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Title: Laser absorption spectroscopy system for vaporization process characterization and control

In support of the Lawrence Livermore National Laboratory`s (LLNL`s) Uranium Atomic Vapor Laser Isotope Separation (U-AVLIS) Program, a laser atomic absorption spectroscopy (LAS) system has been developed. This multi-laser system is capable of simultaneously measuring the line densities of {sup 238}U ground and metastable states, {sup 235}U ground and metastable states, iron, and ions at up to nine locations within the separator vessel. Supporting enrichment experiments that last over one hundred hours, this laser spectroscopy system is employed to diagnose and optimize separator system performance, control the electron beam vaporizer and metal feed systems, and provide physics data for the validation of computer models. As a tool for spectroscopic research, vapor plume characterization, vapor deposition monitoring, and vaporizer development, LLNL`s LAS laboratory with its six argon-ion-pumped ring dye lasers and recently added Ti:Sapphire and external-cavity diode-lasers has capabilities far beyond the requirements of its primary mission.
Authors:
;
Publication Date:
OSTI Identifier:
10191275
Report Number(s):
UCRL-JC--114864; CONF-9309199--6
ON: DE94000308
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: Society of Photo-Optical Instrumentation Engineer`s (SPIE) international symposium on optical tools for manufacturing and advanced automation,Boston, MA (United States),7-10 Sep 1993; Other Information: PBD: 7 Sep 1993
Research Org:
Lawrence Livermore National Lab., CA (United States)
Sponsoring Org:
USDOE, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; 47 OTHER INSTRUMENTATION; 74 ATOMIC AND MOLECULAR PHYSICS; URANIUM; LASER SPECTROSCOPY; ABSORPTION SPECTROSCOPY; LASER ISOTOPE SEPARATION; PROCESS CONTROL; URANIUM 238; URANIUM 235; METASTABLE STATES; ENRICHMENT; OPTICAL SYSTEMS 050500; 440600; 664200; URANIUM ENRICHMENT; OPTICAL INSTRUMENTATION; SPECTRA OF ATOMS AND MOLECULES AND THEIR INTERACTIONS WITH PHOTONS