Laser

Rabi Chhantyal Pun

PhD (Ohio State University)

Postdoctoral research fellow at the University of Leeds, working on THz spectroscopy

  • Photodissociation Dynamics
  • Laser Spectroscopy and PGOPHER
  • Atmospheric Chemistry

My research in the Bristol Laser Chemistry Spectroscopy & Dynamics group is focused on the structure and reactivity of Criegee intermediates. Criegee intermediates are produced in the atmosphere following ozonolysis of alkenes. I will be using cavity ring-down spectroscopy (CRDS) to probe Criegee intermediates in the time and frequency domains. Results from this research will be used in atmospheric modelling studies, in collaboration with Prof Dudley Shallcross.

My previous work was focused on the spectroscopy of reactive intermediates important in atmospheric and combustion chemistry. I used several techniques like CRDS and laser induced fluorescence (LIF) spectroscopy in bulk and jet conditions to probe free radicals and stable molecules.

Relevant publication(s)

Detection and Characterization of Products from Photodissociation of XCH2CH2ONO (X = F, Cl, Br and OH), Rabi Chhantyal-Pun, Ming-Wei Chen, Dianping Sun, Terry A Miller, J. Phys. Chem. A, 116 12032-12040 (2012)

Measurement of the Absolute Absorption Cross Sections of the A←X Transition in the Organic Peroxy Radicals by Dual Wavelength Cavity Ring Down Spectroscopy, Dmitry Melnik, Rabi Chhantyal-Pun, Terry A Miller, J. Phys. Chem. A 114 11583-11594 (2010)

Observation of the A←X  Electronic Transition of β-Hydroxyethylperoxy Radical, Rabi Chhantyal-Pun, Neal D Kline, Phillip S Thomas, Terry A Miller, J. Phys. Chem. Lett. 1 1846-1852 (2010)