High-energy two-electron capture with emission of a single photon

Journal Article · Sat Dec 15 00:00:00 EST 2007 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.76.062701· OSTI ID:21140652

Drukarev, E G; Mikhailov, A I ^[1]; Mikhailov, I A ^[1]; Scheid, W ^[2]

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1. Petersburg Nuclear Physics Institute, Gatchina, St. Petersburg 188300 (Russian Federation)
2. Justus-Liebig-Universitaet Giessen, Giessen 35392 (Germany)

We investigate the two-electron capture with emission of a single photon to the ground state in the Coulomb field of a heavy nucleus in its collision with a light atom. Describing electron-electron interactions in the bound state perturbatively, we obtained an analytical formula for the high-energy limit of the cross section. In combination with previous results obtained in the same approach we calculated the cross section in a broad interval of energies of the collision. We show that the amplitude of the process at high energy depends on the behavior of the bound state wave function near the triple coalescence point. We analyze the properties of the approximate wave functions which are necessary for the description of the high-energy limit.

• OSTI ID: 21140652
• Journal Information: Physical Review. A, Vol. 76, Issue 6; Other Information: DOI: 10.1103/PhysRevA.76.062701; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
BOUND STATE
COALESCENCE
COULOMB FIELD
CROSS SECTIONS
ELECTRON CAPTURE
ELECTRON-ELECTRON COLLISIONS
ELECTRON-ELECTRON COUPLING
ELECTRON-ELECTRON INTERACTIONS
GROUND STATES
HEAVY NUCLEI
PERTURBATION THEORY
PHOTOEMISSION
PHOTON EMISSION
PHOTON-NUCLEON INTERACTIONS
PHOTONS
WAVE FUNCTIONS