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Photoemission and Cathodoluminescence of Doped Lithium Tetraborate Crystals Being Developed for Neutron Detection

Published online by Cambridge University Press:  12 July 2011

Christina L. Dugan ,
Robert L. Hengehold ,
Stephen R. McHale ,
Yaroslav Losovyj ,
John W. McClory  and
James C. Petrosky
Christina L. Dugan
Affiliation:
Engineering Physics, Air Force Institute of Technology, Wright Patterson AFB, Ohio
Robert L. Hengehold
Affiliation:
Engineering Physics, Air Force Institute of Technology, Wright Patterson AFB, Ohio
Stephen R. McHale
Affiliation:
Engineering Physics, Air Force Institute of Technology, Wright Patterson AFB, Ohio
Yaroslav Losovyj
Affiliation:
Physics, University of Nebraska, Lincoln, Nebraska Center for Advanced Microstructures and Devices, Louisiana State University, Baton Rouge, Louisiana
John W. McClory
Affiliation:
Engineering Physics, Air Force Institute of Technology, Wright Patterson AFB, Ohio
James C. Petrosky
Affiliation:
Engineering Physics, Air Force Institute of Technology, Wright Patterson AFB, Ohio
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Abstract

Photoemission spectroscopy using synchrotron radiation was used to determine the energy level structure of Mn doped Li2B4O7crystals. Photoemission studies provided evidence of Mn in the bulk crystal at 47.2 eV. Valence band analysis provided the presence of surface states but no acceptor sites. Cathodoluminescence studies were also made on undoped and Mn doped Li2B4O7using various beam energies from 5 to 10 KeV at room temperature. Self trapped exciton emission states are evident in the undoped and Mn doped Li2B4O7 sample ranging in energies from 3.1 to 4.1 eV.

Keywords

luminescencephotoemissionneutron irradiation
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1341: Symposium U – Nuclear Radiation Detection Materials , 2011 , mrss11-1341-u07-10
Copyright
Copyright © Materials Research Society 2011

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References

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