Találati lista | Tudóstér

001-es BibID:	BIBFORM131518
035-os BibID:	(WoS)001447534300008 (Scopus)86000334465
Első szerző:	Gulyás László (fizikus)
Cím:	One- and two-center effects in single ionization in high-energy collisions of protons and hydrogen molecules / L. Gulyás, S. Egri, T. Kirchner
Dátum:	2025
ISSN:	2469-9926 2469-9934
Megjegyzések:	Doubly differential and total cross sections for single ionization in H+?H2 collisions are evaluated in the continuum distorted wave with eikonal initial state model. One- and two-center models are used to represent the target molecule. In the two-center model, the initial orbitals are represented by Hartree-Fock (HF) or density functional methods, while the continuum wave function of the ejected electron is determined on the spherically averaged model potential derived from the ground-state configuration. In the one-center description of the H2 molecule, both the initial and final orbitals are represented on the same potential. Cross sections evaluated with the HF description of the target are generally in good agreement with both experimental data and available theoretical calculations. Models describing the motion of the ejected electron in a potential field derived from a two-center description of the molecule underestimate the electron yield at backward emission angles. The inadequacy of these applications is related to the scattering of the electron by the target nucleus, which is more realistically considered in a calculation based on a one-center description of the molecule.
Tárgyszavak:	Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk high energy collision proton hydrogen
Megjelenés:	Physical Review A. - 111 : 3 (2025), p. 032805-032818. -
További szerzők:	Egri Sándor (1966-) (fizikus) Kirchner, Tom
Pályázati támogatás:	K 151196 OTKA
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Saját polcon:

001-es BibID:	BIBFORM085022
Első szerző:	Gulyás László
Cím:	Differential cross sections for single ionization of Li in collisions with fast protons and O8+ ions / Gulyás László, Egri Sándor, Tom Kirchner
Dátum:	2014
ISSN:	1050-2947 2469-9934
Megjegyzések:	We study the process of single ionization of Li in collisions with H+ and O8+ projectile ions at 6-MeV and 1.5-MeV/amu impact energies, respectively. Using the frameworks of the independent-electron model and the impact parameter picture, fully (FDCS) and doubly (DDCS) differential cross sections are evaluated in the continuum distorted wave with eikonal initial-state approximation. Comparisons are made with the recent measurements of LaForge et al. [J. Phys. B 46, 031001 (2013)] for the DDCS and Hubele et al. [Phys. Rev. Lett. 110, 133201 (2013)] for the FDCS, respectively. For O8+ impact inclusion of the heavy particle [nucleus-nucleus (NN)] interaction in the calculations is crucial and effects of polarization due to the presence of the projectile ion have also to be taken into account for getting very good agreement with the measured data. Our calculation reproduces the satellite peak structure seen in the FDCS for the Li(2s) measurement, which we explain as being formed by a combination of the binary and NN interactions.
Tárgyszavak:	Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Physical Review A. - 90 : 6 (2014), p. 1-10. -
További szerzők:	Egri Sándor (1966-) (fizikus) Kirchner, Tom
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Saját polcon: