1. Preface

   • Wilhelm Raith
   • R. P. McEachran

   EditorialNotes Pages: XI - XI

2. Early experiments with slow positrons in atomic physics

   • T. C. Griffith

   Invited Papers Pages: 3 - 17

3. Intense low energy positron beams

   • Kelvin G. Lynn
   • Finn M. Jacobsen

   Invited Papers Pages: 19 - 29

4. Measurements of total and positronium-formation cross sections for the scattering of positrons by alkali atoms

   • C. K. Kwan
   • W. E. Kauppila
   • S. Zhou

   Invited Papers Pages: 33 - 45

5. Positron-lithium scattering with the inclusion of positronium formation

   • J. W. Humberston
   • M. S. T. Watts

   Invited Papers Pages: 47 - 55

6. Differential cross sections for elastic and inelastic positron scattering from alkali atoms

   • K. Bartschat
   • K. M. De Vries
   • A. D. Stauffer

   Invited Papers Pages: 57 - 69

7. Non-dissociative and dissociative ionization of molecules by positron impact

   • M. R. Poulsen
   • N. P. Frandsen
   • H. Knudsen

   Invited Papers Pages: 73 - 81

8. Role of final state correlations in electron and positron impact ionization of H and He

   • A. Becker
   • S. Jetzke
   • F. H. M. Faisal

   Invited Papers Pages: 83 - 93

9. New calculations on e⁺-H ionization

   • P. Acacia
   • R. I. Campeanu
   • A. D. Stauffer

   Invited Papers Pages: 95 - 103

10. Inner-shell ionization of atoms by electron, positron and photon impacts

    • S. P. Khare
    • P. Sinha
    • J. M. Wadehra

    Invited Papers Pages: 107 - 118

11. Absolute cross-section measurements of inner-shell ionization

    • Hans Schneider
    • Ingo Tobehn
    • Rainer Hippler

    Invited Papers Pages: 119 - 125

12. Differential ionization studies at forward angles

    • á. Kövér
    • G. Laricchia
    • M. Charlton

    Invited Papers Pages: 129 - 131

13. Doubly-differential ionization cross sections of positron impact on argon

    • A. Schmitt
    • U. Cerny
    • M. Weber

    Invited Papers Pages: 133 - 140

14. Evidence for resonance and absorption effects in positron-atom differential elastic scattering

    • W. E. Kauppila
    • L. Dou
    • T. S. Stein

    Invited Papers Pages: 143 - 160

15. Cross-channel coupling in positron-atom scattering

    • Mary T. McAlinden
    • Ann A. Kernoghan
    • H. R. J. Walters

    Invited Papers Pages: 161 - 194

16. Coupled-channel calculations of positron-atom scattering at intermediate energies

    • Robin N. Hewitt
    • C. J. Noble
    • B. H. Bransden

    Invited Papers Pages: 195 - 207

17. Near threshold effects in positron-atom (molecule) scattering

    • G. Laricchia
    • J. Moxom
    • W. E. Meyerhof

    Invited Papers Pages: 209 - 218

18. Results of the Bielefeld-Brookhaven e⁺-H experiment

    • M. Weber
    • A. Hofmann
    • K. G. Lynn

    Invited Papers Pages: 221 - 242

19. Positronium beam technology

    • N. Zafar
    • G. Laricchia
    • M. Charlton

    Invited Papers Pages: 243 - 249

20. Electron-cluster interactions

    • Adi A. Scheidemann
    • Vitaly V. Kresin
    • Walter D. Knight

    Invited Papers Pages: 253 - 262

21. Work functions of metal clusters

    • K. H. Meiwes-Broer

    Invited Papers Pages: 263 - 269

22. Annihilation rates of positrons on aromatic molecules

    • K. Iwata
    • R. G. Greaves
    • C. M. Surko

    Invited Papers Pages: 271 - 278

23. On a parameter-free model for treating polarisation forces in positron scattering processes

    • F. A. Gianturco
    • D. DeFazio
    • J. A. Rodriguez-Ruiz

    Invited Papers Pages: 281 - 298

24. Electronic and rotational excitation of H₂ by positron impact

    • A. S. Ghosh
    • T. Mukherjee

    Invited Papers Pages: 299 - 307

25. Differential scattering and rotational excitation in low-energy positron-hydrogen-molecule collisions

    • E. A. G. Armour
    • M. Plummer
    • I. Shimamura

    Invited Papers Pages: 309 - 317

26. Angular correlation of two-photon positron annihilation in molecular hydrogen and nitrogen

    • A. S. Ghosh
    • T. Mukherjee
    • J. W. Darewych

    Invited Papers Pages: 319 - 324

27. Spectroscopy of excited state positronium

    • Richard Ley
    • D. Hagena
    • H. Schneider

    Invited Papers Pages: 327 - 341

28. The molecular properties of the positronium negative ion

    • Jan-Michael Rost

    Invited Papers Pages: 343 - 354

29. Crossed beam measurement of binding energies of positronium compounds: A proposal

    • D. M. Schrader
    • G. Laricchia
    • T. N. Horsky

    Invited Papers Pages: 355 - 369

30. Trapped positrons for antihydrogen

    • G. Gabrielse
    • L. Haarsma
    • K. Abdullah

    Invited Papers Pages: 371 - 380

31. Scattering of low-energy positrons by the hydrogen molecular ion

    • E. A. G. Armour
    • C. P. Franklin

    Contributed Papers Pages: 383 - 387

32. Near-threshold ionization by positron impact

    • P. Ashley
    • G. Laricchia
    • M. Charlton

    Contributed Papers Pages: 389 - 394

33. Double ionisation of rare gas atoms by positron impact

    • S. Helms
    • U. Brinkmann
    • R. Hippler

    Contributed Papers Pages: 395 - 400

34. Doubly excited states of positronium negative ions

    • Y. K. Ho

    Contributed Papers Pages: 401 - 406

35. Differential cross sections for elastic scattering and positronium formation for positron collisions with Ne, Ar, Kr and Xe

    • Mary T. McAlinden
    • H. R. J. Walters

    Contributed Papers Pages: 407 - 418

36. Rotational excitation cross sections in e⁺-H ₂ ⁺ scattering

    • T. Mukherjee
    • D. Basu
    • A. S. Ghosh

    Contributed Papers Pages: 419 - 424

37. Positron annihilation in helium, argon and nitrogen liquids under an electric field

    • I. Pepe
    • D. A. L. Paul
    • R. Prieels

    Contributed Papers Pages: 425 - 434

38. Differential cross section surfaces for low energy scattering of electrons and positrons from rare gas atoms

    • David D. Reid
    • J. M. Wadehra

    Contributed Papers Pages: 435 - 444

39. A note on nuclear excitation by positron annihilation with K-shell electrons

    • Toshifumi Saigusa
    • Sakae Shimizu

    Contributed Papers Pages: 445 - 451

40. Positron impact ionization of the helium atom

    • C. Sinha
    • R. Biswas

    Contributed Papers Pages: 453 - 459

41. A check for consistency between positron-atomic hydrogen total, positronium formation, and ionization cross section measurements

    • T. S. Stein
    • W. E. Kauppila
    • S. Zhou

    Contributed Papers Pages: 461 - 467

42. Electron and positron impact excitation of hydrogen from the initially excited 2²S state to 3²S and 3²P states

    • Surbhi Verma
    • Rajesh Srivastava

    Contributed Papers Pages: 469 - 476

43. Positronium formation by electron capture from hydrogen-like ions

    • S. J. Ward
    • J. H. Macek

    Contributed Papers Pages: 477 - 482

44. Measurements of total cross sections for positrons and electrons colliding with atomic hydrogen

    • S. Zhou
    • W. E. Kauppila
    • T. S. Stein

    Contributed Papers Pages: 483 - 487

45. List of participants

    Legacy Pages: 489 - 492