Negative ion relaxation and reactions in a cryogenic storage ring. Issue 6 (January 2020)

• Record Type: Journal Article
• Authors: Schmidt, H T; Rosén, S; Thomas, R D; Stockett, M H; Geppert, W D; Larson, Å; Löfgren, P; Simonsson, A; Källberg, A; Reinhed, P; Björkhage, M; Blom, M; Alexander, J D; Najeeb, P K; Ji, M; Kono, N; Anderson, E K; Eklund, G; Kristiansson, M K; Hole, O M; Hanstorp, D; Hartman, H; Barklem, P S; Grumer, J; Hansen, K; Gatchell, M; Cederquist, H; Zettergren, H
• Is Part Of: Journal of physics. Volume 1412:Issue 6(2019)
• Publication Date: 2020-01
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1412/6/062006
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: An overview of recent experimental results of studies of negative atomic and molecular ions in the Double ElectroStatic Ion-Ring ExpEriment, DESIREE is given. Metastable level lifetimes in atomic negative ions have been measured by time-dependent laser photodetachment. Rotational relaxation of diatomic anions is studied by near-threshold photodetachment. Spontaneous decays of small metal cluster anions by electron emission and fragmentation is studied with decay-channel specificity. Finally, mutual neutralisation of pairs of negative and positive ions has been investigated with initial and final state selectivity.