Cavity ring-down spectroscopy of radicals and radical complexes

2017 Fiscal Year Final Research Report

• Project/Area Number: 26410019
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Physical chemistry
• Research Institution: Kagoshima University
• Principal Investigator: SUMA Kohsuke 鹿児島大学, 法文教育学域教育学系, 准教授 (10506728)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Keywords: ラジカル / CRDS / 高分解能分光

Outline of Final Research Achievements

Spectra of radicals and radical complexes were searched using cavity ring-down spectroscopy coupled to a pulsed discharge slit nozzle. The apparatus was improved by introducing a new dye laser and preparing new scanning program. Although the signal to noise ratio of radicals was improved, their complexes have not been detected. Spectra of carbon chain radicals containing silicon, those have already reported were successfully observed, but new similar species have not been detected.
Fermi resonance and Coriolis resonance of the HOOO radical have been investigated. These resonance effects cannot explain the discrepancy between the theoretical rotational constants of vibronically excited states and experimental ones.

Free Research Field

物理化学