HIGH-EFFICIENCY MOLECULAR-BEAM IONIZATION DETECTOR WITH SHORT IONIZATION REGION

被引：35

作者：

KUHNKE, K ^{[1
]}

KERN, K ^{[1
]}

DAVID, R ^{[1
]}

COMSA, G ^{[1
]}

机构：

[1] FORSCHUNGSZENTRUM JULICH, FORSCHUNGSZENTRUM, INST GRENZFLACHENFORSCH & VAKUUMPHYS, D-52425 JULICH, GERMANY

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 1994年 / 65卷 / 11期

关键词：

D O I：

10.1063/1.1144523

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A mass selective electron-impact ionization detector for use in energy resolved thermal He scattering experiments is presented. The detector combines a short effective ionization region (approximately 3 mm FWHM) with a high detection efficiency of 10-5 at 2 mA electron emission. An efficiency of 10-4 at 10 mA emission current can be achieved if time resolution below 20 μs is dispensable. The design is discussed and measurements of detection efficiency and time resolution are presented. The ionizer can likewise be employed for an efficient detection of other types of atoms or molecules.

引用

页码：3458 / 3465

页数：8

共 19 条

[1]

BENNEWITZ HG, 1963, Z PHYS, V172, P1

[2] ELECTRON BOMBARDMENT MOLECULAR BEAM DETECTOR [J].