scholarly journals Theoretical study on the partial wave cross sections of vibrational and rotational excitation for the collisions of He isotope with H2

2010 ◽  
Vol 59 (3) ◽  
pp. 1689
Author(s):  
Wang Xiao-Lu ◽  
Xu Mei ◽  
Linghu Rong-Feng ◽  
Sun Ke-Bin ◽  
Yang Xiang-Dong
Keyword(s):  
Partial Wave ◽  
Cross Sections ◽  
Theoretical Study ◽  
Rotational Excitation

Observation of Partial Wave Resonances in Low-Energy O2–H2 Inelastic Collisions

Science ◽  
2013 ◽  
Vol 341 (6150) ◽  
pp. 1094-1096 ◽  
Author(s):  
Simon Chefdeville ◽  
Yulia Kalugina ◽  
Sebastiaan Y. T. van de Meerakker ◽  
Christian Naulin ◽  
François Lique ◽  
...  
Keyword(s):  
Partial Wave ◽  
Cross Sections ◽  
Ground State ◽  
Total Angular Momentum ◽  
Inelastic Collisions ◽  
Quantum Mechanical ◽  
Quantum Scattering ◽  
Rotational Excitation ◽  
Collision Processes ◽  
Theoretical Results

Partial wave resonances predicted to occur in bimolecular collision processes have proven challenging to observe experimentally. Here, we report crossed-beam experiments and quantum-scattering calculations on inelastic collisions between ground-state O2 and H2 molecules that provide state-to-state cross sections for rotational excitation of O2 (rotational state N = 1, j = 0) to O2 (N = 1, j = 1) in the vicinity of the thermodynamic threshold at 3.96 centimeter−1. The close agreement between experimental and theoretical results confirms the classically forbidden character of this collision-induced transition, which occurs exclusively in a purely quantum mechanical regime via shape and Feshbach resonances arising from partial waves with total angular momentum (J) = 2 to 4.

Theoretical study of dynamic effects on fusion cross sections for reactions S32,34,36+Pb204,206,208

2021 ◽  
Vol 104 (3) ◽  
Author(s):  
Jian-Mei Yang ◽  
Zheng-Wei Song ◽  
Wei-Juan Zhao ◽  
Bing Wang
Keyword(s):  
Cross Sections ◽  
Theoretical Study ◽  
Dynamic Effects

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

scholarly journals Resonant states 0+ of the Boron isotope 8B from the Jost-matrix analysis of the partial cross-sections

2019 ◽  
Vol 28 (10) ◽  
pp. 1950083
Author(s):  
S. A. Rakityansky ◽  
S. N. Ershov ◽  
T. J. Tshipi
Keyword(s):  
Experimental Data ◽  
Riemann Surface ◽  
Partial Wave ◽  
Coulomb Interaction ◽  
Cross Sections ◽  
Matrix Analysis ◽  
Analytic Structure ◽  
Square Root ◽  
Excitation Energies ◽  
Resonant States

The available [Formula: see text]-matrix parametrization of experimental data on the excitation functions for the elastic and inelastic [Formula: see text] scattering at the collision energies up to 3.4[Formula: see text]MeV is used to generate the corresponding partial-wave cross-sections in the states with [Formula: see text]. Thus, obtained data are fitted using the semi-analytic two-channel Jost matrix with a proper analytic structure and some adjustable parameters. Then the spectral points are sought as zeros of the Jost matrix determinant (which correspond to the [Formula: see text]-matrix poles) at complex energies. The correct analytic structure makes it possible to calculate the fitted Jost matrix on any sheet of the Riemann surface whose topology involves not only the square-root but also the logarithmic branching caused by the Coulomb interaction. In this way, two overlapping [Formula: see text] resonances at the excitation energies [Formula: see text] and [Formula: see text][Formula: see text]MeV have been found.

Isobar formalism and one-pion-exchange partial-wave cross sections inπN→ππN

1977 ◽  
Vol 16 (1) ◽  
pp. 50-61 ◽  
Author(s):  
Ronald Aaron ◽  
R. D. Amado ◽  
Richard A. Arndt ◽  
Yogesh Goradia ◽  
Doris C. Teplitz ◽  
...  
Keyword(s):  
Partial Wave ◽  
Cross Sections ◽  
Pion Exchange

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.

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