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Göteborgs universitets publikationer

Collective relaxation processes in atoms, molecules and clusters

Författare och institution:
P. Kolorenc (-); V. Averbukh (-); Raimund Feifel (Institutionen för fysik (GU)); J. H. D. Eland (Institutionen för fysik (GU))
Publicerad i:
Journal of Physics B: Atomic, Molecular and Optical Physics, 49 ( 8 ) s. artikel nr 082001
ISSN:
0953-4075
E-ISSN:
1361-6455
Publikationstyp:
Artikel, refereegranskad vetenskaplig
Publiceringsår:
2016
Språk:
engelska
Fulltextlänk:
Fulltextlänk (lokalt arkiv):
Sammanfattning (abstract):
Electron correlation is an essential driver of a variety of relaxation processes in excited atomic and molecular systems. These are phenomena which often lead to autoionization typically involving two-electron transitions, such as the well-known Auger effect. However, electron correlation can give rise also to higher-order processes characterized by multi-electron transitions. Basic examples include simultaneous two-electron emission upon recombination of an inner-shell vacancy (double Auger decay) or collective decay of two holes with emission of a single electron. First reports of this class of processes date back to the 1960s, but their investigation intensified only recently with the advent of free-electron lasers. High fluxes of high-energy photons induce multiple excitation or ionization of a system on the femtosecond timescale and under such conditions the importance of multi-electron processes increases significantly. We present an overview of experimental and theoretical works on selected multi- electron relaxation phenomena in systems of different complexity, going from double Auger decay in atoms and small molecules to collective interatomic autoionization processes in nanoscale samples.
Ämne (baseras på Högskoleverkets indelning av forskningsämnen):
NATURVETENSKAP ->
Fysik
NATURVETENSKAP ->
Fysik ->
Atom- och molekylfysik och optik
Nyckelord:
electron correlation, autoionization, multiple ionization
Postens nummer:
234515
Posten skapad:
2016-04-11 15:05
Posten ändrad:
2016-06-22 11:33

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