Analysis of the "dilemma effect" in fifth-order deflection aberration

Authors
Zhang, XB Yin, HC Lei, W Xue, KX Tong, LS
Citation
Xb. Zhang et al., Analysis of the "dilemma effect" in fifth-order deflection aberration, NUCL INST A, 427(1-2), 1999, pp. 404-407
Citations number
8
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
ISSN journal
01689002 → ACNP
Volume
427
Issue
1-2
Year of publication
1999
Pages
404 - 407
Database
ISI
SICI code
0168-9002(19990511)427:1-2<404:AOT"EI>2.0.ZU;2-N
Abstract
In this paper, the coma of the fifth-order aberration at a large deflection angle has been analyzed by using multipole field theory. The dilemma effec t exists in the comas of fifth-order aberration. The dilemma effect, whose value D-r is constant and independent of the TO-pole field, is the linear c ombination of coma aberrations. The coma of the fifth-order aberration is c orrected by adjusting the 10-pole field distribution when D-r is zero or sm all. The factors that influence the dilemma effect have been calculated and analyzed. (C) 1999 Published by Elsevier Science B.V. All rights reserved.