the diatomic systems, in particular, the pairs of Tl–He, Tl–Kr, Tl–Xe. For comparison, in this table there are also listed the results of calculation on the basis of the
single-configuration Dirac-Fock method Batygina DF et al. [25–27] (theory A), the
optimized DF-like method [18, 19] (theory B), as well as experimental data Choron-Scheps-Galagher (the Virginia group) . The qualitative estimate from Refs.
[22–24] has been listed as well.
In Table 5 we present the theoretical data on the collisional shift f ρ (in Hz/Torr)
the thallium atom hyperfine line at different temperatures (TK) for the systems Tl–
He, Tl–Kr, Tl–Xe: Theory A—the single-configuration Dirac-Fock method Batygina DF et al. [25–27]; C—our theory [18–21].
As can be seen from the presented data, our theory provides a physically reasonable agreement with experimental data on the hyperfine line collisional shifts for
the pairs of Tl–He, Tl–Kr, Tl–Xe.
In Table 6 we present our calculated values for adiabatic broadening Г a /p (in Hz/
Torr) of the thallium atom hyperfine line at different temperatures for the Tl–He
pair: C—our theory; A theory [25–27]. In Table 7 we list the similar our theoretical
data on the thallium atom hyperfine line adiabatic broadening of Г a /p (in Hz/Torr)
for the pairs Tl–Kr, Tl–Xe.
Table 4 The collisional shift
f ρ (in Hz/Torr) of the thallium
hyperfine line for pairs Tl–He,
Tl–Kr, Tl–Xe at T = 700 K
System
Tl–He
Tl–Kr
Tl–Xe
Experiment
130 ± 30
−490 ± 20
−1,000 ± 80
Qualitative
estimate
–
–
−5,500
Theory A
155.0
−850.0
−1,420.0
Theory B
139.0
–
–
Theory C
137.2
−504
−1,052
Experiment and the qualitative estimate by Choron-SchepsGalagher (Virginia group); Theory: A—single-configuration
Dirac-Fock method; B—the optimized Dirac-Fock method; C—
our theory (see text)
Table 5 The temperature
dependence of the collisional
shift f ρ (in Hz/Torr) for pairs
Tl–He, Tl–Kr, Tl–Xe
Pair
Tl–He
Tl–He
Tl–Kr
Tl–Xe
T, K
Theory A
Theory C
Theory C
Theory C
700
155
137.2
−504
−1,052
750
153.0
135.3
−461
−964
800
151
134.1
−422
−899
850
149
133.3
−391
−841
900
147.5
131.4
−362
−794
950
146
129.1
−330
−751
1,000
143
126.2
−308
−713
Theory: A—single-configuration Dirac-Fock method; C—our
theory
Optimized Perturbation Theory for Calculating the Hyperfine …
69
single-configuration Dirac-Fock method Batygina DF et al. [25–27] (theory A), the
optimized DF-like method [18, 19] (theory B), as well as experimental data Choron-Scheps-Galagher (the Virginia group) . The qualitative estimate from Refs.
[22–24] has been listed as well.
In Table 5 we present the theoretical data on the collisional shift f ρ (in Hz/Torr)
the thallium atom hyperfine line at different temperatures (TK) for the systems Tl–
He, Tl–Kr, Tl–Xe: Theory A—the single-configuration Dirac-Fock method Batygina DF et al. [25–27]; C—our theory [18–21].
As can be seen from the presented data, our theory provides a physically reasonable agreement with experimental data on the hyperfine line collisional shifts for
the pairs of Tl–He, Tl–Kr, Tl–Xe.
In Table 6 we present our calculated values for adiabatic broadening Г a /p (in Hz/
Torr) of the thallium atom hyperfine line at different temperatures for the Tl–He
pair: C—our theory; A theory [25–27]. In Table 7 we list the similar our theoretical
data on the thallium atom hyperfine line adiabatic broadening of Г a /p (in Hz/Torr)
for the pairs Tl–Kr, Tl–Xe.
Table 4 The collisional shift
f ρ (in Hz/Torr) of the thallium
hyperfine line for pairs Tl–He,
Tl–Kr, Tl–Xe at T = 700 K
System
Tl–He
Tl–Kr
Tl–Xe
Experiment
130 ± 30
−490 ± 20
−1,000 ± 80
Qualitative
estimate
–
–
−5,500
Theory A
155.0
−850.0
−1,420.0
Theory B
139.0
–
–
Theory C
137.2
−504
−1,052
Experiment and the qualitative estimate by Choron-SchepsGalagher (Virginia group); Theory: A—single-configuration
Dirac-Fock method; B—the optimized Dirac-Fock method; C—
our theory (see text)
Table 5 The temperature
dependence of the collisional
shift f ρ (in Hz/Torr) for pairs
Tl–He, Tl–Kr, Tl–Xe
Pair
Tl–He
Tl–He
Tl–Kr
Tl–Xe
T, K
Theory A
Theory C
Theory C
Theory C
700
155
137.2
−504
−1,052
750
153.0
135.3
−461
−964
800
151
134.1
−422
−899
850
149
133.3
−391
−841
900
147.5
131.4
−362
−794
950
146
129.1
−330
−751
1,000
143
126.2
−308
−713
Theory: A—single-configuration Dirac-Fock method; C—our
theory
Optimized Perturbation Theory for Calculating the Hyperfine …
69