Auger decay of 1{sigma}{sub g} and 1{sigma}{sub u} hole states of the N{sub 2} molecule. II. Young-type interference of Auger electrons and its dependence on internuclear distance

Journal Article · Sun Aug 15 00:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.023420· OSTI ID:21448537

Cherepkov, N A ^[1]; Semenov, S K ^[1]; Schoeffler, M S; Titze, J; Petridis, N; Jahnke, T; Cole, K; Schmidt, L Ph. H.; Czasch, A; Jagutzki, O; Schmidt-Boecking, H; Doerner, R ^[2]; Akoury, D ^[2]; Williams, J B; Landers, A L ^[3]; Osipov, T; Lee, S; Prior, M H; Belkacem, A; Weber, Th ^[4]

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1. State University of Aerospace Instrumentation, 190000 St. Petersburg (Russian Federation)
2. Institut fuer Kernphysik, University Frankfurt, Max-von-Laue-Strasse 1, D-60438 Frankfurt (Germany)
3. Department of Physics, Auburn University, Auburn, Alabama 36849 (United States)
4. Lawrence Berkeley National Labararatory, Berkeley, California 94720 (United States)

Theoretical two-center interference patterns produced (i) by the K-shell photoionization process of the N{sub 2} molecule and (ii) by the Auger decay process of the K-shell hole state of the N{sub 2} molecule are compared for the case of equal photo- and Auger-electron energies of about 360 eV. The comparison shows that both the angular distribution of the photoelectrons and the angular distribution of the Auger electrons of equal energy in the molecular frame are primarily defined by the Young interference. The experimental data for the angular resolved K-shell Auger electrons as a function of the kinetic-energy release (KER) obtained earlier [Phys. Rev. A 81, 043426 (2010)] have been renormalized in order to visualize the angular variation in the regions of low Auger-electron intensities. That renormalized data are compared with the corresponding theoretical results. From the known behavior of the potential energy curves, the connection between the KER and the internuclear distance can be established. Since the Young interference pattern is sensitive to the internuclear distance in the molecule, from the measured KER dependence of the Young interference pattern one can trace the behavior of the Auger-electron angular distribution for different molecular terms as a function of internuclear distance. The results of that analysis are in a good agreement with the corresponding theoretical predictions.

• OSTI ID: 21448537
• Journal Information: Physical Review. A, Vol. 82, Issue 2; Other Information: DOI: 10.1103/PhysRevA.82.023420; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR DISTRIBUTION
AUGER EFFECT
COMPARATIVE EVALUATIONS
DISTANCE
ELECTRONS
EV RANGE
HOLES
INTERFERENCE
K SHELL
KINETIC ENERGY
MOLECULES
NITROGEN
PHOTOIONIZATION
PHOTON-MOLECULE COLLISIONS
POTENTIAL ENERGY
COLLISIONS
DISTRIBUTION
ELECTRONIC STRUCTURE
ELEMENTARY PARTICLES
ELEMENTS
ENERGY
ENERGY RANGE
EVALUATION
FERMIONS
IONIZATION
LEPTONS
MOLECULE COLLISIONS
NONMETALS
PHOTON COLLISIONS