Photoexcitation of He- hollow-ion resonances: observation of the 2s2p2 4P state.
Phys Rev Lett
; 93(19): 193001, 2004 Nov 05.
Article
in En
| MEDLINE
| ID: mdl-15600829
ABSTRACT
Highly correlated states are studied in He-, a fundamental 3-electron system and prototypical negative ion. The 2s2p(2) 4P state is observed for the first time. This state is detected in a resonant simultaneous double-Auger decay of unprecedented strength. In addition, the first measurements of photodetachment cross sections, positions, widths, and shapes of triply excited resonances in He- are reported. These measurements provide a sensitive test for several sophisticated ab initio calculations, and indicate differences in the position and shape of some structures.
Search on Google
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Phys Rev Lett
Year:
2004
Document type:
Article