Radiative lifetime of metastable 2 /sup 3/S/sub 1/ Li/sup +/

作者: R. D. Knight , M. H. Prior

DOI: 10.1103/PHYSREVA.21.179

关键词: PhysicsExcited stateFluorescenceRadiative transferCharged particleLuminescenceIonAtomic physicsMetastabilityPhoton

摘要: The radiative lifetime of 1s2s /sup 3/S/sub 1/ Li/sup +/ ions has been measured by a comparison the count rate spontaneous decay photons (210 A) to laser-induced fluorescence signal proportional total number metastable ions. were confined in rf-quadrupole trap, and used was intercombination transition 1s2p 3/P/sub 1s/sup 2/ 1/S/sub 0/ at 202 A. state populated from absorption laser 5485 result is tau/sub r/=58.6 +- 12.9 sec (95% confidence level); theory predicts r/=49.1 sec.

参考文章(15)
G. Breit, E. Teller, Metastability of Hydrogen and Helium Levels. The Astrophysical Journal. ,vol. 91, pp. 215- ,(1940) , 10.1086/144158
Hans R. Griem, Spontaneous Single-Photon Decay of 2 ^{3}S_{1} in Helium-Like Ions The Astrophysical Journal. ,vol. 156, ,(1969) , 10.1086/180358
Joseph R. Woodworth, H. Warren Moos, Experimental determination of the single-photon transition rate between the 2 3 S 1 and 1 1 S 0 states of He I Physical Review A. ,vol. 12, pp. 2455- 2463 ,(1975) , 10.1103/PHYSREVA.12.2455
Dong L. Lin, Lloyd Armstrong, Nonexponential decay profile of the 2 /sup 3/S/sub 1/ state of He-like ions Physical Review A. ,vol. 16, pp. 791- 795 ,(1977) , 10.1103/PHYSREVA.16.791
Helium-like ion forbidden line emission, and solar active regions Philosophical transactions - Royal Society. Mathematical, physical and engineering sciences. ,vol. 270, pp. 127- 133 ,(1971) , 10.1098/RSTA.1971.0067
G. W. F. Drake, A. Dalgarno, Intercombination Oscillator Strengths in the Helium Sequence The Astrophysical Journal. ,vol. 157, pp. 459- ,(1969) , 10.1086/150080