Variational calculation of positronium-helium-atom scattering length

Adhikari, Sadhan K.

Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/66558

Title:

Variational calculation of positronium-helium-atom scattering length

Author(s):

Adhikari, Sadhan K.

Institution:

Universidade Estadual Paulista (UNESP)

ISSN:

1050-2947

Abstract:

A basis-set calculation scheme for S-waves Ps-He elastic scattering below the lowest inelastic threshold was formulated using a variational expression for the transition matrix. The scheme was illustrated numerically by calculating the scattering length in the electronic doublet state: a=1.0±0.1 a.u.

Issue Date:

1-Aug-2001

Citation:

Physical Review A. Atomic, Molecular, and Optical Physics, v. 64, n. 2, 2001.

Keywords:

Atoms
Electrons
Fermions
Green's function
Ground state
Helium
Integration
Matrix algebra
Nonlinear equations
Polynomials
Vectors
Elastic scattering
Legendre polynomials
Positronium
Schrodinger equation
Schwinger variational method
Transition matrix
Wave functions
Zero-energy elastic cross section
Scattering

Source:

http://dx.doi.org/10.1103/PhysRevA.64.022702

URI:

Access Rights:

Acesso restrito

Type:

outro

Source:

http://repositorio.unesp.br/handle/11449/66558

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