Low-energy electron scattering by N, P, As and Sb

Bettega, M. H. F.; Lima, Marco A. P.; Ferreira, L. G.

doi:10.1088/0953-4075/31/9/021

Cited by 9 publications

(25 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This approach is described in more details in the short review [18] (see also references therein). Below, we compare our results obtained for the +P 2 scattering with the data of work [17].…”

Section: Introductionmentioning

confidence: 81%

“…12 = 3.579 [27] and 12 = 3.578 (for the 31 P 2 isotope) [31]); for the P 3 molecule, 12 = 3.7403, 13 = 3.7148, and 23 = 7.4552. Note that work [17] contains no data on the calculated interatomic distance in the P 2 molecule.…”

Section: Structural Calculations For P 2 P 3 and P 4 Moleculesmentioning

confidence: 99%

“…A single work, where the scattering + P 2 was studied theoretically, is [17]. The cited authors applied the Schwinger multichannel method with pseudopotentials for the calculation of the cross-sections of elastic electron scattering by X 2 and XH 3 molecules (X = N, P, As, and Sb) at collision energies of 10, 15, 20, 25, and 30 eV in the static-exchange approximation.…”

Section: Introductionmentioning

confidence: 99%

“…The introduction of a pseudopotential allows one to change a real potential arising due to the combined action of the nucleus and the core electrons in every atom of the molecule. The authors of work [17] used many-particle methods, e.g., the Hartree-Fock method, for valence electrons. This approach is described in more details in the short review [18] (see also references therein).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Potential Electron Scattering by P2 and P3 Phosphorus Molecules

2016

View full text Add to dashboard Cite

Potential electron scattering by P2 and P3 phosphorus molecules at scattering energies of 0.5-30 eV has been studied theoretically for the first time. The research is carried out in the framework of the independent-atom model and using a real parameter-free relativistic optical potential for the electron interaction with atoms in the molecule. For the consistent description of the electron scattering by the atoms in the molecule, the potential parameters and the atomic characteristics are calculated in the local approximation of the stationary and time-dependent variants of the density functional theory. The comparison of the angular behavior of the differential cross-sections and the energy dependences of the integral ones in the cases of electron scattering by phosphorus molecules and phosphorus atoms testifies to their similarity. K e y w o r d s: independent-atom model, optical potential, scattering amplitude, partial phase shift, differential and total cross-sections, optical theorem.

show abstract

Section: Introductionmentioning

confidence: 81%

Section: Structural Calculations For P 2 P 3 and P 4 Moleculesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Potential Electron Scattering by P2 and P3 Phosphorus Molecules

2016

View full text Add to dashboard Cite

show abstract

“…Monnon et al [22] have measured direct ionization and dissociative ionization cross section of P 2 molecule and these are the only measured data available till date. Bettaga et al [23] have computed elastic cross section for electron scattering at low energy implementing Schwinger Multichannel Method with Pseudopotentials. Scott [24] has calculated peak of ionization cross sections of this molecule applying the binary-encounter-Bethe (BEB) method and used effective core potential.…”

Section: Atomic Phosphorusmentioning

confidence: 99%

Ionization of P Atom, P\(_2\) and PX (X = H, C, N, O) Molecules by Electron Impact: Theoretical Studies

Chaudhari¹,

Joshi²,

Pindariya³

et al. 2018

Jour. Atomic Mole. Conden. Nano Phys.

View full text Add to dashboard Cite

Being a biogenic element atomic Phosphorus is one of the significant constituents of the universe [1]. Gulick [2] found a pivotal role of phosphorus in the origin of life. The phosphoruscontaining molecules like PH, PC and PN radicals, have been observed in interstellar gas clouds [3][4][5] and they are proposed to be present under appropriate conditions. Phosphorous hydrides having numerous applications, are detected in cool stellar atmosphere [6] and circumstellar envelopes. Thus, the present paper addresses the electron impact processes of atomic phosphorus and its diatomic compounds. Ground and metastable states of Atomic P give rise to the probability of presence of metastable state in the atomic beam used for cross section measurement [7]. We have employed the well-known Spherical Complex Optical Potential (SCOP) formalism to calculate total inelastic cross sections. The semi-empirical CSP-ic method is used to extract total ionization cross section Q ion from total inelastic cross section [8]. A variant CSP-ic approach is also attempted for these targets.

show abstract

Low-energy electron scattering by H2O, H2S, H2Se, and H2Te

Varella

Bettega

Lima

et al. 1999

The Journal of Chemical Physics

View full text Add to dashboard Cite

Articles you may be interested in Dissociative recombination of H + ( H 2 O ) 3 and D + ( D 2 O ) 3 water cluster ions with electrons: Cross sections and branching ratiosWe report elastic differential, integral, and momentum transfer cross-sections for H 2 X molecules ͑X: O, S, Se, and Te͒ obtained at the static exchange level of approximation. The energy range considered was from 2 up to 30 eV for H 2 O and from 5 up to 30 eV for the other molecules. Our calculations were performed with the Schwinger multichannel method with pseudopotentials ͓M. H. F. Bettega, L. G. Ferreira, and M. A. P. Lima, Phys. Rev. A 47, 1111 ͑1993͔͒, combined with a Born closure procedure in order to account for the long-range potential due to the permanent dipole moment of the targets. Our calculated cross-sections for H 2 O and H 2 S are in good agreement with other theoretical results. Agreement with available experimental data is also encouraging. It was found that molecular size plays a crucial role in the scattering process. The influence of heavy and H atoms in the collisions is also discussed. For the integral cross-sections of the heavier molecules we also investigated incident energies below 5 eV, looking for possible shape resonances. Through the symmetry decomposition of the integral cross-sections and the eigenphase sum analysis, we found shape resonances for H 2 S, H 2 Se, and H 2 Te at the B 2 symmetry. For H 2 Te, we have also found a shape resonance at the A 2 symmetry. For all molecules a very broad structure was found at the A 1 symmetry. This is the first work to report such resonances for H 2 Se and H 2 Te.

show abstract

Low-energy electron scattering by N, P, As and Sb

Cited by 9 publications

References 21 publications

Potential Electron Scattering by P2 and P3 Phosphorus Molecules

Potential Electron Scattering by P2 and P3 Phosphorus Molecules

Ionization of P Atom, P\(_2\) and PX (X = H, C, N, O) Molecules by Electron Impact: Theoretical Studies

Low-energy electron scattering by H2O, H2S, H2Se, and H2Te

Contact Info

Product

Resources

About