O. A. Krohn
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View article: Utilizing Quantum Cascade Lasers for Ultranarrow Velocity Resolution and Quantum-State Selectivity in Molecular Beam Scattering and Spectroscopy
Utilizing Quantum Cascade Lasers for Ultranarrow Velocity Resolution and Quantum-State Selectivity in Molecular Beam Scattering and Spectroscopy Open
We demonstrate the capability of a narrow linewidth quantum cascade laser (QCL) to selectively excite a very narrow velocity range of nitric oxide (σ ≤ 7(3) m/s) with a pure ro-vibrational quantum state. By implementing a counter-propagati…
View article: To form or not to form a reaction complex: exploring ion–molecule reactions between C<sub>3</sub>H<sub>4</sub> isomers and Xe<sup>+</sup> and O<sub>2</sub><sup>+</sup>
To form or not to form a reaction complex: exploring ion–molecule reactions between C<sub>3</sub>H<sub>4</sub> isomers and Xe<sup>+</sup> and O<sub>2</sub><sup>+</sup> Open
Ion–molecule reactions are an essential contributor to the chemistry of a diverse range of environments. Here we study the effects of isomeric structure and ionic character on the ion–molecule reaction between C 3 H 4 isomers and Xe + and …
View article: Reactions of Acetonitrile with Trapped, Translationally Cold Acetylene Cations
Reactions of Acetonitrile with Trapped, Translationally Cold Acetylene Cations Open
The reaction of the acetylene cation (C2H2+) with acetonitrile (CH3CN) is measured in a linear Paul ion trap coupled to a time-of-flight mass spectrometer. C2H2+ and CH3CN are both noted for their astrochemical abundance and predicted rele…
View article: Positive and negative signal and line shape in stimulated Raman spectroscopy: Resonance femtosecond Raman spectra of diphenylbutadiene
Positive and negative signal and line shape in stimulated Raman spectroscopy: Resonance femtosecond Raman spectra of diphenylbutadiene Open
Resonance stimulated Raman signal and line shape are evaluated analytically under common electronic/vibrational dephasing and exponential Raman/probe pulse, exp(−|t|/τ). Generally, the signal from a particular state includes contributions …
View article: Isotope-specific reactions of acetonitrile (CH3CN) with trapped, translationally cold CCl+
Isotope-specific reactions of acetonitrile (CH3CN) with trapped, translationally cold CCl+ Open
The gas-phase reaction of CCl+ with acetonitrile (CH3CN) is studied using a linear Paul ion trap coupled to a time-of-flight mass spectrometer. This work builds on a previous study of the reaction of CCl+ with acetylene [K. J. Catani et al…