Differential cross sections for electron capture by protons in hydrogen and helium

Journal Article · Sat Nov 01 00:00:00 EST 1986 · Sov. J. Plasma Phys. (Engl. Transl.); (United States)

OSTI ID:6480733

Godunov, A L; Kunikeev, S D; Senashenko, V S

The differential cross sections for the capture of electrons by protons are calculated for intermediate and high energies of the colliding particles in hydrogen and helium. The final-state wave function used in the calculations has the correct asymptotic behavior and is an approximate solution of the Faddeev equations, modified to reflect the Coulomb nature of the interaction. The interaction of the captured electron with the residual ion and the interaction of heavy particles with each other are taken into account in the same way. This approach makes it possible to study the effect of the final-state interaction on the behavior of the differential cross sections for charge exchange. The interaction of the heavy particles is shown to result in an increase in the electron capture cross sections at large scattering angles, while the interaction of the electron with the residual ion gives rise to a Thomas peak corresponding to a two-step electron capture mechanism. Methods for calculating the charge-exchange amplitude are discussed. The differential cross sections calculated in various approximations are compared with experimental data.

• Research Organization: Scientific-Research Institute of Nuclear Physics, Moscow State University
• OSTI ID: 6480733
• Journal Information: Sov. J. Plasma Phys. (Engl. Transl.); (United States), Vol. 12:11
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
HELIUM
ION-ATOM COLLISIONS
HYDROGEN
HYDROGEN IONS 1 PLUS
PLASMA
BRINKMAN-KRAMERS APPROXIMATION
CHARGE EXCHANGE
DIFFERENTIAL CROSS SECTIONS
EIKONAL APPROXIMATION
FADDEEV EQUATIONS
HYPERGEOMETRIC FUNCTIONS
IMPULSE APPROXIMATION
SCHROEDINGER EQUATION
WAVE FUNCTIONS
ATOM COLLISIONS
CATIONS
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
DIFFERENTIAL EQUATIONS
ELEMENTS
EQUATIONS
FLUIDS
FUNCTIONS
GASES
HYDROGEN IONS
ION COLLISIONS
IONS
NONMETALS
PARTIAL DIFFERENTIAL EQUATIONS
RARE GASES
WAVE EQUATIONS
640304* - Atomic
Molecular & Chemical Physics- Collision Phenomena