Notizen: Messung der Lebensdauer des Zustandes 5s 5p ³P¹ von Strontium

Radiative lifetimes of the lowest 3P1 metastable states of Ca and Sr

“…We ob- [11] dye-laser excitation 20.1 ± 0.4 [12] 20.9 ± 0.9 [13] 22.0 ± 0.5 [14] 74 ± 28 Atomic beam technique using [6] discharge excitation served a significant increase of the measured value (see Table 2) for low discharge voltages (< 20 V). However, in the region of voltages 20-60 V the decay length is constant and the corresponding mean lifetime is τ ( 3 P 1 ) ∼ = 600 µs.…”

“…The mean radiative lifetimes for Ca( 3 P 1 ) and Sr( 3 P 1 ) have been investigated by a variety of experimental methods, including interferometric measurements [1,2], atomic beam techniques [3][4][5][6] and time-resolved either emission or absorption studies following dye laser excitation [7][8][9][10][11][12][13][14][15] as well as being the object of theoretical calculations [6][7][8][9][10][11][12][13][14][15][16][17][18][19]. The optically metastable excited states of these atoms have been studied especially with regards to processes leading to the observation of chemiluminescence.…”