Imperial College London
Alternate

Professor Juliet C Pickering

Faculty of Natural Sciences, Department of Physics

Professor of Experimental Physics
 
 
 
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Contact

 

+44 (0)20 7594 7763j.pickering Website

 
 
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Location

 

706Huxley BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Weiss:2020:1361-6595/ab82b2,
author = {Weiss, Z and Pickering, JC},
doi = {1361-6595/ab82b2},
journal = {Plasma Sources Science and Technology},
pages = {1--12},
title = {Charge transfer from doubly charged ions of transition elements in a neon glow discharge: evidence based on emission spectra},
url = {http://dx.doi.org/10.1088/1361-6595/ab82b2},
volume = {29},
year = {2020}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - An extensive study of Mn II, Fe II, Ti II, Cr II and Cu II emission spectra from a Grimm-type glow discharge in neon was performed, using the formalism of transition rate (TR) diagrams. In this method, radiative depopulation rates of individual excited levels of a species under study are established based on the emission spectrum, prospective contributions from radiative decay of higher excited levels (cascade excitation) are subtracted and the resulting net depopulation rates are plotted as function of energy of the levels involved. A peak at a particular energy in such a diagram reflects a collisional process in operation, selectively populating levels in a narrow interval around that energy. By comparing net TR diagrams of ionic spectra of the elements listed above, a common pattern was found indicating that singly charged ions of these elements are created, in addition to other mechanisms, by charge transfer between doubly charged ions of the element under study and metastable neutral neon atoms. This mechanism appears to be significant and needs to be taken into account in collisional–radiative models describing excitation and ionization of some elements in neon glow discharges.
AU  - Weiss,Z
AU  - Pickering,JC
DO  - 1361-6595/ab82b2
EP  - 12
PY  - 2020///
SN  - 0963-0252
SP  - 1
TI  - Charge transfer from doubly charged ions of transition elements in a neon glow discharge: evidence based on emission spectra
T2  - Plasma Sources Science and Technology
UR  - http://dx.doi.org/10.1088/1361-6595/ab82b2
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000535692700001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://iopscience.iop.org/article/10.1088/1361-6595/ab82b2
VL  - 29
ER  -
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