Theoretical lithium 22S→22Pand 2

Yan Zhou

¹

,

G. W. F. Drake

²

Abstract

The oscillator strengths for the lithium 2 S~2 P and 2 P~3 D transitions are calculated to high precision using variational wave functions in Hylleraas coordinates. The calculated oscillator strengths for these transitions are 0. 746 957 2(10)

Accurate Atomic Transition Probabilities for Hydrogen, Helium, and Lithium

“…We selected data from seven advanced calculations [31][32][33][34][35][36][37] and used high-precision radiative lifetime measurements [38][39][40] for an independent check of some theoretical results. The majority of tabulated data comes from the close-coupling calculations by Peach et al 37 A finding list and transition probabilities for the allowed lines of ͑Li I͒ are given in Tables 17-19.…”

“…The highest precision calculations were carried out by Yan and Drake 31 for the 2s 2 S-2p 2 P°and the 2p 2 P°-3d 2 D multiplets by constructing variational wave-functions in Hylleraas coordinates. They calculated the oscillator strengths for two transitions in both the dipole length and velocity formulations and obtained outstanding agreement.…”

Lifetime measurement of the cesium6P3/2level using ultrafast pump-probe laser pulses

“…The best agreement between theory and experiment in atomic lifetimes occurs in light atoms, with agreement at the 0.075% level in He + [20] where the atomic wave functions are exactly known, even approaching the 0.02% level in Li where the theoretical uncertainty is stated to be 1 × 10 −6 [21]. Only recently has a comparison approaching the 0.1% level in heavy alkali atoms become possible due to advances in relativistic manybody perturbation theory such as the all-order method [5,6,22].…”

Theoretical study of the absorption spectra of the lithium dimer

“…From photoassociation spectroscopy and cold collision studies performed in the last few years as well as recent theoretical work there have been significant critical tests of and improvements to the molecular potentials [12][13][14], particularly at long-range [15][16][17], and transition dipole moment data [15] available for Li 2 , as well as to the value of the lifetime of the Li 2p state [18,19]. This paper presents calculations of the spectra over the full range of wavelengths where absorption in the X 1 Σ + g -A 1 Σ + u and X 1 Σ + g -B 1 Π u bands is possible.…”