TY - JOUR
T1 - Electron scattering cross section data for tungsten and beryllium atoms from 0.1 to 5000 eV
AU - Blanco, F.
AU - Silva, F. Ferreira da
AU - Limao-Vieira, P.
AU - Garcia, G.
N1 - FFS acknowledges the Portuguese National Funding Agency FCT-MCTES through researcher position IF-FCT IF/00380/2014 and together with PLV the research grant UID/FIS/00068/2013. GG acknowledges partial financial support from the Spanish Ministerio de Economia, Industria y Competitividad (Project No. FIS2016-80440). We acknowledge Professors K Bartschat and O Zatsarinny for providing their results in numerical tables and helpful related information.
PY - 2017/7/18
Y1 - 2017/7/18
N2 - We report integral cross sections for electron interactions with tungsten and beryllium atoms in the incident electron energy range from 0.1 up to 5000 eV. The calculated cross sections are obtained for electron-atom scattering processes represented by a complex potential. For tungsten, ionization cross sections are discussed in the electron energy region from threshold up to 5000 eV against the available data from the Deutsch-Mark formalism and a semi-empirical complex scattering potential. Although a reasonable agreement for the ionization cross sections has been found in the overlapping energy region, inconsistencies on the integral inelastic cross sections from the previous semi-empirical approach based on a complex scattering potential ionization contribution, are now amended and comprehensively explained. For beryllium atoms an excellent agreement with previous 'state-of-the-art' scattering theory calculations has been found for the integral elastic cross sections. However, the partial contribution of the excitation and ionization channels to the inelastic part shows serious discrepancies which deserve further investigations. Calculated elastic differential cross sections for tungsten are also reported from 0.1 to 5000 eV for scattering angles from 0° to 180°. The present set of cross sectional data may be of relevance for the plasma fusion community.
AB - We report integral cross sections for electron interactions with tungsten and beryllium atoms in the incident electron energy range from 0.1 up to 5000 eV. The calculated cross sections are obtained for electron-atom scattering processes represented by a complex potential. For tungsten, ionization cross sections are discussed in the electron energy region from threshold up to 5000 eV against the available data from the Deutsch-Mark formalism and a semi-empirical complex scattering potential. Although a reasonable agreement for the ionization cross sections has been found in the overlapping energy region, inconsistencies on the integral inelastic cross sections from the previous semi-empirical approach based on a complex scattering potential ionization contribution, are now amended and comprehensively explained. For beryllium atoms an excellent agreement with previous 'state-of-the-art' scattering theory calculations has been found for the integral elastic cross sections. However, the partial contribution of the excitation and ionization channels to the inelastic part shows serious discrepancies which deserve further investigations. Calculated elastic differential cross sections for tungsten are also reported from 0.1 to 5000 eV for scattering angles from 0° to 180°. The present set of cross sectional data may be of relevance for the plasma fusion community.
KW - atomic data for fusion
KW - electron scattering cross sections
KW - electron-atom collision data
UR - http://www.scopus.com/inward/record.url?scp=85026752958&partnerID=8YFLogxK
U2 - 10.1088/1361-6595/aa7b02
DO - 10.1088/1361-6595/aa7b02
M3 - Article
VL - 26
JO - Plasma Sources Science & Technology
JF - Plasma Sources Science & Technology
SN - 0963-0252
IS - 8
M1 - 085004
ER -