Oscillator Strength for n=2 Transitions in Highly Ionized Sulfur

Oscillator strength f-values for L-shell transitions in highly ionized sulfur are studied by the beam--foil technique at the HI-13 tandem accelerator in China Institute of Atomic Energy. The lifetimes of the upper levels 2s2p¹P⁰₁, 2p^{2 1}S₀, 2p^{2 3}P₁, 2p^{2 3} P₂, 2 p^{2 3}P₀ of Be-like sulfur are measured to be 129±4, 81±5, 165±7, 159±8, 176±11ps. By using the measured lifetimes, the f-values are calculated to be 0.074, 0.082, 0.060, 0.066, 0.229, 0.056, 0.083, 0.089, 0.028 for the transitions 2s²2p^{2 3}P₁－2s2p^{3 3}P⁰₁, 2s²2p ²P⁰_3/2-2s2p^{2 2}P_1/2, 2s2p^{2 4}P_3/2-2p^{3 4}S⁰_3/2, 2s²2p ²P⁰_1/2-2s2p^{2 2}D_3/2, 2s^{2 1}S₀-2s2p ¹P⁰₁, 2s2p¹P⁰₁-2p^{2 1}S₀, 2s2p³P⁰₀-2p^{2 3}P₁, 2s2p ³P⁰₂2p^{2 3}P₂ and 2s2p ³P⁰₁-2p^{2 3}P₀. Most of the experimental results are in agreement with theoretical studies, but differ slightly from the previous experimental data.