Larissa Podobedova

Critically Evaluated Atomic Transition Probabilities for Sulfur S I – S XV

Atomic transition probabilities for about 6400 allowed and forbidden lines of S I – S XV are tabulated based on a critical evaluation of recent literature sources. The transition probabilities were obtained mainly from recent sophisticated calculations carried out with complex computer codes. These tables provide data of interest for astronomical as well as laboratory plasmas. They will also be useful for the diagnostics of plasmas encountered in fusion energy research.

Atomic Transition Probabilities of Sodium and Magnesium. A Critical Compilation

This compilation is the first in a series of updates to a critical compilation published in 1969 [W. L. Wiese, M. W. Smith, and B. M. Miles, Atomic Transition Probabilities, Vol. II: Sodium through Calcium, NSRDS-NBS Vol. 2 (U.S. GPO, Washington, D.C., 1969)]. Atomic transition probabilities have been critically evaluated and compiled for about 11 400 spectral lines of sodium and magnesium (nuclear charge Z=11–12, respectively). The cited values and their estimated uncertainties are based on our consideration of all available theoretical and experimental literature sources. All ionization stages (except for hydrogenic) are covered, and the data are presented in separate tables for each atom and ion. Separate listings are given for “allowed” (electric dipole) transitions, on the one hand, and for “forbidden” (magnetic dipole plus electric and magnetic quadrupole) transitions, on the other. In each spectrum, lines are grouped into multiplets which are arranged in order of ascending lower and upper-level ene...

Atomic Transition Probabilities of Silicon. A Critical Compilation

This compilation is the third in a series of updates to a critical compilation published in 1969 by Wiese et al. [Atomic Transition Probabilities, Vol. II: Sodium through Calcium, NSRDS-NBS Vol. 22 (U.S. GPO, Washington, D.C., 1969)]. Atomic transition probabilities have been critically evaluated and compiled for about 5800 spectral lines of silicon (nuclear charge Z = 14 ). The cited values and their estimated uncertainties are based on our consideration of all available theoretical and experimental literature sources. All ionization stages (except for hydrogenic) are covered, and the data are presented in separate tables for each atom and ion. Separate listings are given for “allowed” (electric dipole) and “forbidden” (magnetic dipole plus electric and magnetic quadrupole) transitions. In each spectrum, lines are grouped into multiplets which are arranged in order of ascending lower and upper level energies, respectively. For each line, the emission transition probability A k i , the line strength S , a...

Atomic Transition Probabilities of Aluminum. A Critical Compilation

This compilation is the second in a series of updates to Atomic Transition Probabilities, Sodium through Calcium, published in 1969 by Wiese et al. [Atomic Transition Probabilities, Vol. II, Vol. II: Sodium through Calcium, NSROS-NBS Vol. 2 (U.S. GPO, Washington, D.C., 1969)]. Atomic transition probabilities have been critically evaluated and compiled for about 5000 spectral lines of aluminum (nuclear charge Z = 13 ). The cited values and their estimated uncertainties are based on our consideration of all available theoretical and experimental literature sources. All ionization stages (except for hydrogenic) are covered, and the data are presented in separate tables for each atom and ion. Separate listings are given for “allowed” (electric dipole) and “forbidden” (magnetic dipole plus electric and magnetic quadrupole) transitions. In each spectrum, lines are grouped into multiplets which are arranged in order of ascending lower- and upper-level energies, respectively. For each line, the emission transitio...

Atomic Spectral Tables for the Chandra X-Ray Observatory. Part I S VIII–S XIV

Tables of critically compiled wavelengths, energy levels, line classifications, and transition probabilities are given for spectra of ionized sulfur (S VIII–S XIV) in the region 21–170 A. These tables provide data of interest for the Emission Line Project in support of the analysis of astronomical data from the Chandra X-Ray Observatory. They will also be useful for the diagnostics of plasmas encountered in fusion energy research. The transition probabilities were obtained mainly from recent sophisticated calculations carried out with complex computer codes.

Atomic Spectral Tables for the Chandra X-Ray Observatory. Part II (Si vi - Si xii)

Tables of critically compiled wavelengths, energy levels, line classifications, and transition probabilities are given for spectra of ionized silicon (Si VI–Si XII) in the region 25–170 A. These tables provide data of interest for the Emission Line Project in support of analyses of astronomical data from the Chandra X-ray Observatory. They will also be useful for the diagnostics of plasmas encountered in fusion energy research. The transition probabilities were obtained mainly from recent sophisticated calculations carried out with complex computer codes.

Atomic Spectral Tables for the Chandra X-ray Observatory. Part IV. Ne V–Ne VIII

Tables of critically compiled wavelengths, energy levels, line classifications, and transition probabilities are given for spectra of ionized neon (Ne V–Ne VIII) in the region 55–170 A. These tables provide data of interest for the Emission Line Project in support of analysis of astronomical data from the Chandra X-Ray Observatory. They will also be useful for the diagnostics of plasma encountered in fusion energy research. The transition probabilities were obtained mainly from recent sophisticated calculations carried out with complex computer codes.

Atomic Spectral Tables for the Chandra X-Ray Observatory. Part III. Mg V–Mg X

Tables of critically compiled wavelengths, energy levels, line classifications, and transition probabilities are given for spectra of ionized magnesium (Mg V–Mg X) in the region 35–170 A. These tables provide data of interest for the Emission Line Project in support of analyses of astronomical data from the Chandra X-Ray Observatory. They will also be useful for the diagnostics of plasmas encountered in fusion energy research. The transition probabilities were obtained mainly from recent sophisticated calculations carried out with complex computer codes.

Atomic Spectral Tables for the Chandra X-ray Observatory

Tables of critically compiled wavelengths, energy levels, line classifications, and transition probabilities are given for spectra of ionized neon ~NeV–NeVIII ! in the region 55–170 Å. These tables provide data of interest for the Emission Line Project in support of analysis of astronomical data from the Chandra X-Ray Observatory. They will also be useful for the diagnostics of plasma encountered in fusion energy research. The transition probabilities were obtained mainly from recent sophisticated calculations carried out with complex computer codes. ©2004 by the U.S. Secretary of Commerce on behalf of the United States. All rights reserved. @DOI: 10.1063/1.1637924 #

New Generation of the NIST Atomic Spectroscopic Databases

The latest advances in development of atomic spectroscopic databases at the National Institute of Standards and Technology (NIST) result from implementation of modern technologies in database management and database‐user interaction. Here we report a number of recently developed and updated databases that exemplify this trend, and outline future plans for expansion and enhancement of the NIST atomic databases.