Publication

ROTATIONAL STATE-SELECTED VIBRATIONAL OVERTONE SPECTROSCOPY OF JET-COOLED MOLECULES

Thomas Rizzo, Oleg Boyarkine
1995
Journal Articles

Abstract

The combination of infrared-optical double resonance excitation with infrared laser assisted photofragment spectroscopy (IRLAPS) detection permits the measurement of rotationally resolved vibrational overtone spectra of jet-cooled CF3H. The IRLAPS detection technique is sufficiently selective to be able to discriminate against the dissociation of molecules in the ground state and the upsilon(CH)=1 level used as an intermediate in the double resonance scheme. The combination of this selective detection technique with both supersonic cooling and double resonance produces J state resolved overtone spectra of the 4(2) vibrational overtone band. These spectra put a limit on the homogeneous linewidths of the rovibrational transitions of approximate to 0.5 cm(-1).

Official source

https://infoscience.epfl.ch/entities/publication/223e3524-37f5-424e-91c1-de2cbea0442b

About this result

This page is automatically generated and may contain information that is not correct, complete, up-to-date, or relevant to your search query. The same applies to every other page on this website. Please make sure to verify the information with EPFL's official sources.

Graph Chat

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.

Thomas Rizzo, Oleg Boyarkine
1995
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/223e3524-37f5-424e-91c1-de2cbea0442b

About this result

Related concepts (32)

Rotational–vibrational spectroscopy

Rotational–vibrational spectroscopy is a branch of molecular spectroscopy concerned with infrared and Raman spectra of molecules in the gas phase. Transitions involving changes in both vibrational and rotational states can be abbreviated as rovibrational (or ro-vibrational) transitions. When such transitions emit or absorb photons (electromagnetic radiation), the frequency is proportional to the difference in energy levels and can be detected by certain kinds of spectroscopy.

Infrared spectroscopy

Infrared spectroscopy (IR spectroscopy or vibrational spectroscopy) is the measurement of the interaction of infrared radiation with matter by absorption, emission, or reflection. It is used to study and identify chemical substances or functional groups in solid, liquid, or gaseous forms. It can be used to characterize new materials or identify and verify known and unknown samples. The method or technique of infrared spectroscopy is conducted with an instrument called an infrared spectrometer (or spectrophotometer) which produces an infrared spectrum.

Nuclear magnetic resonance

Nuclear magnetic resonance (NMR) is a physical phenomenon in which nuclei in a strong constant magnetic field are perturbed by a weak oscillating magnetic field (in the near field) and respond by producing an electromagnetic signal with a frequency characteristic of the magnetic field at the nucleus. This process occurs near resonance, when the oscillation frequency matches the intrinsic frequency of the nuclei, which depends on the strength of the static magnetic field, the chemical environment, and the magnetic properties of the isotope involved; in practical applications with static magnetic fields up to ca.

Related publications (32)

ROTATIONAL STATE-SELECTED VIBRATIONAL OVERTONE SPECTROSCOPY OF JET-COOLED MOLECULES

Chat with Graph Search

Impact of a photoemission resonance on the measured transition timescale in solid state photoemission

Metasurface-enhanced mid-infrared imaging spectroscopy with broadband quantum cascade lasers

Correlated vibrational spectroscopy: A new window into molecular interactions