Inner-shell photodetachment thresholds: unexpected long-range validity of the Wigner law.
Threshold behavior in inner-shell photodetachment is studied for the first time, specifically with 2-, 3-, or 4-electron emission from He- and S-. The threshold shapes are surprisingly consistent with the Wigner threshold law in all cases, despite large PCI effects observed in He-. In S-, the s-wave law is observed to agree with the data over an unprecedented range, more than an order of magnitude greater than predictions, and allows for the observation of the d-wave component. The measurements also demonstrate a means for obtaining precise core-excitation energies of free atoms.
Bilodeau
R C
RC
Western Michigan University, Physics Department, Kalamazoo, Michigan 49008-5151, USA.
Bozek
J D
JD
Gibson
N D
ND
Walter
C W
CW
Ackerman
G D
GD
Dumitriu
I
I
Berrah
N
N