DETERMINATION OF ABSOLUTE EMISSION CROSS-SECTIONS FOR ELECTRON-IMPACT-INDUCED LINE RADIATION IN THE VACUUM-ULTRAVIOLET

被引：5

作者：

JANS, W ^{[1
]}

MOBUS, B ^{[1
]}

KUHNE, M ^{[1
]}

ULM, G ^{[1
]}

WERNER, A ^{[1
]}

SCHARTNER, KH ^{[1
]}

机构：

[1] UNIV GIESSEN,INST PHYS 1,D-35392 GIESSEN,GERMANY

来源：

APPLIED OPTICS | 1995年 / 34卷 / 19期

关键词：

ELECTRON IMPACT; FLUORESCENCE; PHOTOEMISSION CROSS SECTIONS; RADIOMETRY; SOURCES; VACUUM; ULTRAVIOLET;

D O I：

10.1364/AO.34.003671

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A method and an experimental setup have been developed for measuring absolute photoemission cross sections for electron-impact-induced line radiation in the vacuum ultraviolet (VUV). Unparalleled low uncertainties for the cross sections were achieved mainly from the use of the Berlin electron storage ring as a primary standard source in the VUV for the determination of the responsivity of the spectrometer-detector system used and from the use of a spinning rotor gauge as a secondary standard. for the determination of the target gas density. As the first result we present a photoemission cross section for the Ar II 3s3p(6) S-2(1/2)-3s(2)3p(5) P-2(3/2) transition at 91.98 nm for 2-keV electron-impact energy of 1.167 x 10(-18) cm(2) with a relative uncertainty of 4.4% (root 3 sigma value). This low uncertainty demonstrates the suitability of the setup for further cross-section measurements.

引用

页码：3671 / 3680

页数：10

共 33 条

[1] SIMPLE ULTRAVIOLET CALIBRATION SOURCE WITH REFERENCE SPECTRA AND ITS USE WITH THE GALILEO ORBITER ULTRAVIOLET SPECTROMETER [J].