Abstract
It is shown that, when the n-electron continuum state is treated in LS-coupling, both the amplitude and the cross section for photo- and electron-impact ionization to such a state can be expressed as a linear combination of n-polar harmonics in the angles of emission of the n electrons. The analysis utilizes re-coupling techniques, largely avoiding redundant sums over products of Clebsch - Gordan coefficients. The Clebsch - Gordan series is generalized to n particles. Two selection rules are proved and the operation of such selection rules is illustrated by calculations of the differential cross section for (i) the complete photo-fragmentation of the lithium atom and (ii) the complete fragmentation of the helium atom under electron impact.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
