TIME-RESOLVED LASER-INDUCED FLUORESCENCE OF UO22+ IN NITRIC-ACID SOLUTIONS - COMPARISON BETWEEN NITROGEN AND TRIPLED ND-YAG LASER

被引：10

作者：

MOULIN, C ^{[1
]}

DECAMBOX, P ^{[1
]}

COUSTON, L ^{[1
]}

POUYAT, D ^{[1
]}

机构：

[1] CEA, DCC, DRDD, SEMP, F-30205 BAGNOL CEZE, FRANCE

来源：

JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY | 1994年 / 31卷 / 07期

关键词：

QUANTITATIVE CHEMICAL ANALYSIS; URANIUM; URANYL ION; LASER INDUCED FLUORESCENCE; NITRIC ACID; REMOTE SENSING; FEASIBILITY STUDIES;

D O I：

10.3327/jnst.31.691

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

A comparison between nitrogen and tripled Nd-YAG laser source for Time-Resolved Laser-Induced Fluorescence (TRLIF) of uranium in nitric acid solutions in the framework of on-line feasibility has been performed. Hence, for uranium on-line monitoring with fiber optics, nitrogen laser (337 nm), most usual source in TRLIF has several drawback; poor beam quality and non negligible nitric acid absorption at 337 nm. Tripled Nd-YAG laser (355 nm) despite lower uranium absorption coefficient has several advantages: no influence of nitric acid absorption, better beam quality, better fiber transmission and solid state technology. No significant difference for fluorescence spectra and lifetimes are observed for both lasers. Limit of detection for direct determination of uranium in nitric acid by TRLIF is in the mug/l (10(-8) m) range for both lasers.

引用

页码：691 / 699

页数：9

共 23 条

[1] ABSORPTION SPECTRUM OF URANYL ION IN PERCHLORATE MEDIA .3. RESOLUTION OF ULTRAVIOLET BAND STRUCTURE - SOME CONCLUSIONS CONCERNING EXCITED STATE OF UO22+ [J].