Electron collisions with molecular hydrogen from electronically excited states using the R-matrix method

Meltzer, Thomas; Tennyson, Jonathan

doi:10.1088/1361-6455/abc3d1

Cited by 8 publications

(5 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1 if observed the downward peak, peak was found increase more downward. This shows that with increasing the energy of incidence electron the DCS goes decrease and hence one can select the best region of scattering for different application [31].…”

Section: Dcs Laser-assisted Thermal Electronmentioning

confidence: 88%

Differential Cross Section With Volkov-Thermal Wave Function in Coulomb Potential

Dhobi,

Gupta,

Yadav

et al. 2024

Atom Indo.

View full text Add to dashboard Cite

Laser-assisted thermal electron-hydrogen atom elastic scattering was studied in the first-born approximation. The initial and final states of the projectile electron are described by the modified Volkov wavefunctions known as Volkov-Thermal wavefunctions. The laser-assisted thermal electron with energy ranges from 0.511 MeV to 4 MeV was considered to study the differential cross section (DCS) at azimuthal angles 30° and 14.7°, and laser-assisted field photon energy 1 eV to 3 eV are very weak at room temperature is around the room temperature 280 K to 300 K. The destructive interference was observed when a thermal electron absorbed a single photon from the laser field but no interference was found when a thermal electron emitted an electron to the laser field at a scattering angle . The DCS with eT scattering was found to be greater than a nonthermal electron in presence of laser field with scattering angle and incidence energy of the electron.

show abstract

Section: Dcs Laser-assisted Thermal Electronmentioning

confidence: 88%

Differential Cross Section With Volkov-Thermal Wave Function in Coulomb Potential

Dhobi,

Gupta,

Yadav

et al. 2024

Atom Indo.

View full text Add to dashboard Cite

show abstract

“…Use of augmented diffuse basis functions would lead to the need to use very extended inner regions, which leads to considerable computational complications. 44 Having a model that adequately describes the target excited states is crucial for modeling the computationally tricky Feshbach resonances. In the SA-CASSCF calculations, the choice of active space is crucial to the success of the method because the number of electrons occupying the active orbitals contributes to the accuracy of the description of the wave function.…”

Section: Computational Details a Target Modelsmentioning

confidence: 99%

Elastic and inelastic low-energy electron scattering from pyridine

Cheng

Cooper

et al. 2023

The Journal of Chemical Physics

Self Cite

View full text Add to dashboard Cite

A comprehensive investigation of elastic and inelastic electron scattering from molecular pyridine is reported using ab initio R-matrix method with the static exchange plus polarization and close-coupling approximations for incident energies up to 10 eV. The two well known low-lying 1 2B1 and 1 2A2 shape resonances as well as a 2 2B1 mixed-character resonance compares well with the theoretical and experimental results. We also detect five core-excited resonances (1 2A1, 1 2B2, 3 2B1, 2 2A2 and 4 2B1) which lie above the first electronic excitation threshold. The total elastic cross sections and momentum transfer cross sections agree reasonably with previous reference data. Comparisons of differential elastic cross sections of pyridine with those measured for benzene, pyrazine and pyrimidine show remarkable agreement at scattering angles of above 40{degree sign}, but behave differently for forward scattering below 40{degree sign} below 6 eV, due to the dominant effect of the permanent dipole moment on differential cross section in the low energy region with narrow scattering angles. Inelastic electronic excitation cross sections are presented showing the influence of core-excited resonances below the ionization threshold for the first time.

show abstract

“…The E 3 + g state is a Rydberg state; the present computational procedure only approximately characterizes this target PEC with the cc-pVQZ basis set which contains no augmented diffuse basis functions. Use of augmented basis sets leads to the need to use very extended inner regions and leads to considerable computational complications [53]. Thus, there is a need for further analysis on the parent state of the 1 2 + g Feshbach resonance.…”

Section: A N 2 − Resonancesmentioning

confidence: 99%

Electron-impact high-lying N2− resonant states

Cheng

Cooper

et al. 2022

Phys. Rev. A

Self Cite

View full text Add to dashboard Cite

Electron collisions with molecular hydrogen from electronically excited states using the R-matrix method

Abstract: Cross section data for electron impact electronic excitation of electronically excited states of H2 are computed using fixed-nuclear R-matrix calculations. Specifically, there is a focus on transitions from the quasi-metastable excited states a Σ … Show more

Cited by 8 publications

References 38 publications

Differential Cross Section With Volkov-Thermal Wave Function in Coulomb Potential

Differential Cross Section With Volkov-Thermal Wave Function in Coulomb Potential

Elastic and inelastic low-energy electron scattering from pyridine

Electron-impact high-lying N2− resonant states

Contact Info

Product

Resources

About