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February 27, 2026The Journal of Physical Chemistry A

Development of a Glow-Discharge Ion-Trap Instrument for Measuring Effective Radiative-Association Rate Coefficients

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Authors

DKDarya KisurynaSMSanjana MaheshwariSLSantiago Lorenzi

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Overview

An instrument measures ion-molecule radiative-association rates in astrophysical contexts, indicating new possibilities.

Key Points

  • The aim is to develop a novel instrument to measure radiative-association rate coefficients for ion-neutral reactions relevant to astrophysics.
  • Developed a glow-discharge ion source for stable ion currents.
  • Utilized a quadrupole mass filter for mass selection and detection.
  • Implemented a quadrupole ion trap for trapping reactants and products.
  • Studied Ag+ and O2 under pseudo-first-order conditions at room temperature.
  • Achieved the first pressure-dependent study of the Ag+ + O2 reaction.
  • Extracted a lower limit of 1 × 10-15 cm3 s-1 for the effective radiative-association rate coefficient.
  • Demonstrated capability for measuring diverse ion-neutral reactions with the instrument.

Cite This Study

Kisuryna et al. (2026) studied this question.

synapsesocial.com/papers/69a134fbed1d949a99abe6e1https://doi.org/10.1021/acs.jpca.6c00290
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