Stabilization of the Spark-discharge Point on a Sample Surface by Laser Irradiation for Steel Analysis
Stabilization of the Spark-discharge Point on a Sample Surface by Laser Irradiation for Steel Analysis
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DOI：
10.2116/analsci.22.1275
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发表时间：
2006-10
影响因子：
1.6
通讯作者：
Hideyuki Matsuta;K. Kitagawa;K. Wagatsuma
中科院分区：
文献类型：
--
作者：
Hideyuki Matsuta;K. Kitagawa;K. Wagatsuma
提出了一种与激光照射相结合的分析用火花放电控制技术，其独特的特点是激光照射可以固定火花放电的发烧点。由于火花放电容易在特定的表面位置（如非金属夹杂物）开始，称为选择性放电，因此火花放电光学发射光谱法中某些元素的浓度有时会偏离其平均浓度。因此，稳定样品表面的点火点可以提高分析精度。
A combined technique with laser irradiation is suggested to control spark discharge for analytical use, having a unique feature that firing points of the spark discharge can be fixed by laser irradiation. Because the spark discharge easily initiates at particular surface sites, such as non-metallic inclusions, called selective discharge, the concentration of some elements sometimes deviates from their average one in spark discharge optical emission spectrometry. Therefore, stabilization of firing points on a sample surface could improve the analytical precision.