J/A+A/637/A10 Zr III transition data (Rynkun+, 2020)
Theoretical studies of energy levels and transition data for Zr III.
Rynkun P., Gaigalas G., Jonsson P.
<Astron. Astrophys. 637, A10 (2020)>
=2020A&A...637A..10R 2020A&A...637A..10R (SIMBAD/NED BibCode)
ADC_Keywords: Atomic physics
Keywords: atomic data
Abstract:
We seek to present accurate and extensive transition data for the
ZrIII ion. These data are useful in many astrophysical applications.
We used the multiconfiguration Dirac-Hartree-Fock and relativistic
configuration interaction (RCI) methods, which are implemented in the
general-purpose relativistic atomic structure package GRASP2018. The
transverse-photon (Breit) interaction, vacuum polarization, and
self-energy corrections are included in the RCI computations.
Energy spectra were calculated for the 88 lowest states in the ZrIII
ion. The root-mean-square deviation obtained in this study for
computed energy spectra from the experimental data is 450cm-1.
Electric dipole (E1), magnetic dipole (M1), and electric quadrupole
(E2) transition data, line strengths, weighted oscillator strengths,
and transition rates are computed between the above states together
with the corresponding lifetimes. The computed transition rates are
smaller than the experimental rates and the disagreement for weaker
transitions is much larger than the experimental error bars. The
computed lifetimes agree with available experimental values within the
experimental uncertainties.
Description:
Table 4 presents electric dipole (E1), magnetic dipole (M1), and
electric quadrupole (E2) transition data between the states of the
calculated energy levels for the ZrIII ion. In the Table transition
data, such as wavelengths, line strengths, weighted oscillator
strengths, transition rates of E1, M1, E2 transitions and the accuracy
indicator dT are given. In the Table also experimental wavelengths,
adjusted (by experimental wavelengths) transition rates, and
uncertainty (as in the NIST database) of each transition are given.
These uncertainties were evaluated by comparing transition rates with
experimental values given by Mayo et al. (2005, J. Quant. Spectr.
Radiat. Trans., 94, 109 ) and estimated by using methods described in
the (Kramida, 2013, Fusion Sci. Technol., 63, 313) paper.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table4.dat 141 929 Transition data of E1, M1, E2 transitions for
the Zr III ion
tablea1.dat 120 88 Atomic state function composition, energy levels
and lifetimes for Zr III
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- Nu Number of upper level as in tablea1.dat
4 I1 --- Ju J of upper level
6 A1 --- pu Parity of upper level
8- 18 A11 --- ustate Label of upper level
21- 22 I2 --- Nl Number of lower level as in tableA1.dat
24 I1 --- Jl J of lower level
26 A1 --- pl Parity of lower level
28- 38 A11 --- lstate Label of lower level
42- 43 A2 --- EM Type of the transition
47- 52 I6 cm-1 deltaE Transition energy
56- 64 F9.2 0.1nm lambda Wavelength of transition
69- 77 E9.3 s-1 A Radiative transition probability in the
length gauge (for E1 and E2)
82- 90 E9.3 --- gf Weighted oscillator strength in the
length gauge (for E1 and E2)
95-103 E9.3 --- S Line strength (in au) in the length gauge
(for E1 and E2)
108-112 F5.3 --- dT ? Accuracy indicator, characterizing the
uncertainty of the computed transition rates
for E1 and E2 defined by Eq.(2) in the paper
117-125 F9.2 0.1nm lambdaE ? Experimental wavelength of transition
(from NIST database)
127-135 E9.3 s-1 AA Adjusted (by experimental wavelength)
radiative transition probability
in the length gauge (for E1 and E2)
140-141 A2 --- un The estimated accuracies for transition
probabilities (1)
--------------------------------------------------------------------------------
Note (1): estimated accuracies for transition probabilities as follows:
B = 10%
C = 25%
C+: = 18%
D+: = 40%
D: = 50%
E: = >50%
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- No Sequential number
4- 25 A22 --- State State
28- 87 A60 --- LS LS components (1)
90- 95 I6 cm-1 ERCI RCI energy level (relative to the ground state)
97-102 I6 cm-1 ENIST ? NIST energy level (relative to the ground state)
104-111 E8.3 s taul ? Lifetime in length gauge
113-120 E8.3 s tauv ? Lifetime in velocity gauge
--------------------------------------------------------------------------------
Note (1): up to three LS components with a contribution >0.02 of the total wave
function) in LS-coupling
--------------------------------------------------------------------------------
Acknowledgements:
Pavel Rynkun, pavel.rynkun(at)gmail.com
(End) Pavel Rynkun [VU], Patricia Vannier [CDS] 25-Mar-2020