Photoelectron spectroscopy of metastable AlF− negative ion
We present the first experimental observation of the metastable AlF- negative ion. Velocity map imaging of the photoelectrons revealed that an electron is bound by 2.53 eV for AlF- with respect to the first excited state of the AlF neutral, a value much higher than the binding energies measured hitherto for metastable negative ions. Our calculations indicate this metastable state to be a 2Π state of AlF-. The flight times of ions in the present experiments indicate that these ions are long-lived with some ions surviving for such durations.
Authors
- Saroj Barik (ORCID: https://orcid.org/0000-0001-6755-5527)
- Saurav Dutta (ORCID: https://orcid.org/0000-0002-7329-7760)
- Arun Kumar Kanakati (ORCID: https://orcid.org/0000-0002-4301-9663)
- Aravind Gopalan (ORCID: https://orcid.org/0000-0003-4648-7136)
- Nihar Ranjan Behera (ORCID: https://orcid.org/0009-0003-5527-0761)
Institutions
- Indian Institute of Technology Madras (IN)
- University of Jyväskylä (FI)
Publication Details
- Journal
- The Journal of Chemical Physics
- Published
- 2025-07-14
- DOI
- https://doi.org/10.1063/5.0278243
- Primary Topic
- Advanced Chemical Physics Studies
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Department of Science and Technology, Ministry of Science and Technology, India