Effect of laser characteristics on thorium isotopic ratios measured by resonance ionization mass spectrometry

Journal Article · · Analytical Instrumentation (New York); (United States)

DOI:https://doi.org/10.1080/10739149308543760· OSTI ID:5860939

Tissue, B M; Olivares, J A; Loge, G W; Fearey, B L ^[1]

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1. Los Alamos National Lab., NM (United States)

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 $[sup 230]Th/[sup 232]Th isotopic ratios measured by cw RIMS using both broad-band and narrow-band lasers. We also discuss the effectiveness of frequency-stabilizing techniques, i.e., external frequency locking of a broad-band dye laser and computer-controlled frequency centering of a narrow-band Ti:sapphire laser. 26 refs., 2 figs., 1 tab.

• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5860939
• Journal Information: Analytical Instrumentation (New York); (United States), Journal Name: Analytical Instrumentation (New York); (United States) Vol. 21:1-2; ISSN ANINE6; ISSN 0743-5797
• Country of Publication: United States
• Language: English

Related Subjects

07 ISOTOPE AND RADIATION SOURCES
070204* -- Radiation Sources-- Industrial Uses
Radiometric
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400100 -- Analytical & Separations Chemistry
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ACTINIDES
ALPHA DECAY RADIOISOTOPES
CORUNDUM
ELECTROMAGNETIC RADIATION
ELEMENTS
EVEN-EVEN NUCLEI
HEAVY ION DECAY RADIOISOTOPES
HEAVY NUCLEI
ISOTOPE RATIO
ISOTOPES
LASER RADIATION
LASERS
MASS SPECTROSCOPY
METALS
MINERALS
NEON 24 DECAY RADIOISOTOPES
NUCLEI
OXIDE MINERALS
RADIATIONS
RADIOISOTOPES
RESONANCE IONIZATION MASS SPECTROSCOPY
SAPPHIRE
SOLID STATE LASERS
SPECTROSCOPY
SPONTANEOUS FISSION RADIOISOTOPES
THORIUM
THORIUM 230
THORIUM 232
THORIUM ISOTOPES
YEARS LIVING RADIOISOTOPES