| 发明名称 |
Apparatus and methods for optical emission spectroscopy |
| 摘要 |
The invention provides a spark generator for generating a spark for optical emission spectroscopy (OES), wherein the spark has a current waveform comprising a first modulated portion which comprises a plurality of relatively high current and high gradient peaks of variable amplitude and/or inter-peak duration and a second modulated portion of relatively low current and low gradient which is substantially without modulated peaks. The spark is preferably generated from two or more programmable current sources. The invention also provides an optical emission spectrometer comprising the spark generator and a method of optical emission spectroscopy using the spark generator. |
| 申请公布号 |
US8873044(B2) |
申请公布日期 |
2014.10.28 |
| 申请号 |
US200913129785 |
申请日期 |
2009.12.04 |
| 申请人 |
Thermo Fisher Scientific (Ecublens) Sarl |
发明人 |
Vincent Francois;Sola Jean-Pierre;Wuethrich Gilbert |
| 分类号 |
G01J3/30;G01J3/443;H03K3/57 |
主分类号 |
G01J3/30 |
| 代理机构 |
|
代理人 |
Stewart Gordon |
| 主权项 |
1. A spark generator for generating a spark for optical emission spectroscopy (OES), wherein the spark is generated from two or more programmable current sources controlled by a computer and has a programmable current waveform comprising a first modulated portion which comprises a plurality of relatively high current and high gradient peaks of variable amplitude and/or inter-peak duration and a second modulated portion of relatively low current and low gradient which is substantially without modulated peaks, wherein the amplitude and/or inter-peak duration of the peaks are programmable on the computer and can be independently adjusted according to a modulation program. |
| 地址 |
Ecublens CH |
