153 citations · 944 across the 25 of their papers we have counts for
7 papers · 1 filter
Franck-Condon spectra of unbound and imaginary-frequency vibrations via correlation functions: a branch-cut free, numerically stable derivation
P. Bryan Changala, Nadav Genossar, Joshua H. Baraban
Molecular electronic spectra can be represented in the time domain as auto-correlation functions of the initial vibrational wavepacket. We present a derivation of the harmonic vibr…
Ultra-sensitive multi-species spectroscopic breath analysis for real-time health monitoring and diagnostics
Qizhong Liang, Ya-Chu Chan, P. Bryan Changala +3
Breath analysis enables rapid, non-invasive diagnostics, as well as long-term monitoring, of human health through the identification and quantification of exhaled biomarkers. Here,…
Quantum state resolution of the C fullerene
P. Bryan Changala, Marissa L. Weichman, Kevin F. Lee +2
The remarkable physical properties of buckminsterfullerene, C, have attracted intense research activity since its original discovery. Total quantum state resolved measuremen…
Direct measurements of DOCO isomers in the kinetics of OD+CO
Thinh Q. Bui, Bryce J. Bjork, P. Bryan Changala +4
Quantitative and mechanistically-detailed kinetics of the reaction of hydroxyl radical (OH) with carbon monoxide (CO) have been a longstanding goal of contemporary chemical kinetic…
OD + CO -> D + CO2 Branching Kinetics Probed with Time-Resolved Frequency Comb Spectroscopy
Thinh Q. Bui, Bryce J. Bjork, P. Bryan Changala +3
Time-resolved direct frequency comb spectroscopy (TRFCS) was used to study the kinetics of the deuterated analogue of the OH+CO->H+CO2 reaction, which is important for atmospheric…
Ab initio effective rotational and rovibrational Hamiltonians for non-rigid systems via curvilinear second order vibrational Møller-Plesset perturbation theory
P. Bryan Changala, Joshua H. Baraban
We present a perturbative method for ab initio calculations of rotational and rovibrational effective Hamiltonians of both rigid and non-rigid molecules. Our approach is based on a…
Continuous probe of cold complex molecules with infrared frequency comb spectroscopy
Ben Spaun, P. Bryan Changala, David Patterson +4
Cavity-enhanced frequency comb spectroscopy for molecule detection in the mid-infrared powerfully combines high resolution, high sensitivity, and broad spectral coverage. However,…