0–20 eV

1990 ◽  
Vol 68 (1) ◽  
pp. 104-110 ◽  
Author(s):  
B. Plenkiewicz ◽  
P. Plenkiewicz ◽  
J.-P. Jay-Gerin
Keyword(s):  
Experimental Data ◽  
Elastic Scattering ◽  
Momentum Transfer ◽  
Cross Sections ◽  
Theoretical Calculations ◽  
Incident Electron ◽  
Elastic Electron ◽  
Scattering System ◽  
Helium Atoms ◽  
Pseudopotential Calculations

Our earlier pseudopotential calculations on electrons colliding with argon and krypton are extended to consider the elastic electron–helium scattering system. In this paper, we present detailed results for phase shifts, differential, total, and momentum-transfer cross sections for this system for incident electron energies in the range from 0 to 20 eV. These agree very well with existing experimental data and with other theoretical calculations.

A local collision probability approximation for predicting momentum transfer cross sections

The Analyst ◽  
2015 ◽  
Vol 140 (20) ◽  
pp. 6804-6813 ◽  
Author(s):  
Christian Bleiholder
Keyword(s):  
Momentum Transfer ◽  
Cross Sections ◽  
Ion Mobility ◽  
Collision Probability

The local collision probability approximation (LCPA) method is introduced to compute molecular momentum transfer cross sections for comparison to ion mobility experiments.

Electron scattering from germanium tetrafluoride

RSC Advances ◽  
2014 ◽  
Vol 4 (109) ◽  
pp. 63817-63823 ◽  
Author(s):  
Biplab Goswami ◽  
Rahla Naghma ◽  
Bobby Antony
Keyword(s):  
Momentum Transfer ◽  
Electron Scattering ◽  
Cross Sections ◽  
Differential Cross ◽  
Shape Resonance ◽  
Differential Cross Sections ◽  
Rotational Excitation ◽  
R Matrix ◽  
High Energies ◽  
Germanium Tetrafluoride

R-matrix and SCOP methods are used at low and high energies respectively to find e-GeF4 TCS. Electronic and rotational excitation, momentum transfer and elastic differential cross sections are also calculated. A shape resonance is observed at 5.7 eV.

Correcting the fundamental ion mobility equation for field effects

The Analyst ◽  
2016 ◽  
Vol 141 (23) ◽  
pp. 6396-6407 ◽  
Author(s):  
William F. Siems ◽  
Larry A. Viehland ◽  
Herbert H. Hill
Keyword(s):  
Momentum Transfer ◽  
Ion Mobility Spectrometry ◽  
Cross Sections ◽  
Ion Mobility ◽  
Collision Frequency ◽  
Field Effects

Cross sections measured by ion mobility spectrometry are corrected for collision frequency and cooling/heating-controlled momentum transfer.

On the Production of Hypernuclei Using Fast Kaons

1973 ◽  
Vol 51 (14) ◽  
pp. 1524-1533 ◽  
Author(s):  
Robert James Esch
Keyword(s):  
Wave Function ◽  
Mass Spectrum ◽  
Momentum Transfer ◽  
Cross Sections ◽  
Differential Cross ◽  
Interaction Model ◽  
Impulse Approximation ◽  
Direct Interaction ◽  
Single Scattering ◽  
Nuclear Targets

The differential cross sections for the production of definite lambda hypernuclear states are calculated for the reaction n(K−, π−)Λ° on nuclear targets of helium, carbon, and oxygen at incident momenta from 500 to 800 MeV/c. A direct interaction model is used, employing the single scattering, impulse approximation. It is shown that these predictions are very sensitive to the three-momentum transfer and to the wave function of the bound lambda in the hypernucleus. Possible experimental consequences are discussed concerning the observation of hypernucleus production by studying the missing mass spectrum of the emitted pion.

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