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Dive into the research topics where W. A. Sibley is active.

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Journal of Luminescence | 1970

DEFECT LUMINESCENCE IN IRRADIATED MgO.

Y. Chen; J. L. Kolopus; W. A. Sibley

Abstract It has only recently been established that in irridiated and additively colored MgO crystals both the F+ center (an oxygen-ion vacancy with one trapped electron) and the neutral F center (an oxygen-ion vacancy with two trapped electrons) absorb light near 5.0 eV. In these crystals excitation with 5.0 eV light or X-rays produces an emission band at 3.13 eV, which can be correlated with ESR measurements of the F+ center. In neutron irradiated crystals, additional emission bands are observed which are attributed to defect cluster centers. In these crystals we find a luminescence band at 1.55 eV which is due to the effect which produces the 2.16 eV absorption band.


Physical Review | 1969

Luminescence of the F + Center in MgO

Y. Chen; J. L. Kolopus; W. A. Sibley


Physical Review | 1968

RADIATION DAMAGE IN ZnO SINGLE CRYSTALS.

W.E. Vehse; W. A. Sibley; F.J. Keller; Y. Chen


Physical Review | 1967

RADIATION DAMAGE IN MgO.

W. A. Sibley; Y. Chen


Physical Review | 1968

Color Centers in Mg F 2

W. A. Sibley; O. E. Facey


Physical Review | 1965

Influence of Lead Impurity on the Low-Temperature Color-Center Production in KC1

E. Sonder; W. A. Sibley


Physical Review | 1962

F-and M-BAND ABSORPTION IN HEAVILY GAMMA-IRRADIATED KCl

W. A. Sibley; E. Sonder


Physical Review | 1966

Effect of Simultaneous Optical Bleaching and Gamma Radiation on the Room-Temperature Colorability of KCl

J. W. Mathews; W. C. Mallard; W. A. Sibley


Physical Review | 1963

LIGHT SCATTERING IN ALKALI HALIDE SINGLE CRYSTALS

W. A. Sibley


Physical Review | 1967

THERMOLUMINESCENCE AND F-CENTER BLEACHING IN HEAVILY IRRADIATED KCl.

E. Sonder; W. A. Sibley; W.C. Mallard

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Y. Chen

Oak Ridge National Laboratory

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J. L. Kolopus

Oak Ridge National Laboratory

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E. Sonder

Oak Ridge National Laboratory

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O. E. Facey

Oak Ridge National Laboratory

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F.J. Keller

Oak Ridge National Laboratory

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W. E. Vehse

Oak Ridge National Laboratory

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W.E. Vehse

Oak Ridge National Laboratory

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