1. Determination of carrier density dependent lifetime and quantum efficiency in semiconductors with a photoluminescence method (application to InGaAsP/InP heterostructures)

   • J. Pietzsch
   • T. Kamiya

   OriginalPaper Pages: 91 - 102

2. Optical properties and origin of infrared light scattering centers in undoped semi-insulating GaAs crystals

   • T. Katsumata
   • H. Okada
   • T. Fukuda

   OriginalPaper Pages: 103 - 109

3. A field-assisted moderator for low-energy positron beams

   • C. D. Beling
   • R. I. Simpson
   • S. Fung

   OriginalPaper Pages: 111 - 116

4. Particle accumulation on a single wire in transverse HGMS configuration

   • M. Duschl-Maass
   • W. Maass
   • F. J. Friedlaender

   OriginalPaper Pages: 117 - 124

5. Positron-lifetime study of vacancy annealing in neutron-irradiated GaAs

   • G. Dlubek
   • R. Krause
   • J. Tittes

   OriginalPaper Pages: 125 - 127

6. Temperature dependence of AC-photoconductivity of HgI₂ crystal

   • Y. A. Mahmud
   • K. A. Wishah
   • R. N. Ahmad-Bitar

   OriginalPaper Pages: 129 - 131

7. A simple model for magnetic after-effects in magnetite at room temperature

   • J. Rivas
   • J. Iñiguez
   • E. Moreno

   OriginalPaper Pages: 133 - 137

8. Application of molecular (static) secondary ion mass spectroscopy to detection of organic molecules in amorphous titanium carbide

   • A. Kaloyeros
   • W. S. Williams

   OriginalPaper Pages: 139 - 143

9. General electrical transport properties of polycrystalline multi-layered metallic thin films

   • Chu-Xing Chen

   OriginalPaper Pages: 145 - 148

10. ESCA-studies of the structure and composition of the passive film formed on stainless steels by various immersion times in 0.1 M NaCl solution

    • S. Jin
    • A. Atrens

    OriginalPaper Pages: 149 - 165

11. Electrothermographic behaviour of corona charged cellulose acetate and the leucomalachite Green mixed system

    • A. K. Gupta
    • S. K. Sharma
    • Archana Venaik

    OriginalPaper Pages: 167 - 171

12. Forthcoming papers

    Announcement Pages: A5 - A5