56
A. V. Glushkov et al.
1
τ e f f
= 0 + BBR =
1
τ 0
+
1
τ B B R
.
(3b)
The detailed procedures of calculation of the radial and angular integrals (amplitudes) in the matrix elements are described in Refs. [45–62]. All computing is
performed on the basis of the modified quantum PC code “Superatom-ISAN”
(version 93).
3 Results and Conclusions
Below we present some results of calculation of the spectroscopic characteristics
(ionization rates, effective lifetimes) of the sodium atom in a Black-body radiation
field for different states and temperatures.
In Fig. 1, we list our data for temperature dependence of the sodium ionization rate
(state 17D), the model calculational results by Kleppner et al. within the Coulomb
approximation and corresponding experimental data [3].
The analysis of the data in Fig. 1 shows that at temperatures above 150 K the data of
our theory and the Coulomb model calculational data by Kleppner et al. are very close
to each other and are sufficiently consistent with the experimental measurements, but
at temperatures below 150 K there is some deviation of the experimental data from
the Coulomb model calculational results.
Fig. 1 Temperature
dependence of the 17D
sodium ionization rate: our
data (interruptible line); the
model calculation data by
Kleppner et al. (continuous
line); experimental data by
Kleppner et al. (circles)
A. V. Glushkov et al.
1
τ e f f
= 0 + BBR =
1
τ 0
+
1
τ B B R
.
(3b)
The detailed procedures of calculation of the radial and angular integrals (amplitudes) in the matrix elements are described in Refs. [45–62]. All computing is
performed on the basis of the modified quantum PC code “Superatom-ISAN”
(version 93).
3 Results and Conclusions
Below we present some results of calculation of the spectroscopic characteristics
(ionization rates, effective lifetimes) of the sodium atom in a Black-body radiation
field for different states and temperatures.
In Fig. 1, we list our data for temperature dependence of the sodium ionization rate
(state 17D), the model calculational results by Kleppner et al. within the Coulomb
approximation and corresponding experimental data [3].
The analysis of the data in Fig. 1 shows that at temperatures above 150 K the data of
our theory and the Coulomb model calculational data by Kleppner et al. are very close
to each other and are sufficiently consistent with the experimental measurements, but
at temperatures below 150 K there is some deviation of the experimental data from
the Coulomb model calculational results.
Fig. 1 Temperature
dependence of the 17D
sodium ionization rate: our
data (interruptible line); the
model calculation data by
Kleppner et al. (continuous
line); experimental data by
Kleppner et al. (circles)