1. Preface

   • Béla Lévay

   EditorialNotes Pages: 253 - 253

2. Positron and positronium annihilation studies of phase behaviour in confined geometry

   • M. A. Alam
   • H. M. Fretwell
   • S. B. Dugdale

   Invited Talks Pages: 255 - 271

3. Magnetic quenching of positronium

   • G. Consolati

   Invited Talks Pages: 273 - 292

4. Some aspects of the interactions of orthopositronium with perfect and defect surfaces of insulating materials

   • C. Dauwe
   • B. Van Waeyenberge
   • J. Kuriplach

   Invited Talks Pages: 293 - 308

5. The interaction of slow positrons with organic moecules above and below positronium formation thresholds

   • L. D. Hulett Jr.
   • Jun Xu
   • D. M. Schrader

   Invited Talks Pages: 309 - 325

6. Intra-spur positronic processes

   • Y. Ito

   Invited Talks Pages: 327 - 341

7. Path integral methods of positron annihilation

   • B. N. Miller
   • T. Reese
   • H. Guo

   Invited Talks Pages: 343 - 356

8. On the role of free volume in pick-off annihilation and positronium chemical reactions

   • V. P. Shantarovich

   Invited Talks Pages: 357 - 369

9. Common features in the formation of Ps, Mu, radiolytic hydrogen and solvated electrons in aqueous solutions

   • V. M. Byakov
   • S. V. Stepanov

   Invited Talks Pages: 371 - 405

10. Microstructure and mechanical properties of polymers studied by positron annihilation

    • S. J. Wang
    • C. L. Wang
    • B. Wang

    Invited Talks Pages: 407 - 421

11. Application of positron annihilation induced Auger Electron Spectroscopy to the study of surface chemistry

    • A. H. Weiss
    • G. Yang
    • N. G. Fazleev

    Invited Talks Pages: 423 - 433

12. A sense of new beginnings in positron and positronium chemistry

    • D. M. Schrader

    Invited Talks Pages: 435 - 439

13. Positrons in benzenediols

    • T. Goworek
    • B. Jasińska
    • K. Ciesielski

    Contributed Papers Pages: 441 - 449

14. Positron diffusion in liquid metals

    • I. Kanazawa

    Contributed Papers Pages: 451 - 455

15. Chemical reactions of positronium studied by age-momentum correlation (AMOC) using a relativistic positron beam

    • P. Castellaz
    • J. Major
    • I. Billard

    Contributed Papers Pages: 457 - 467

16. Positron annihilation in polyvinylalcohol doped with CuCl₂

    • Hamdy F. M. Mohamed
    • Y. Ito
    • E. E. Abdel-Hady

    Contributed Papers Pages: 469 - 477

17. Investigation of transitions and relaxation processes in polystyrene by using positron annihilation

    • M. Ban
    • M. Kyoto
    • S. Tanigawa

    Contributed Papers Pages: 479 - 484

18. Influence of structure of a crosslinked epoxy resin on its properties studied by positron annihilation and other methods

    • M. Debowska
    • L. Kurzeja
    • J. Rudzińska-Girulska

    Contributed Papers Pages: 485 - 494

19. A positron lifetime and Doppler-broadening study of positron states and free volume in polyethylene

    • G. Dlubek
    • K. Saarinen

    Contributed Papers Pages: 495 - 503

20. Positron annihilation lifetime studies of the volume phase transition of polyacrylamides

    • K. Ito
    • Y. Ujihira
    • K. Horie

    Contributed Papers Pages: 505 - 511

21. High sensitivity of positron annihilation lifetime to time and pressure effects in gas-exposed polymers

    • Y. C. Jean
    • X. Hong
    • Hsinjin Yang

    Contributed Papers Pages: 513 - 524

22. Diffusion coefficients of positronium in polycarbonate at low temperatures

    • Y. Kobayashi
    • K. Hirata
    • K. Itoh

    Contributed Papers Pages: 525 - 531

23. Study of free volume parameters of polystyrenes of different molecular architecture by positron annihilation lifetime measurement

    • H. -L. Li
    • Y. Ujihira
    • A. Nanasawa

    Contributed Papers Pages: 533 - 541

24. Variation of free volume parameters of polyalkylmethacrylate derivatives in the range from 15 to 300 K probed by positron annihilation lifetime measurement

    • H. -L. Li
    • Y. Ujihira
    • K. Horie

    Contributed Papers Pages: 543 - 553

25. Free volume of cyanate resins studied by positron annihilation

    • T. Suzuki
    • Y. Oki
    • Y. Ito

    Contributed Papers Pages: 555 - 562

26. On the expansion of hole in main chain polymers determined by positron annihilation

    • J. Krištiak
    • O. Šauša
    • J. Bartoš

    Contributed Papers Pages: 563 - 570

27. A low cost time-energy correlation apparatus for positronium annihilation

    • B. Van Waeyenberge
    • C. Dauwe
    • D. Segers

    Contributed Papers Pages: 571 - 574

28. Anomalous freezing and melting behaviour of capillary confined CO₂

    • H. M. Fretwell
    • J. A. Duffy
    • R. Evans

    Contributed Papers Pages: 575 - 582

29. Studies of crystallization of SiO₂-glass by positron annihilation

    • C. Hugenschmidt
    • U. Holzwarth
    • K. Maier

    Contributed Papers Pages: 583 - 589

30. Pressure dependence of positron trapping rate, lifetime and defect formation in metals and alloys

    • J. Wolff
    • M. Franz
    • Th. Hehenkamp

    Contributed Papers Pages: 591 - 598

31. Vacancies in the solids of low molecular weight organic compounds observed by positron annihilation

    • Y. Ito
    • Hamdy F. M. Mohamed
    • M. Shiotani

    Contributed Papers Pages: 599 - 605

32. Inhibition and anti-inhibition effects of electron scavengers in hydrocarbons revisited

    • Y. Ito
    • Hamdy F. M. Mohamed
    • S. V. Stepanov

    Contributed Papers Pages: 607 - 615

33. Ortho-positronium lifetimes in nonspherical voids

    • B. Jasińska
    • A. E. Kozioł
    • T. Goworek

    Contributed Papers Pages: 617 - 623

34. Effect of CCl₄ on positronium formation in isooctane

    • M. F. Ferreira Marques
    • A. P. De Lima
    • G. Duplâtre

    Contributed Papers Pages: 625 - 629