Deutsch
 
Benutzerhandbuch Datenschutzhinweis Impressum Kontakt
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT

Freigegeben

Konferenzbeitrag

Fragmentation of helium in collisions with slow electrons: three- and four-body dynamics

MPG-Autoren
/persons/resource/persons30431

Dürr,  M.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30836

Najjari,  B.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30412

Dimopoulou,  C.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30419

Dorn,  A.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons31125

Ullrich,  J.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

Externe Ressourcen
Es sind keine Externen Ressourcen verfügbar
Volltexte (frei zugänglich)
Es sind keine frei zugänglichen Volltexte verfügbar
Ergänzendes Material (frei zugänglich)
Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar
Zitation

Dürr, M., Najjari, B., Dimopoulou, C., Dorn, A., & Ullrich, J. (2006). Fragmentation of helium in collisions with slow electrons: three- and four-body dynamics. In A. Lahmam-Bennani, & B. Lohmann (Eds.), IONIZATION, CORRELATION, AND POLARIZATION IN ATOMIC COLLISIONS: Proceedings of the Int. Symp. on (e,2e) Double Photoionization, and Related Topics and the Thirteenth Int. Symp. on Polarization and Correlation in Electronic and Atomic Collisions (pp. 12-17). Melville: American Institute of Physics.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0011-86B1-F
Zusammenfassung
With a multi-coincidence imaging technique (reaction microscope) the fragmentation of helium atoms by electron impact was explored at 106 eV incident energy. Kinematically complete information for both single- and double-ionization is obtained. The large acceptance achieved for low-energy electrons (E < 15 eV) covering almost the entire solid-angle allows to gain three-dimensional images of the electron emission for single-ionization with asymmetric kinematics. Strong deviations in the fully differential cross section between experimental data and a 3C-calculation appear in the non-coplanar geometry. Furthermore, for the first time differential experimental data on double-ionization of helium at the same impact energy (27 eV above the threshold) are presented. Preferred configurations of electron emission after the collision can be identified. The angular correlation reveals, that the dynamics is dominated by the mutual repulsion of the electrons.