Cation and anion electronic excitations in MgO and BaF2 crystals under excitation by photons up to 75 eV

被引：13

作者：

Kirm, M

Vielhauer, S

Zimmerer, G

Lushchik, A

Lushchik, C

机构：

[1] Univ Hamburg, Inst Expt Phys 2, D-22761 Hamburg, Germany

[2] Univ Tartu, Inst Phys, EE-51014 Tartu, Estonia

来源：

SURFACE REVIEW AND LETTERS | 2002年 / 9卷 / 02期

关键词：

D O I：

10.1142/S0218625X02003810

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The creation of primary and secondary cation excitations was investigated for MgO and BaF2 crystals using the energy- and time-resolved luminescence method. It was shown that the primary cation excitations in MgO created by photons of 50-65 eV decay with the formation of anion free excitons and electron-hole pairs. The formation of secondary cation holes by hot photoelectrons in the Ba2+ 5p shell causes the increase of cross-luminescence intensity whereas the creation of neither primary nor secondary cation excitons causes the appearance of cross-luminescence in BaF2.

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页码：1363 / 1368

页数：6

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