Radiative Double Electron Capture Observed During O{sup 8+}+C Collisions At 38 Mev

Journal Article · Wed Jun 01 04:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3586062· OSTI ID:21513465

Simon, A; Warczak, A ^[1]; Tanis, J A ^[2]

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1. Institute of Physics, Jagiellonian University, Krakow (Poland)
2. Department of Physics, Western Michigan University, Kalamazoo, MI (United States)

Radiative double electron capture (RDEC) is a one-step process during which two free (or quasifree) target electrons are captured into bound states of the projectile, e.g., into an empty K-shell, and the energy excess is released as a single photon. This process can be considered as a time inverse of double photoionization. As photon interacts with one electron only, RDEC is due to electron-electron interaction. Moreover, RDEC is investigated during bare ion-atom collisions and, unlike double photoionization, it does not have background from spectator electrons. Thus, RDEC may be the simplest, clean tool for exploration of the electron-electron interaction in the presence of electromagnetic fields generated during ion-atom collisions. Recently, an experiment dedicated to the RDEC process with 38 MeV O{sup 8+} ions colliding with a carbon foil was conducted at Western Michigan University using the tandem Van de Graaff accelerator. This experiment confirmed that the observation of such process is possible and allowed for estimation of the RDEC cross section of 3.2(1.9) b, which is significantly greater than the theoretically predicted value of 0.15 b.

• OSTI ID: 21513465
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1336; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ACCELERATORS
ATOM COLLISIONS
BOSONS
CAPTURE
CARBON
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
ELECTROMAGNETIC FIELDS
ELECTRON CAPTURE
ELECTRON COLLISIONS
ELECTRON-ELECTRON COLLISIONS
ELECTRONIC STRUCTURE
ELECTRONS
ELECTROSTATIC ACCELERATORS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
EXPLORATION
FERMIONS
ION COLLISIONS
ION-ATOM COLLISIONS
IONIZATION
IONS
K SHELL
LEPTONS
MASSLESS PARTICLES
MEV RANGE
MEV RANGE 10-100
MULTICHARGED IONS
NONMETALS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXYGEN IONS
PHOTOIONIZATION
PHOTONS
VAN DE GRAAFF ACCELERATORS