Optical properties of the 127 degrees cylindrical energy analyzer used in LEIS experiments
Apstrakt
The optical properties of the 127degrees cylindrical energy analyzer used in low energy ion scattering (LEIS) experiments are studied by means of SIMION 3D version 6.0 program. The dependence of the acceptance solid angle Omega on the target plane coordinates (x,y) and the relative particle energy epsilon completely describes the optical properties of an analyzer. The Omega(x, y, epsilon) function is calculated from the computed trajectories of ions emitted from different points of the target plane. The influence of spherical aberrations to the error in the energy measurement is determined experimentally. The experimental results agree very well with the results obtained using the numerical simulations as well as, with the results obtained by means of the second order analytical approach. The optical properties are analyzed for different electrode potential configurations i.e. for different deflection voltage modes defined according to the potentials of the inner and the outer electrod...e. The applied deflection voltage mode does not change Omega(x,y,epsilon) significantly. However, there is an important influence of the deflection voltage mode to the analyzer constant due to the acceleration of ions traversing along the optical axis of the analyzer. The knowledge of Omega(x, y, epsilon) can be used to determine the dependence of the energy spectra on the optical properties of the analyzer as well as, on the primary beam profile. This is of particular interest in the analysis of LEIS spectra, because deviation of spectra caused by the optics of the analyzer can be a source of significant errors in quantitative surface composition analysis. (C) 2002 Elsevier Science B.V. All rights reserved.
Ključne reči:
ion optics / electrostatic energy analyzer / low energy ion scatteringIzvor:
Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 2002, 198, 3-4, 208-219
DOI: 10.1016/S0168-583X(02)01470-2
ISSN: 0168-583X
WoS: 000179775200009
Scopus: 2-s2.0-0036894810
Kolekcije
Institucija/grupa
VinčaTY - JOUR AU - Bundaleski, Nenad AU - Rakočević, Zlatko Lj. AU - Terzić, Ivan PY - 2002 UR - https://vinar.vin.bg.ac.rs/handle/123456789/2588 AB - The optical properties of the 127degrees cylindrical energy analyzer used in low energy ion scattering (LEIS) experiments are studied by means of SIMION 3D version 6.0 program. The dependence of the acceptance solid angle Omega on the target plane coordinates (x,y) and the relative particle energy epsilon completely describes the optical properties of an analyzer. The Omega(x, y, epsilon) function is calculated from the computed trajectories of ions emitted from different points of the target plane. The influence of spherical aberrations to the error in the energy measurement is determined experimentally. The experimental results agree very well with the results obtained using the numerical simulations as well as, with the results obtained by means of the second order analytical approach. The optical properties are analyzed for different electrode potential configurations i.e. for different deflection voltage modes defined according to the potentials of the inner and the outer electrode. The applied deflection voltage mode does not change Omega(x,y,epsilon) significantly. However, there is an important influence of the deflection voltage mode to the analyzer constant due to the acceleration of ions traversing along the optical axis of the analyzer. The knowledge of Omega(x, y, epsilon) can be used to determine the dependence of the energy spectra on the optical properties of the analyzer as well as, on the primary beam profile. This is of particular interest in the analysis of LEIS spectra, because deviation of spectra caused by the optics of the analyzer can be a source of significant errors in quantitative surface composition analysis. (C) 2002 Elsevier Science B.V. All rights reserved. T2 - Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms T1 - Optical properties of the 127 degrees cylindrical energy analyzer used in LEIS experiments VL - 198 IS - 3-4 SP - 208 EP - 219 DO - 10.1016/S0168-583X(02)01470-2 ER -
@article{ author = "Bundaleski, Nenad and Rakočević, Zlatko Lj. and Terzić, Ivan", year = "2002", abstract = "The optical properties of the 127degrees cylindrical energy analyzer used in low energy ion scattering (LEIS) experiments are studied by means of SIMION 3D version 6.0 program. The dependence of the acceptance solid angle Omega on the target plane coordinates (x,y) and the relative particle energy epsilon completely describes the optical properties of an analyzer. The Omega(x, y, epsilon) function is calculated from the computed trajectories of ions emitted from different points of the target plane. The influence of spherical aberrations to the error in the energy measurement is determined experimentally. The experimental results agree very well with the results obtained using the numerical simulations as well as, with the results obtained by means of the second order analytical approach. The optical properties are analyzed for different electrode potential configurations i.e. for different deflection voltage modes defined according to the potentials of the inner and the outer electrode. The applied deflection voltage mode does not change Omega(x,y,epsilon) significantly. However, there is an important influence of the deflection voltage mode to the analyzer constant due to the acceleration of ions traversing along the optical axis of the analyzer. The knowledge of Omega(x, y, epsilon) can be used to determine the dependence of the energy spectra on the optical properties of the analyzer as well as, on the primary beam profile. This is of particular interest in the analysis of LEIS spectra, because deviation of spectra caused by the optics of the analyzer can be a source of significant errors in quantitative surface composition analysis. (C) 2002 Elsevier Science B.V. All rights reserved.", journal = "Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms", title = "Optical properties of the 127 degrees cylindrical energy analyzer used in LEIS experiments", volume = "198", number = "3-4", pages = "208-219", doi = "10.1016/S0168-583X(02)01470-2" }
Bundaleski, N., Rakočević, Z. Lj.,& Terzić, I.. (2002). Optical properties of the 127 degrees cylindrical energy analyzer used in LEIS experiments. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 198(3-4), 208-219. https://doi.org/10.1016/S0168-583X(02)01470-2
Bundaleski N, Rakočević ZL, Terzić I. Optical properties of the 127 degrees cylindrical energy analyzer used in LEIS experiments. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms. 2002;198(3-4):208-219. doi:10.1016/S0168-583X(02)01470-2 .
Bundaleski, Nenad, Rakočević, Zlatko Lj., Terzić, Ivan, "Optical properties of the 127 degrees cylindrical energy analyzer used in LEIS experiments" in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 198, no. 3-4 (2002):208-219, https://doi.org/10.1016/S0168-583X(02)01470-2 . .