SELECTED PUBLICATIONS IN REFEREED JOURNALS  

     “Electron and Positron Impact Ionization of Molecules” (with L.Nagy and I.Toth), Atoms Vol.12, pp.38-53, 2024

     “Post-collisional interaction effects in the electron and positron impact ionization of neutral atoms” (with C.Whelan), European Journal of Physics D, Vol.76, pp.69-78, 2022

      “Positron impact ionization of lithium, sodium and potassium atoms” (with R. Utamuratov, D. V. Fursa, I. Bray and R.P.McEachran), European Journal of Physics D, Vol.75, pp.260-265, 2021

     Few body effects in the electron and positron impact ionization of atoms” (with C.Whelan), Atoms Vol.9, pp.33-44, 2021

      “Positron impact ionization of alkali atoms”, Studia Universitatis Babes-Bolyai, Physica, Vol.65, Issue 1-2, pp.5-10, 2020

      “ Electron impact ionization of Helium, Neon and Argon at Intermediate Energies”, Physics and Astronomy International Journal, Vol.3, Issue 6, pp.230-233, 2019

     “Calculations on e+N2 ionization” (with I.Toth and L.Nagy),  Studia Universitatis Babes-Bolyai, Physica, Vol.64, Issue 1-2, pp.5-10, 2019

      “ Electron- and positron-impact ionization of inert gases” (with H.R.J.Walters, C.T.Whelan), Physical Review A, Vol.97, pp.062702, 2018

      “ DWBA double differential ionization cross sections for positron and electron impact on argon”, European Journal of Physics D, Vol 71, pp.296-298, 2017

       Triple-differential cross sections for the ionization of NH3 by positron impact. Comparison with the electron impact ionization case.” (with I.Toth and L.Nagy),  European Journal of Physics D, Vol 70, pp.170-177, 2016

      “A coincidence study of electron and positron impact ionization of Ar(3p) at 1keV ” (with H.R.J.Walters, C.T.Whelan),  European Journal of Physics D, Vol.69,  pp.235-240, 2015

     “Ionization of NH3 and CH4 by electron impact” (with I.Toth and L.Nagy), European Journal of Physics D, Vol.69, pp.2-13, 2015

      “Electron and positron induced processes. POSMOL 2013” (with P.Limao-Vieira, M.Hoshino, O.Ingolfsson, N.Mason,Y.Nagashima, and H.Tanuma), European Journal of Physics D, Vol.68, pp.1-3, 2014

      “Triple differential cross sections for the ionization of water by electron impact” (with I.Toth and L.Nagy), European Journal of Physics D, Vol.68, pp.369-376, 2014

      “ECC study in positron impact ionization in molecular hydrogen” (with N.Zohouri Haghian), European Journal of Physics D, Vol.66, pp.323-326, 2012

“DWBA study of ECC in positron impact ionization of helium”, Nuclear Instruments and Methods in Physics Research B, Vol.276, pp.30-32, 2012

“DWBA double differential ionization cross sections for positron impact on argon” (with M.Alam), European Journal of Physics D, Vol.66, pp.19-21, 2012

      “Triple differential cross sections for the ionization of water by electron and positron impact” (with I.Toth and L.Nagy), European Journal of Physics D, Vol.66, pp.21-26, 2012

       “DWBA calculation of positron impact ionization of argon” (with M.Alam), Journal of Physics: Conference Series 262, pp.012010, 2011

 “Preface:   XV International Workshop on Low Energy Positrons and Positronium Physics” (with J.W.Darewych and A.D.Stauffer),  Journal of Physics: Conference Series 199, pp.01, 2010

       “Ionization of the water molecule by electron and positron impact” (with I.Toth, V.Chis and L.Nagy), Journal of Physics: Conference Series 199, pp.012018, 2010

       “Positron Impact Ionization of Atoms and Molecules”, Nuclear Instruments and Methods in Physics Research B, Vol.267, pp.239-243, 2009

        “Distorted-wave Born approximation for the ionization of molecules by positron and electron impact” (with I.Toth, V.Chis and L.Nagy),  Nuclear Instruments and Methods in Physics Research B, Vol.267, pp.262-265, 2009

       “Electron impact ionization of diatomic molecules” (with I.Toth, V.Chis and L.Nagy), European Journal of Physics D, Vol.48, pp.351-354, 2008

        “ECC Study in Positron Impact Ionization of Helium” (with A.Benedek),  Nuclear Instruments and Methods in Physics Research B, Vol.266, pp.407-409, 2008

        “Triply differential study of positron impact ionization of H2” (with A.Benedek),  Nuclear Instruments and Methods in Physics Research B, Vol.266, pp.458-461, 2008

         “Molecular 3C Approximation for the Ionization of  H2 by Positron Impact” (with A.Benedek), Journal of Physics B, Vol.40, pp.1589-96, 2007

         “Electron Impact Ionization of He, Ne and Ar”, Physics Letters A, Vol. 365, pp.122-125, 2007

         “Screening Effects in the Ionization of Molecules by Positrons” (with I.Toth, V.Chis and L.Nagy), Physics Letters A, Vol.360, pp.131-134, 2006

        “Positron Impact Ionization of CH4” (with  V.Chis, L.Nagy and A.D.Stauffer ), Nuclear Instruments and Methods in Physics Research B, Vol.247, pp.58-60, 2006

 “Positron Impact Ionization of CO and CO2” (with  V.Chis, L.Nagy and A.D.Stauffer ), Physics Letters A, Vol.344, pp.247-52, 2005

“Positron Impact Ionization of Molecular Nitrogen” (with  V.Chis, L.Nagy and A.D.Stauffer ), Nuclear Instruments and Methods in Phys. Res. B, Vol.221, pp.21-23, 2004

“Positron Impact Ionization of Molecular Oxygen” (with  V.Chis, L.Nagy and A.D.Stauffer ), Physics Letters A, Vol.325, pp.66-69, 2004

"The Effect of Target Representation in Positron Impact Ionization of Molecular Hydrogen" (with V.Chis, L.Nagy and A.D.Stauffer), Physics Letters A, Vol.310, pp.445-50, 2003 

"Near-Threshold Ionization of Atoms and Molecules by Positron Impact" (with L.Nagy and A.D.Stauffer), Canadian Journal of Physics, Vol.81, pp.919-27, 2003

"Distorted-wave models in positron impact ionization of atoms" (with R.P.McEachran and A.D.Stauffer), Nuclear Instruments and Meth. in Phys. Res. B, Vol.192, pp.146-49, 2002 

"Positron Impact Ionization of Hydrogen and the Noble Gases" (with R.P.McEachran and A.D.Stauffer), Canadian Journal of Physics, Vol.79, pp.1231-36, 2001

"Positron Impact Ionization of Krypton and Xenon" (with R.P.McEachran and A.D.Stauffer), Canadian Journal of Physics, Vol.77, pp.769-74, 1999

"Positron Scattering from Magnesium" (with R.P.McEachran, L.A.Parcell and A.D.Stauffer), Nuclear Instruments and Methods in Physics Research B, Vol.143, pp.21-26, 1998 

"Positron-Impact Ionization of Molecular Hydrogen" (with J.Darewych and A.D.Stauffer), Journal of Physics B, Vol.30, pp.5033-41, 1997

“Positron impact ionization of He, Ne and Ar”, (with R.McEachran, A.Stauffer), Canadian Journal of Physics,  Vol.74, pp.544-547, 1996

“New calculations on e+H ionization” (with P.Acacia, M.Horbatsch, R.McEachran, A.Stauffer), Hyperfine Interactions, Vol.89, pp.95-103, 1994

 “Face recognition using perspective invariant features” (with M.S.Kamel, H.C.Shen, A.K.C.Wong, T.M.Hong), Pattern Recognition Letters, Vol.9, 1994

"System for the Recognition of Human Faces" (with M.S.Kamel, H.C.Shen, A.K.C.Wong), IBM Systems Journal, Vol.32, No.2, pp.307-320, 1993

"Positron Impact Ionization of Atomic Hydrogen" (with P.Acacia, M.Horbatsch, R.P.McEachran, A.D.Stauffer), Physics Letters A, Vol.179, pp.205-208, 1993

"Electron Impact Ionization of Helium" (with R.P. McEachran and A.D. Stauffer), Journal of Physics B, Vol.21, pp.1411- 1417, 1988

"Partitioning of the Positron-Helium Total Scattering Cross Sections" (with D. Fromme, G. Kruse, R.P.McEachran, L.A.Parcell, W. Raith, G. Sinapius, A.D. Stauffer), Journal of Physics B, Vol.20, pp.3557-3572, 1987

"Screening and Distortion Effects in Positron Impact Ionization of Helium" (with R.P.McEachran and A.D.Stauffer), Journal of Physics B, Vol.20, pp.1635-1643, 1987

"Electron-Impact Ionization of Helium-like Ions" (with L. Nagy), Physics Letters A, Vol.114, pp.13-17, 1986

“Distorted wave cross sections for electron impact ionization of the lithium-like ions” (with L. Nagy), Zeitschrift fur Physik A, Vol.321, pp.371-374, 1985

"TOPIC -- A Tokamak Plasma Impurities Code" (with T.Beu), Computer Physics Communications, Vol.36, pp.161-177, 1985

“Semiempirical model description of the low energy electron scattering from helium”, Zeitschrift fur Physik A, Vol.320, pp.579-583, 1985

"Prolate Angular Spheroidal Wave Functions" (with T. Beu), Computer Physics Communications, Vol.30, pp.187-195, 1983

"Prolate Radial Spheroidal Wave Functions" (with T. Beu), Computer Physics Communications, Vol.30, pp.177-186, 1983

"Hydrogen-Antihydrogen Interaction Potential" (with T. Beu), Physics Letters A, Vol.93, pp.223-228, 1983

"POSDIF-A Program to Compute Positron Diffusion and Annihilation in Rare  Gases", Computer Physics Communications Vol.25, pp.433-448, 1982

     "Positron Diffusion in Krypton and Xenon", Canadian Journal of Physics, Vol.60, pp.615-624, 1982

"On the Theoretical and Experimental Cross Sections for Low- Energy Positrons - Rare Gases Scattering", Journal of Physics B, Vol.14, pp.L157-L168, 1981

“Semiempirical description of the PDWBA scaled electron ionization cross sections for atoms” (with S.Koch), Zeitschrift fur Physik A, Vol.299, pp.95-96, 1981

"The Scattering of the P-Wave Positrons in Hydrogen and Helium" (with J.W. Humberston), Journal of Physics B, Vol.13, pp.4907-4923, 1980

"Positron-Neon Elastic Scattering" (with J. Dubau), Journal of Physics B, Vol.11, pp.L567-L575, 1978

"Diffusion of Positrons in Helium Gas" (with J.W. Humberston), Journal of Physics B, Vol.10, pp.239-253, 1977

"The Scattering of S-Wave Positrons by Helium" (with J.W. Humberston), Journal of Physics B, Vol.10, pp.L153-L158, 1977

"On the Shape Resonances in NO- and N2-", Chemical Physics Letters, Vol.30, pp.245-256, 1975

"The Scattering of P-Wave Positrons by Helium" (with J.W. Humberston), Journal of Physics B, Vol.8, pp.L244-L251, 1975