Rost, J. and Gersbacher, R. and Richter, Klaus and Briggs, J. and Wintgen, Dieter (1991) The nodal structure of doubly-excited resonant states of helium. Journal of Physics B 24, pp. 2455-2466.
Other URL: http://stacks.iop.org/0953-4075/24/2455
The authors examine the nodal structure of accurate helium wavefunctions calculated by direct diagonalization of the full six-dimensional problem. It is shown that for fixed interelectronic distance R (or hyperspherical radius R) the symmetric doubly-excited resonant states have well defined lambda , mu nodal structure indicating a near separability in prolate spheroidal coordinates. For fixed lambda , however, a clear mixing of R, mu nodes is demonstrated. This corresponds to a breakdown of the adiabatic approximation and can be understood in terms of the classical two-electron motion.
|Institutions:||Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Klaus Richter|
|Subjects:||500 Science > 530 Physics|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||No|
|Deposited On:||20 Mar 2007|
|Last Modified:||20 Jul 2011 20:56|