QSA influences on isotopic ratio measurements

被引：92

作者：

Slodzian, G

Hillion, F

Stadermann, FJ

Zinner, E

机构：

[1] CAMECA, F-92400 Courbevoie, France

[2] Univ Paris 11, CSNSM, F-91405 Orsay, France

[3] Washington Univ, Mc Donnell Ctr Space Sci, St Louis, MO 63130 USA

[4] Washington Univ, Dept Phys, St Louis, MO 63130 USA

来源：

APPLIED SURFACE SCIENCE | 2004年 / 231卷

关键词：

SIMS; isotopes; electron multiplier; sulfur; silicon;

D O I：

10.1016/j.apsusc.2004.03.155

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The quasi-simultaneous arrival (QSA) effect has been tested with the Carneca NanoSIMS 50. The capability of obtaining rather large values of K (ratio of secondary ions ejected per primary ions) has been used to follow the evolution of QSA over a large range of K value by changing the collection efficiency. The amplitude of the effect associated with QSA has been determined and compared to the theoretical value by using silicon and sulfur isotopic ratio measurements. QSA influence on pulse height distribution (PHD) has also been demonstrated. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：874 / 877

页数：4