Detail publikačního výsledku

Influence of Saturation of Magnetic Lens Material on Fields of Deflectors and Parasitic Fields

ZLÁMAL, J.; LENCOVÁ, B.

Originální název

Influence of Saturation of Magnetic Lens Material on Fields of Deflectors and Parasitic Fields

Anglický název

Influence of Saturation of Magnetic Lens Material on Fields of Deflectors and Parasitic Fields

Druh

Článek Scopus

Originální abstrakt

In the connection with the calculation of parasitic fields of highly saturated lens in emerged the problem of calculation of the field of deflectors situated next to saturated magnetic materials. Up to date the deflection fields were studied only near rotationally symmetric materials with constant permeability. However, for the deflectors in saturated magnetic lenses the relative permeability is very inhomogeneous and near pole piece tips it is close to 1. We have therefore modified the computation of deflection fields in saturated lenses with EOD program to include the real value of permeability of magnetic materials. We can also display the distribution of permeability in the magnetic circuit of the lens to understand the changes in the field distribution in deflection or parasitic fields and to understand the saturation effects in magnetic lenses.

Anglický abstrakt

In the connection with the calculation of parasitic fields of highly saturated lens in emerged the problem of calculation of the field of deflectors situated next to saturated magnetic materials. Up to date the deflection fields were studied only near rotationally symmetric materials with constant permeability. However, for the deflectors in saturated magnetic lenses the relative permeability is very inhomogeneous and near pole piece tips it is close to 1. We have therefore modified the computation of deflection fields in saturated lenses with EOD program to include the real value of permeability of magnetic materials. We can also display the distribution of permeability in the magnetic circuit of the lens to understand the changes in the field distribution in deflection or parasitic fields and to understand the saturation effects in magnetic lenses.

Klíčová slova

Magnetic Lens; Electron Optics; EOD

Klíčová slova v angličtině

Magnetic Lens; Electron Optics; EOD

Autoři

ZLÁMAL, J.; LENCOVÁ, B.

Rok RIV

2016

Vydáno

30.06.2015

ISSN

1431-9276

Periodikum

MICROSCOPY AND MICROANALYSIS

Svazek

21

Číslo

S4

Stát

Spojené státy americké

Strany od

188

Strany do

193

Strany počet

6

BibTex

@article{BUT119196,
  author="Jakub {Zlámal} and Bohumila {Lencová}",
  title="Influence of Saturation of Magnetic Lens Material on Fields of Deflectors and Parasitic Fields",
  journal="MICROSCOPY AND MICROANALYSIS",
  year="2015",
  volume="21",
  number="S4",
  pages="188--193",
  doi="10.1017/S1431927615013355",
  issn="1431-9276"
}