scholarly journals Theoretical calculation of the vib-rotational interaction potential and the scattering cross section for the Ar-H2 (D2, T2) collision system

2015 ◽  
Vol 64 (13) ◽  
pp. 133101
Author(s):  
Di Ma-Ke ◽  
Shen Guang-Xian ◽  
Zhao Yun-Qiang ◽  
Zeng Ruo-Sheng ◽  
Wang Rong-Kai
Keyword(s):  
Theoretical Calculation ◽  
Cross Section ◽  
Interaction Potential ◽  
Scattering Cross Section ◽  
Collision System ◽  
Scattering Cross ◽  
Rotational Interaction

scholarly journals Theoretical calculation of the scattering cross section for He-HF(DF,TF) collision system

2008 ◽  
Vol 57 (11) ◽  
pp. 6932
Author(s):  
Wang Rong-Kai ◽  
Shen Guang-Xian ◽  
Yu Chun-Ri ◽  
Yang Xiang-Dong
Keyword(s):  
Theoretical Calculation ◽  
Cross Section ◽  
Scattering Cross Section ◽  
Collision System ◽  
Scattering Cross

Mass Determination by Direct Measurement of Electron Scattering

1975 ◽  
Vol 33 ◽  
pp. 240-241
Author(s):  
M. K. Lamvik ◽  
A. V. Crewe
Keyword(s):  
Cross Section ◽  
Electron Scattering ◽  
Mass Density ◽  
Variable Mass ◽  
Scattering Cross Section ◽  
Mass Determination ◽  
Number Density ◽  
Cross Sectional ◽  
Thin Slice ◽  
Scattering Cross

If a molecule or atom of material has molecular weight A, the number density of such units is given by n=Nρ/A, where N is Avogadro's number and ρ is the mass density of the material. The amount of scattering from each unit can be written by assigning an imaginary cross-sectional area σ to each unit. If the current I0 is incident on a thin slice of material of thickness z and the current I remains unscattered, then the scattering cross-section σ is defined by I=IOnσz. For a specimen that is not thin, the definition must be applied to each imaginary thin slice and the result I/I0 =exp(-nσz) is obtained by integrating over the whole thickness. It is useful to separate the variable mass-thickness w=ρz from the other factors to yield I/I0 =exp(-sw), where s=Nσ/A is the scattering cross-section per unit mass.

Sign in / Sign up

Export Citation Format

Share Document