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Automatic estimation of varying continuum background emission in laser-induced breakdown spectroscopy
文献类型：期刊论文
| 作者 | Sun LX(孙兰香) ; Yu HB(于海斌)
|
| 刊名 | Spectrochimica Acta Part B: Atomic Spectroscopy
 |
| 出版日期 | 2009 |
| 卷号 | 64期号:3页码:278-287 |
| 关键词 | Laser-induced breakdown spectroscopy Background estimation Line overlaps Polynomial function Parameter optimization |
| ISSN号 | 0584-8547 |
| 产权排序 | 1 |
| 通讯作者 | 于海斌 |
| 中文摘要 | In laser-induced breakdown spectroscopy (LIBS), plasma emission is extremely unstable because of many factors, such as the fluctuation of laser energy, inhomogeneity of sample surfaces, and variable distance between lens and samples. Therefore, the detection and correction of varying continuum background emission are not easily accomplished. The aim of this work is to present a method that can automatically estimate and correct varying continuum background emission, which is representative in laser-induced plasma. In this method, we first find all minima on a spectrum, and then deduct the unreasonable minima by a proper threshold. Finally, we use one or multiple polynomial functions through the minima left to approximate the continuum backgrounds. The validity of this method was evaluated by using several spectra with different complexities and wavelength ranges. We also applied this method to optimize the measurement time delays of detectors. In addition, for five aluminum alloy samples, we compared their elemental calibration cures between original spectra and background-corrected spectra. Experimental results proved that the method proposed in this paper can well estimate varying continuum backgrounds over a wide range of wavelengths. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Spectroscopy |
| 研究领域[WOS] | Spectroscopy |
| 关键词[WOS] | KALMAN FILTER APPROACH ; SPECTROMETRY ; CALIBRATION ; SAMPLES ; PARAMETERS ; REGRESSION |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000265755600013 |
| 公开日期 | 2012-05-29 |
| 源URL | [http://ir.sia.cn/handle/173321/7065]  |
| 专题 | 沈阳自动化研究所_工业信息学研究室 |
| 推荐引用方式 GB/T 7714 | Sun LX,Yu HB. Automatic estimation of varying continuum background emission in laser-induced breakdown spectroscopy[J]. Spectrochimica Acta Part B: Atomic Spectroscopy,2009,64(3):278-287. |
| APA | Sun LX,&Yu HB.(2009).Automatic estimation of varying continuum background emission in laser-induced breakdown spectroscopy.Spectrochimica Acta Part B: Atomic Spectroscopy,64(3),278-287. |
| MLA | Sun LX,et al."Automatic estimation of varying continuum background emission in laser-induced breakdown spectroscopy".Spectrochimica Acta Part B: Atomic Spectroscopy 64.3(2009):278-287. |
入库方式： OAI收割
来源：沈阳自动化研究所
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