Lifetimes of bound excited states of Pt?

30th International Conference on Photonic, Electronic, and Atomic Collisions

Chartkunchand, K.C.^1 ; Kamiska, M.^1,2 ; Anderson, E.K.^1 ; Kristiansson, M.K.^1 ; Eklund, G.^1 ; Hole, O.M.^1 ; Nascimento, R.F.^3 ; Blom, M.^1 ; Björkhage, M.^1 ; Källberg, A.^1 ; Löfgren, P.^1 ; Reinhed, P.^1 ; Rosén, S.^1 ; Simonsson, A.^1 ; Thomas, R.D.^1 ; Mannervik, S.^1 ; Davis, V.T.^4 ; Neill, P.A.^4 ; Thompson, J.S.^4 ; Hanstorp, D.^5 ; Zettergren, H.^1 ; Cederquist, H.^1 ; Schmidt, H.T.^1

Department of Physics, Stockholm University, AlbaNova, Stockholm

SE-106 91, Sweden^1

Institute of Physics, Jan Kochanowski University, Kielce

25-369, Poland^2

Centro Federal de Educação Tecnológica Celso Suckow da Fonseca, Petrópolis

RJ

25620-003, Brazil^3

Department of Physics, University of Nevada United States, Reno

NV

89557, United States^4

Department of Physics, University of Gothenburg, Gothenburg

SE-412 96, Sweden^5

关键词: Decay curves;    Electron configuration;    Function of time;    Measurements of;    Photon wavelength;    Radiative lifetime;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/875/3/022051/pdf
DOI  :  10.1088/1742-6596/875/3/022051

来源: IOP

【 摘 要 】

Synopsis Measurements of the radiative lifetimes of the two excited states of the platinum anion Pt- are presented. Pt- ions stored in the cryogenic ion storage ring DESIREE were photodetached at different photon wavelengths and the resulting yield of neutral Pt measured as a function of time was recorded. Analysis of the neutral decay curves show a 2:54±0:10 s lifetime for the higher-lying 5d106s 2S1=2 excited state and a lifetime in the range of 50-200 ms for the lower-lying 5d96s2 2D3=2 excited state. This is the first study to report the lifetime of a bound anion excited state with an electron configuration different from that of the anion ground state.