scholarly journals Theoretical calculation of integral cross sections of rotational excitation for collisions in isotopes of He atom with Na2 molecule

2010 ◽  
Vol 59 (7) ◽  
pp. 4591
Author(s):  
Li Wen-Feng ◽  
Linghu Rong-Feng ◽  
Cheng Xin-Lu ◽  
Yang Xiang-Dong
Keyword(s):  
Theoretical Calculation ◽  
Cross Sections ◽  
Rotational Excitation ◽  
He Atom

Calculations of inelastic cross sections for rotational excitation

1968 ◽  
Vol 211 (1) ◽  
pp. 35-50 ◽  
Author(s):  
W. Erlewein ◽  
M. von Seggern ◽  
J. P. Toennies
Keyword(s):  
Cross Sections ◽  
Rotational Excitation

Electronic Structure Calculations and Quantum Dynamics of Rotational Deexcitation of CNNC by He

2021 ◽  
Author(s):  
Ritika . ◽  
Sanchit Chhabra ◽  
T. J. Dhilip Kumar
Keyword(s):  
Electronic Structure ◽  
Interstellar Medium ◽  
Cross Sections ◽  
Quantum Dynamics ◽  
Electronic Structure Calculations ◽  
Rotational Transitions ◽  
Structure Calculations ◽  
He Atom

Quantum dynamics of rotational transitions of the diisocyanogen (CNNC) molecule undergoing collision with helium (He) atom occurring in the interstellar medium (ISM) has been studied. The rotational deexcitation cross sections...

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.

Seemingly Anomalous Angular Distributions in H + D2 Reactive Scattering

Science ◽  
2012 ◽  
Vol 336 (6089) ◽  
pp. 1687-1690 ◽  
Author(s):  
Justin Jankunas ◽  
Richard N. Zare ◽  
Foudhil Bouakline ◽  
Stuart C. Althorpe ◽  
Diego Herráez-Aguilar ◽  
...  
Keyword(s):  
Cross Sections ◽  
Collision Energy ◽  
Minimum Energy ◽  
Angular Distributions ◽  
Quantum Mechanical ◽  
Minimum Energy Path ◽  
Reactive Scattering ◽  
Rotational Excitation ◽  
Reaction Products ◽  
Trajectory Calculations

When a hydrogen (H) atom approaches a deuterium (D2) molecule, the minimum-energy path is for the three nuclei to line up. Consequently, nearly collinear collisions cause HD reaction products to be backscattered with low rotational excitation, whereas more glancing collisions yield sideways-scattered HD products with higher rotational excitation. Here we report that measured cross sections for the H + D2 → HD(v′ = 4, j′) + D reaction at a collision energy of 1.97 electron volts contradict this behavior. The anomalous angular distributions match closely fully quantum mechanical calculations, and for the most part quasiclassical trajectory calculations. As the energy available in product recoil is reduced, a rotational barrier to reaction cuts off contributions from glancing collisions, causing high-j′ HD products to become backward scattered.

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