Raarup MK, Pedersen UV, Petrunin VV, Balling P, Andersen T. High-resolution vacuum-ultraviolet spectroscopy of an electron-cooled D- beam.
PHYSICAL REVIEW LETTERS 2000;
85:4028-4031. [PMID:
11056616 DOI:
10.1103/physrevlett.85.4028]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2000] [Indexed: 05/23/2023]
Abstract
The shape parameters for the lowest-lying (1)P(o) resonance, (2)¿0¿-3, of D- have been measured using high-resolution vacuum-ultraviolet spectroscopy. The experiment was performed at the storage ring ASTRID, and the resonance was resolved by applying electron cooling to reduce the velocity spread of the ion beam. The resonance has a width of 37(3) microeV while the asymmetry parameter q of the Fano profile is -16(3). These values present the first critical test of a large number of theoretical calculations.
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