Az Egri Ho Si Minh Tanárképző Főiskola Tud. Közleményei. 1987. (Acta Academiae Paedagogicae Agriensis : Nova series ; Tom. 18/13)

Tamás Franczia: An analytical method for calculating multicentre integrals built up from GTF-S I

- 30 a C2) a (2) 2 q CI) is the position vector of the second where = (x

1,y

J,z

1J, ?

2 = [

x

2>y

2>

z

2)> that are the position vectors of the corresponding electrons. When the two-electron system is in the n-th stationary state its statefunction having the ri> r

2 position-vectors, the S>, , spin-co-ordinates and the t time-variable as arguments can be written in the following form according to the non-relativistic quantum-mechanical theory of the many-body problem: r 2n

vrp ' , C2) where h is the Planck-constant, E

n is the energy of the system satisfying the following equation too: