In this paper we report on the first observation of the formation of negatively charged ions upon reflection from a diamond surface. Positive H2 and O2 ions are scattered at small angles of incidence from a polycrystalline diamond surface. Charge exchange is observed yielding neutral particles and negatively charged ions. The negative ion fractions in the reflected particle flux are 5.5% and 29% for hydrogen and oxygen, respectively. These high negative ion yields are maintained in a moderate vacuum environment (10-7 mbar) over weeks without further periodic reconditioning of the surface.
Description
ScienceDirect - Surface Science : Hydrogen and oxygen negative ion production by surface ionization using diamond surfaces
%0 Journal Article
%1 a0109
%A Wurz, P.
%A Schletti, R.
%A Aellig, M. R.
%D 1997
%J Surface Science
%K astronomy ibex imported physics science space thesis
%N 1
%P 56--66
%T Hydrogen and oxygen negative ion production by surface ionization using diamond surfaces
%U http://www.sciencedirect.com/science/article/B6TVX-3YCDK8V-4D/2/46246b9e5e5efc5e6263577b00a8264f
%V 373
%X In this paper we report on the first observation of the formation of negatively charged ions upon reflection from a diamond surface. Positive H2 and O2 ions are scattered at small angles of incidence from a polycrystalline diamond surface. Charge exchange is observed yielding neutral particles and negatively charged ions. The negative ion fractions in the reflected particle flux are 5.5% and 29% for hydrogen and oxygen, respectively. These high negative ion yields are maintained in a moderate vacuum environment (10-7 mbar) over weeks without further periodic reconditioning of the surface.
@article{a0109,
abstract = {In this paper we report on the first observation of the formation of negatively charged ions upon reflection from a diamond surface. Positive H2 and O2 ions are scattered at small angles of incidence from a polycrystalline diamond surface. Charge exchange is observed yielding neutral particles and negatively charged ions. The negative ion fractions in the reflected particle flux are 5.5% and 29% for hydrogen and oxygen, respectively. These high negative ion yields are maintained in a moderate vacuum environment (10-7 mbar) over weeks without further periodic reconditioning of the surface.},
added-at = {2007-07-24T20:55:41.000+0200},
author = {Wurz, P. and Schletti, R. and Aellig, M. R.},
biburl = {https://www.bibsonomy.org/bibtex/2397833599068690797027bbe25cd4111/essential.beatfinger},
description = {ScienceDirect - Surface Science : Hydrogen and oxygen negative ion production by surface ionization using diamond surfaces},
interhash = {ab43146d0bbc892fb8f41b6bc27667a7},
intrahash = {397833599068690797027bbe25cd4111},
journal = {Surface Science},
keywords = {astronomy ibex imported physics science space thesis},
month = {#feb#},
number = 1,
pages = {56--66},
timestamp = {2007-07-24T20:55:41.000+0200},
title = {Hydrogen and oxygen negative ion production by surface ionization using diamond surfaces},
url = {http://www.sciencedirect.com/science/article/B6TVX-3YCDK8V-4D/2/46246b9e5e5efc5e6263577b00a8264f},
volume = 373,
year = 1997
}