DETECTION OF FINE PARTICLES IN LIQUIDS BY LASER BREAKDOWN METHOD

被引：34

作者：

FUJIMORI, H ^{[1
]}

MATSUI, T ^{[1
]}

AJIRO, T ^{[1
]}

YOKOSE, K ^{[1
]}

HSUEH, YM ^{[1
]}

IZUMI, S ^{[1
]}

机构：

[1] HITACHI LTD,NAKA WORKS,KATSUTA,IBARAKI 312,JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1992年 / 31卷 / 5A期

关键词：

LASER BREAKDOWN; LASER PLASMA; POLYSTYRENE PARTICLE; ULTRAPURE WATER; PARTICLE DETECTION; PARTICLE COUNTER;

D O I：

10.1143/JJAP.31.1514

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Basic characteristics of a particle detection method using laser breakdown were studied for a system of polystyrene standard particles dispersed in ultrapure water. The method was able to detect 0.02-mu-m particles. The detection sensitivity decreased with the particle size due to size dependence of the laser breakdown threshold. The plasma emission delay time from the laser pulse decreased with particle size (9.8+/-0.8 ns for 0.04-mu-m, 5.7+/-0.8 ns for 3.0-mu-m). The above results suggested the possibility of concentration and size measurement of fine particles in liquids by the proposed method.

引用

页码：1514 / 1518

页数：5

共 7 条

[1] LASER LIGHTNING ROD SYSTEM - THUNDERSTORM DOMESTICATION [J].