Resonance ionization of titanium: high useful yield and new autoionizing states
Abstract
The isotopic composition of titanium in meteoritic phases can be used to decipher processes such as stellar nucleosynthesis and galactic chemical evolution. In order to facilitate analyses of trace amounts of titanium in atom-limited samples, here we established a new three-step resonance ionization scheme. The scheme was developed using titanium–sapphire lasers and we show that it can be easily saturated and that it yields stable isotope measurements. Using the LION (Laser Ionization Of Neutrals) instrument we demonstrate a useful yield of 10.1% ± 1.6% when ionizing from the ground state. We determined the population of two low-lying electronic states within the ground state multiplet and show that accessing all three levels of the ground state manifold would result in an overall useful yield of ~18%. The useful yield agrees well with expectations based on prior analyses of uranium using LION. In addition, we report the energy levels of nine new autoionizing states between 56 217 cm -1 and 57 086 cm -1.
- Authors:
-
[1];
[1];
[1]
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Nuclear and Chemical Sciences Division
- Publication Date:
- Research Org.:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1489456
- Alternate Identifier(s):
- OSTI ID: 1471744
- Report Number(s):
- LLNL-JRNL-756574
Journal ID: ISSN 0267-9477; 943686
- Grant/Contract Number:
- AC52-07NA27344
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Analytical Atomic Spectrometry
- Additional Journal Information:
- Journal Volume: 33; Journal Issue: 11; Journal ID: ISSN 0267-9477
- Publisher:
- Royal Society of Chemistry
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 74 ATOMIC AND MOLECULAR PHYSICS; 47 OTHER INSTRUMENTATION
Citation Formats
Trappitsch, Reto, Savina, Michael R., and Isselhardt, Brett H. Resonance ionization of titanium: high useful yield and new autoionizing states. United States: N. p., 2018.
Web. doi:10.1039/C8JA00269J.
Trappitsch, Reto, Savina, Michael R., & Isselhardt, Brett H. Resonance ionization of titanium: high useful yield and new autoionizing states. United States. doi:10.1039/C8JA00269J.
Trappitsch, Reto, Savina, Michael R., and Isselhardt, Brett H. Thu .
"Resonance ionization of titanium: high useful yield and new autoionizing states". United States. doi:10.1039/C8JA00269J. https://www.osti.gov/servlets/purl/1489456.
@article{osti_1489456,
title = {Resonance ionization of titanium: high useful yield and new autoionizing states},
author = {Trappitsch, Reto and Savina, Michael R. and Isselhardt, Brett H.},
abstractNote = {The isotopic composition of titanium in meteoritic phases can be used to decipher processes such as stellar nucleosynthesis and galactic chemical evolution. In order to facilitate analyses of trace amounts of titanium in atom-limited samples, here we established a new three-step resonance ionization scheme. The scheme was developed using titanium–sapphire lasers and we show that it can be easily saturated and that it yields stable isotope measurements. Using the LION (Laser Ionization Of Neutrals) instrument we demonstrate a useful yield of 10.1% ± 1.6% when ionizing from the ground state. We determined the population of two low-lying electronic states within the ground state multiplet and show that accessing all three levels of the ground state manifold would result in an overall useful yield of ~18%. The useful yield agrees well with expectations based on prior analyses of uranium using LION. In addition, we report the energy levels of nine new autoionizing states between 56 217 cm-1 and 57 086 cm-1.},
doi = {10.1039/C8JA00269J},
journal = {Journal of Analytical Atomic Spectrometry},
number = 11,
volume = 33,
place = {United States},
year = {2018},
month = {9}
}
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