Publication

Threshold and cage effect for dissociation of H2O and D2O in Ar and Kr matrices

Majed Chergui
1990
Journal Articles

Abstract

A threshold near 6.8 eV is obsd. for the dissocn. of H2O (and D2O) via the repulsive A(1B1) potential in rare gas matrixes. The threshold varies within 0.2 eV for exchange of Kr with Ar matrix, upon deuteration, and with temp. The observations are consistent with a prompt dissocn. across matrix-induced barriers of about 1.8 eV caused by the repulsive H-rare gas potentials. The increase of dissocn. efficiency above threshold and its variation with matrix and isotope substitution seen in the expts. is rationalized by the mass dependence of energy exchange fragment and matrix and the dependence of the accessible exit cone on kinetic energy. A strong increase in the dissocn. efficiency with temp. is obsd., which is different for Ar and Kr. [on SciFinder (R)]

Official source

https://infoscience.epfl.ch/entities/publication/5cc97f45-ca96-4245-b107-8b4a01374986

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
1990
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/5cc97f45-ca96-4245-b107-8b4a01374986

About this result

Related concepts (23)

Noble gas

The noble gases (historically also the inert gases; sometimes referred to as aerogens) make up a class of chemical elements with similar properties; under standard conditions, they are all odorless, colorless, monatomic gases with very low chemical reactivity. The six naturally occurring noble gases are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and the radioactive radon (Rn). Oganesson (Og) is a synthetically produced highly radioactive element.

Noble gas compound

In chemistry, noble gas compounds are chemical compounds that include an element from the noble gases, group 18 of the periodic table. Although the noble gases are generally unreactive elements, many such compounds have been observed, particularly involving the element xenon. From the standpoint of chemistry, the noble gases may be divided into two groups: the relatively reactive krypton (ionisation energy 14.0 eV), xenon (12.1 eV), and radon (10.7 eV) on one side, and the very unreactive argon (15.

Strong interaction

In nuclear physics and particle physics, the strong interaction, which is also often called the strong force or strong nuclear force, is a fundamental interaction that confines quarks into proton, neutron, and other hadron particles. The strong interaction also binds neutrons and protons to create atomic nuclei, where it is called the nuclear force. Most of the mass of a common proton or neutron is the result of the strong interaction energy; the individual quarks provide only about 1% of the mass of a proton.