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Updated: Jun 4, 2025
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Sample Preparation for Probe Electrospray Ionization Mass Spectrometry
Published on: February 19, 2020
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Preparation of a 73As source sample for application in an offline ion source
Andrew C Candia1, Georg Bollen2, Suvan Campbell3
1Facility for Rare Isotope Beams, Michigan State University, 640 South Shaw Lane, East Lansing, 48824, MI, USA; Department of Chemistry, Michigan State University, 640 South Shaw Lane, East Lansing, 48824, MI, USA.
Summary
Researchers successfully prepared a 73As source sample for the Facility for Rare Isotope Beams (FRIB), enabling a multi-day experiment. This advancement supports nuclear structure studies and astrophysics research.
Area of Science:
- Nuclear Physics
- Isotope Separation
Background:
- The Facility for Rare Isotope Beams (FRIB) requires specific source samples for generating ion beams.
- Arsenic-73 (73As) is a crucial isotope for nuclear structure and astrophysics research, frequently requested by users.
Purpose of the Study:
- To detail the preparation process for a high-purity 73As source sample.
- To enable the generation of a 73As beam for user experiments at FRIB.
Main Methods:
- Selected silver arsenate (Ag3AsO4) as the chemical form for 73As due to its suitable volatility.
- Optimized a precipitation method using stable arsenic isotopes before applying it to the 73As sample.
Main Results:
- Successfully prepared a 73As source sample containing (5.76 ± 0.37) * 10^14 atoms.
- Achieved high precipitation yields of (99.4 ± 4.5)% for the arsenic sample.
- Generated a 73As beam for a multi-day user experiment.
Conclusions:
- The developed method for preparing 73As source samples is effective for user experiments at FRIB.
- The successful generation of the 73As beam validates the chosen chemical form and preparation technique.
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