ELFT HÍRADÓ

[Zoltan Mate <mate AT namafia.atomki.hu>]

Az MTA Atommagkutató Intézetének előadótermében
(Debrecen, Bem tér 18/c. 12. ép. III. em.)
2011. szeptember 20-án, KEDDEN 11:00-kor


             G. Laricchia
    (Department of Physics and Astronomy,
        University College London)

   Collisions of Positrons and Positronium
         with Atoms and Molecules


címmel előadást tart.

Az előadás előtt 10:30-tól tea.
Vendégeket szívesen látunk.


                                        Máté Zoltán

Abstract:
Recent progress in the study of positrons and positronium colliding with
atoms and molecules will be discussed. The focus will be on experimental
techniques and results, which comprise both integral and differential
cross-sections [e.g. 1-5]. Measurements for positronium formation and
direct ionization by positron impact now include cross-sections for Ps
formation in an excited state [6] and/or excitation of the residual ion
[7]. Data (integral and differential) on the scattering and fragmentation
of positronium [8, 9] will also be presented. Comparisons with theories
and other projectiles will be made where possible and future prospects
will be considered.

[1] G. Laricchia, S. Armitage, A. Koever and D.J. Murtagh Advances in
Atomic and Molecular Physics 56, 1-47 2008
[2] G. Laricchia, P.V. Reeth, M. Szluinska and J. Moxom J. Phys. B: At.,
Mol. and Opt. Phys. 35, 2525-2540 2002
[3] C. Arcidiacono, A. Koever and G. Laricchia Phys. Rev. Lett. 95,
223202--4 2005
[4] S. Armitage, D.E. Leslie, A.J. Garner, and G. Laricchia, Phys. Rev.
Lett. 89, 173402--4 2002
[5] A. Koever, D.J. Murtagh1, A.I. Williams and G. Laricchia 2010 J. 
Phys.:
Conf. Ser. 199 012020
[6] D.J. Murtagh, D.A. Cooke and G. Laricchia Phys. Rev. Lett. 102,
133202--4 2009
[7] D. A. Cooke, D. J. Murtagh and G. Laricchia Phys Rev Letts 104, 073201
2010
[8]  S.J. Brawley, S.A. Armitage, J. Beale, D.E. Leslie, A.I. Williams, G.
Laricchia, SCIENCE 330 789-789 2010
[9]  S.J. Brawley, A.I. Williams, M. Shipman, G. Laricchia,Phys Rev Lett
105    263401 2010