IDENTIFICATION AND ELIMINATION OF INTERNAL AND EXTERNAL PARASITIC MULTIPOLE COMPONENTS IN NUCLEAR MICROPROBE LENS SYSTEMS

被引：7
作者：
TAPPER, UAS
JAMIESON, DN
SWIETLICKI, E
LOVESTAM, NEG
HANSSON, T
机构：
[1] LUND INST TECHNOL,DEPT NUCL PHYS,S-22362 LUND,SWEDEN
[2] COMMISS EUROPEAN COMMUNITIES,JOINT RES CTR,CENT BUR NUCL MEASUREMENTS,B-2440 GEEL,BELGIUM
[3] UNIV MELBOURNE,SCH PHYS,PARKVILLE,VIC 3052,AUSTRALIA
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 1991年 / 62卷 / 01期
关键词：
D O I：
10.1016/0168-583X(91)95943-8
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The grid-shadow technique has proved to be an important tool for the characterization of the quadrupole lenses used for focusing the ion beam in nuclear microprobes. A technique is described which can identify and distinguish between beam aberrations, seen in the grid-shadow patterns, caused by parasitic multipoles in the lenses from those caused by stray external fields. Also presented is an on-line method to correct for the internal parasitic fields in the lenses by observing the grid-shadow patterns. thereby improving the spatial resolution in the nuclear microprobe.
引用
收藏
页码：155 / 161
页数：7
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