TY - JOUR
T1 - Optimization of the energy resolution of an ideal ESCA-type hemispherical analyzer
AU - Zouros, T. J.M.
AU - Benis, E. P.
AU - Chatzakis, I.
N1 - Funding Information:
We would like to thank Prof. George C. King for useful communications. This work was partially supported by the Division of Chemical Sciences, Geosciences and Biosciences, Office of Basic Energy Sciences, Office of Science, US Department of Energy.
PY - 2005/7
Y1 - 2005/7
N2 - The overall base resolution RB of a high throughput ideal hemispherical deflector analyzer (HDA) equipped with a zoom lens and a position sensitive detector (PSD) placed a distance h from the exit focus plane of the HDA is investigated as a function of h, pre-retardation factor F and beam angle θ0. ℜB is in general a function of the linear lens magnification |ML|o and can be minimized by choosing the optimal linear lens magnification |ML|o under the constraints of the Helmholtz-Lagrange law. Thus, the optimal resolution, ℜB(|ML|o) can be computed as an analytic function of h, F, θ0 and represents the ultimate resolution that can be attained ignoring fringing field effects. These results should be helpful in the efficient design and performance evaluation of any HDA utilizing a focusing lens and PSD as is typical for ESCA-type electron spectrometers.
AB - The overall base resolution RB of a high throughput ideal hemispherical deflector analyzer (HDA) equipped with a zoom lens and a position sensitive detector (PSD) placed a distance h from the exit focus plane of the HDA is investigated as a function of h, pre-retardation factor F and beam angle θ0. ℜB is in general a function of the linear lens magnification |ML|o and can be minimized by choosing the optimal linear lens magnification |ML|o under the constraints of the Helmholtz-Lagrange law. Thus, the optimal resolution, ℜB(|ML|o) can be computed as an analytic function of h, F, θ0 and represents the ultimate resolution that can be attained ignoring fringing field effects. These results should be helpful in the efficient design and performance evaluation of any HDA utilizing a focusing lens and PSD as is typical for ESCA-type electron spectrometers.
KW - Electron spectroscopy
KW - Energy resolution
KW - Hemispherical deflector analyzer
UR - http://www.scopus.com/inward/record.url?scp=20144370052&partnerID=8YFLogxK
U2 - 10.1016/j.nimb.2005.03.239
DO - 10.1016/j.nimb.2005.03.239
M3 - Conference article
AN - SCOPUS:20144370052
SN - 0168-583X
VL - 235
SP - 535
EP - 539
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
IS - 1-4
T2 - The Physics of Highly Charged Ions Proceedings of the Twelfth International Conference on the Physics of Highly Charged Ions (HCI-2004)
Y2 - 6 September 2004 through 11 September 2004
ER -