| Popis: |
The orientation parameter, [l angle][ital J][sub [ital y]][r angle]/[ital J]([ital J]+1), of the [sup 2][ital F][sub 7/2] state of Ar[sup +], formed in the two-electron process He[sup +]+Ar[r arrow]He(1[ital s][sup 2])+Ar[sup +](3[ital p][sup 4]4[ital p],[sup 2][ital F][sub 7/2]) has been measured at various scattering angles. The measured value of [l angle][ital J][sub [ital y]][r angle], the component of the total angular momentum perpendicular to the collision plane, is interpreted as resulting from a collective circulation of the inactive 3[ital p][sup 4] core electrons as well as the active 4[ital p] electron. We find that over the range of scattering angles studied, this collective-electron circulation is in the direction of the rotating internuclear axis, the direction given by the propensity rule, suggesting that this rule is more general than heretofore proposed. |
