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The European Physical Journal D

, Volume 8, Issue 1, pp 49–58 | Cite as

Inelastic cross-sections and natural lifetimes for the 62D3/2, 5/2 and 82S1/2 states of Rb

  • A. Ekers
  • M. Głódź
  • J. Szonert
  • B. Bieniak
  • K. Fronc
  • T. Radelitski
Article

Abstract

The results of an experimental study of population dynamics following excitation of 62D5/2, 3/2 and 82S1/2 states of rubidium are reported. Excitation transfer and quenching cross-sections in collisions with ground state rubidium atoms, and natural lifetimes have been measured. The experiment was performed in a vapour cell, using pulsed two-photon excitation and photon counting detection. The analysis of time dependent signals was based on a rate equation model in which transitions induced by thermal radiation have been accounted for. The measurements yielded following results: (1) 62D state J-mixing cross-section: σ 6D 5/2 Rb-Rb = 9.2(2.1) × 10−14 cm2; (2) cross-sections for 82S → 62D excitation transfer process: σ 8S→6D Rb-Rb = 3.4(1.2) × 10−14 cm2; (3) quenching cross-sections: σ q, 8S Rb-Rb = 12,8(3.4) × 10−14 cm2, σ q, 6D 3/2 Rb-Rb = 22.8(2.9) × 10−14 cm2, σ q, 6D5/2 Rb-Rb = 14.1(5.7) × 10−14 cm2; (4) radiative lifetimes: τ8S = 161(3) ns, τ6D 3/2 = 256(4) ns, τ6D 5/2 = 249(5) ns.

PACS

34.50.Fa Electronic excitation and ionization of atoms (including beam-foil excitation and ionization) 32.70.Cs Oscillator strengths, lifetimes, transition moments 32.50.+d Fluorescence, phosphorescence (including quenching) 

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Copyright information

© Società Italiana di Fisica Springer-Verlag 2000

Authors and Affiliations

  • A. Ekers
    • 1
  • M. Głódź
    • 2
  • J. Szonert
    • 2
  • B. Bieniak
    • 2
  • K. Fronc
    • 2
  • T. Radelitski
    • 2
  1. 1.Institute of Atomic Physics and SpectroscopyUniversity of LatviaRigaLatvia
  2. 2.Institute of PhysicsPolish Academy of SciencesWarsawPoland

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