The Electron Molecular Beams Laboratory – CEMBIA and CLUSTER-ILN Experiments

Electron induced reactions play important role in many media and environments:

    • dielectric discharges
    • plasma
    • atmosphere
    • interstellar chemistry
    • radiation chemistry
    • nanofabrication

 

Using the crossed electron/molecule and electron/cluster beams technique we measure:

    • the mass spectra of the molecules/clusters using the BALZERS quadrupol mass analyzer, coupled with a trochoidal electron monochromator
    • the relative cross sections of the ionization reactions, electron ionization and electron attachment
    • Electron impact ionization of molecules:
      • e + AB → AB+ + 2e
      • e + AB → A+ + B + 2e
    • Electron impact ionization of clusters:
      • e + (AB)m → ABm-1•AB+ + 2e
      • e + (AB)m → ABm-1•A+ + B + 2e
      • e + (AB)m → ABm-1•A + B+ + 2e
    • Dissociative electron attachment to the molecule:
      • e + AB ↔ AB*- → A– + B
    • Dissociative electron attachment to the molecule/clusters:
      • e + (AB)m ↔ ABm-1•AB*- → ABm-1•A– + B
      • e + (AB)m ↔ ABm-1•AB*- → ABm-1•A + B–
    • the appearance energies of the ions, ionization energies of molecules/clusters, threshold energies of formation of ionic fragments
    • gas temperature dependencies of the reactions

CEMBIA and CLUSTER-ILN

Fig 1.: Left is the schema of CEMBIA – Crossed Electron Molecular Beams Ionisation Apparatus, (TEM – Trochoidal Electron Monochromator, MBS – Molecular Beam Source, QMS – Quadrupole Mass Spectrometer), right is the CLUSTER-ILN – Crossed Electron Molecular Cluster Beams Ionisation Apparatus, (coexpansion of molecules in Ar gas).

 

Trochoidal Electron Monochromator of the CEMBIA and CLUSTER-ILN

Fig 2.: Trochoidal Electron Monochromator in the CEMBIA chamber (left) and of the CLUSTER-ILN setup (right).

 Ion mass spectrum of Co(CO)3NO molecule recorded at 100 eV incident electron energy.

Fig 3.: Mass spectrum of Co(CO)3NO molecule recorded at 100 eV incident electron energy.

Ion yields of DEA to C4F8 clusters.

Fig 4.: Ion yields of DEA to C4F8 clusters.

 

Collaborations:

    • Universität Innsbruck, Austria
    • Open University, United Kingdom
    • Brno University of Technology, Czech republic
    • University of Bremen, Germany
    • Belgrade University, Serbia
    • New University of Lisbon, Portugal
    • University of Iceland, Iceland
    • UFA, Russian Academy of Sciences, Russia

 

Contact:

Doc. RNDr. Peter Papp, PhD., papp@fmph.uniba.sk, 00421 2 602 95 398

Prof. Štefan Matejčík, DrSc., matejcik@fmph.uniba.sk, 00421 2 602 95 686

List of some publications:

[1] J. Lengyel, P. Papp, Š. Matejčík, J. Kočišek, M. Fárník and J. Fedor, Beilstein Journal of Nanotechnology 2017, 8, 2200-2207.

[2] J. Warneke, W. F. Van Dorp, P. Rudolf, M. Stano, P. Papp, S. Matejcik, T. Borrmann and P. Swiderek, Phys Chem Chem Phys 2015, 17, 1204-1216.

[3] M. Lacko, P. Papp, K. Wnorowski and Š. Matejčík, The European Physical Journal D 2015, 69.

[4] A. A. Alsheikh, J. Žídek, F. Krčma, P. Papp, M. Lacko and Š. Matejčík, International Journal of Mass Spectrometry 2015, 385, 1-12.

[5] P. Papp, M. Lacko, D. Mészáros, M. Stano, P. Mach and Š. Matejčík, International Journal of Mass Spectrometry 2014, 365-366, 157-162.

[6] P. Papp, Š. Matejčík, P. Mach, J. Urban, I. Paidarová and J. Horáček, Chemical Physics 2013, 418, 8-13.

[7] P. Papp, S. Engmann, M. Kučera, M. Stano, Š. Matejčík and O. Ingólfsson, International Journal of Mass Spectrometry 2013, 356, 24-32.

[8] S. Engmann, M. Stano, P. Papp, M. J. Brunger, S. Matejcik and O. Ingolfsson, J Chem Phys 2013, 138, 044305.

[9] P. Papp, P. Shchukin, J. Kocisek and S. Matejcik, J Chem Phys 2012, 137, 105101.

[10] P. Papp, P. Shchukin and S. Matejcik, J Chem Phys 2010, 132, 014301.

[11] A. R. Milosavljevic, J. Kocisek, P. Papp, D. Kubala, B. P. Marinkovic, P. Mach, J. Urban and S. Matejcik, J Chem Phys 2010, 132, 104308.

[12] J. Kocisek, P. Papp, P. Mach, Y. V. Vasil’ev, M. L. Deinzer and S. Matejcik, Journal of Physical Chemistry A 2010, 114, 1677-1683.

[13] D. Kubala, E. A. Drage, A. M. E. Al-Faydhi, J. Kočíšek, P. Papp, V. Matejčík, P. Mach, J. Urban, P. Limão-Vieira, S. V. Hoffmann, Š. Matejčík and N. J. Mason, International Journal of Mass Spectrometry 2009, 280, 169-173.

[14] P. Papp, P. Neogrady, P. Mach, J. Pittner, I. Huba and S. Wilson, Molecular Physics 2008, 106, 57-74.

[15] P. Papp, P. Mach, J. Urban and S. Matejcík, Facta universitatis – series: Physics, Chemistry and Technology 2008, 6, 127-139.

[16] P. Papp, J. Urban, S. Matejcik, M. Stano and O. Ingolfsson, J Chem Phys 2006, 125, 204301.