EFFECT OF LASER CHARACTERISTICS ON THORIUM ISOTOPIC-RATIOS MEASURED BY RESONANCE IONIZATION MASS-SPECTROMETRY

Authors
TISSUE BM OLIVARES JA LOGE GW FEAREY BL
Citation
Bm. Tissue et al., EFFECT OF LASER CHARACTERISTICS ON THORIUM ISOTOPIC-RATIOS MEASURED BY RESONANCE IONIZATION MASS-SPECTROMETRY, Analytical instrumentation, 21(1-2), 1993, pp. 11-24
Citations number
28
Categorie Soggetti
Instument & Instrumentation","Chemistry Analytical
Journal title
Analytical instrumentation → ACNP
ISSN journal
07435797
Volume
21
Issue
1-2
Year of publication
1993
Pages
11 - 24
Database
ISI
SICI code
0743-5797(1993)21:1-2<11:EOLCOT>2.0.ZU;2-5
Abstract
We describe our development of resonance ionization mass spectrometry (RIMS) using continuous-wave lasers toward the measurement of isotopic ratios important in geochemistry and geochronology. Specifically, we compare the precision and accuracy of Th-230/Th-230 isotopic ratios me asured by cw RIMS using both broad-band and narrow-band lasers. We als o discuss the effectiveness of frequency-stabilizing techniques, i. e. , external frequency locking of a broad-band dye laser and computer-co ntrolled frequency centering of a narrow-band Ti:sapphire laser.