Photoionization cross sections
This site:
Atomic data for astrophysics. II.
New analytic fits for photoionization cross sections of atoms and ions.
D. A. Verner, G. J. Ferland, K. T. Korista, and D. G. Yakovlev, 1996,
ApJ, 465, 487
Abstract.
We present a complete set of analytic fits to the non-relativistic
photoionization cross
sections for the ground states of atoms and ions of elements from H through
Si, and S, Ar, Ca, and Fe. Near the ionization thresholds, the fits are based
on the Opacity Project theoretical cross sections interpolated and smoothed
over resonances. At higher energies, the fits reproduce calculated
Hartree-Dirac-Slater photoionization cross sections.
PostScript
653.1 K, including figures and table.
Analytic fits for partial photoionization cross sections.
D. A. Verner & D. G. Yakovlev, 1995, A&AS, 109, 125
Abstract. We present a compact, uniform and complete set of analytic
fits to the partial Hartree-Dirac-Slater photoionization cross sections for
the ground state shells of all atoms and ions of elements from H to Zn
(Z <= 30). Comparison with experiment and theory demonstrates
generally high accuracy of the fits up to energies of 100 keV.
LaTeX 19.8 K,
PostScript
91.4 K (text only).
Isoelectronic sequence fits to configuration-averaged
photoionization cross sections and ionization energies.
R. E. H. Clark, R. D. Cowan, & F. W. Bobrowicz,
1986, Atomic Data Nucl. Data Tables, 34, 415.
Description
of the tables (2.3 K).
- Table 1. Fit parameters for calculation of ionization energies.
He-like to Al-like isoelectronic sequences, excited subshells only.
ASCII
(9.6 K).
- Table 2. Fit parameters for calculation of photoionization
cross sections.
He-like to Al-like isoelectronic sequences, excited subshells only.
ASCII
(15.6 K).
Photoabsorption cross sections for positive atomic ions with Z<=30.
R. F. Reilman & S. T. Manson, 1979, ApJS, 40, 815.
- Table 1. Total Hartree-Slater photoionization cross sections.
Description
(0.7 K),
ASCII
(627.3 K).
Photon cross sections from 0.1 keV to 1 MeV for elements Z=1 to Z=94.
WM. J. Veigele, 1973, Atomic Data Tables, 5, 51.
- Table 1. Photoelectric cross sections from 1 keV to 1 MeV for
elements Z=1 to Z=30.
Description
(0.7 K),
ASCII
(17.6 K).
Description
of the table (0.7 K).
- Table 1. Total photoionization cross section of He I.
ASCII
(3.5 K).
Single and double photoionization cross sections of atomic nitrogen from
threshold to 31 A.
J. A. R. Samson & G. C. Angel, 1990, Phys. Rev. A, 42, 1307.
- Table 1. Absolute experimental total photoionization cross
sections of N I.
Description
(0.7 K),
ASCII
(0.6 K).
Total photoionization cross sections of atomic oxygen from
threshold to 44.3 A.
G. C. Angel & J. A. R. Samson, 1988, Phys. Rev. A, 38, 5578.
- Table 1. Absolute experimental total photoionization cross
sections of O I.
Description
(0.7 K),
ASCII
(2.3 K).
Absolute photoionization cross-section tables for helium, neon, argon,
and krypton in the VUV spectral regions.
G. V. Marr & J. B. West, 1976, Atomic Data Nucl. Data Tables, 18, 497.
Description
of the tables (1.7 K). Note: These data for He I must be superseded
by Samson et al. (1994) data (see above). Accuracy of Marr & West data for
Ne I and Ar I is worse than it is quoted in the paper.
- Table 1. Total photoionization cross section of He I.
ASCII
(2.4 K).
- Table 2. Total photoionization cross section of Ne I.
ASCII
(3.7 K).
- Table 3. Total photoionization cross section of Ar I.
ASCII
(2.8 K).
Other sites:
Opacity Project photoionization cross sections
TOPbase
Dima Verner
(verner@oblako.pa.uky.edu)
Last updated: 1996 October 30
Back to Atomic Data for Astrophysics
Dima Verner's homepage