Publication

Spectroscopy of the nitric oxide (NO) molecule in nitrogen and mixed nitrogen/krypton matrixes

Majed Chergui
1993
Journal Articles

Abstract

Absorption, emission and excitation spectra of NO in N2 and mixed N2/Kr matrixes at various N2 concns. have been recorded by means of tunable synchrotron radiation and ArF laser excitation. The gas-to-matrix shifts, bandwidths and Stokes shifts of the lowest Rydberg level A2S+(v=0) level increase linearly with N2 concn. The blue-shift is attributed to modifications in the bulk properties of the crystals and not to local perturbations. In emission, the fluorescence from B2P(v= 0) and the phosphorescence from a 4P(v=0) are obsd. While the former is little affected by the presence of N2, the latter is strongly broadened and red-shifted. High-resoln. scans and lifetime measurements upon laser excitation support the existence of at least two classes of NO sites. [on SciFinder (R)]

Official source

https://infoscience.epfl.ch/entities/publication/ec9e3944-a68a-42af-aff3-141065d4d96c

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.

Majed Chergui
1993
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/ec9e3944-a68a-42af-aff3-141065d4d96c

About this result

Related concepts (32)

Nitrogen

Nitrogen is the chemical element with the symbol N and atomic number 7. Nitrogen is a nonmetal and the lightest member of group 15 of the periodic table, often called the pnictogens. It is a common element in the universe, estimated at seventh in total abundance in the Milky Way and the Solar System. At standard temperature and pressure, two atoms of the element bond to form N2, a colorless and odorless diatomic gas. N2 forms about 78% of Earth's atmosphere, making it the most abundant uncombined element in air.

Absorption spectroscopy

Absorption spectroscopy refers to spectroscopic techniques that measure the absorption of electromagnetic radiation, as a function of frequency or wavelength, due to its interaction with a sample. The sample absorbs energy, i.e., photons, from the radiating field. The intensity of the absorption varies as a function of frequency, and this variation is the absorption spectrum. Absorption spectroscopy is performed across the electromagnetic spectrum.

Fluorescence spectroscopy

Fluorescence spectroscopy (also known as fluorimetry or spectrofluorometry) is a type of electromagnetic spectroscopy that analyzes fluorescence from a sample. It involves using a beam of light, usually ultraviolet light, that excites the electrons in molecules of certain compounds and causes them to emit light; typically, but not necessarily, visible light. A complementary technique is absorption spectroscopy. In the special case of single molecule fluorescence spectroscopy, intensity fluctuations from the emitted light are measured from either single fluorophores, or pairs of fluorophores.

Related publications (8)

Spectroscopy of the nitric oxide (NO) molecule in nitrogen and mixed nitrogen/krypton matrixes

Chat with Graph Search

Frequency-resolved observation of the Hanbury Brown-Twiss effect

Flexible Single-Photon Image Sensors, CMOS Circuits for Biological Sensing and Processing

Thesis plan proposal February 2011