Atomic Transition Probabilities

W. L. Wiese, J. R. Fuhr and T. M. Dieters, Atomic Transition Probabilities for Carbon, Nitrogen and Oxygen A Critical Data Compilation, J. Phys. Chem. Ref. Data, Monograph 7, 1996. 

W. L. Wiese, M. Smith, and B. M. Glennon, Atomic Transition Probabilities, Vol. I, National Standard Reference Data Systems (NSRDS) report no. NSRDS NBS-4, 1966 W. L. Wiese, M. Smith, and B. M. Miles, Atomic Transition Probabilities, Vol. II, NSRDS, NBS-22, 1969. 

The Data Center on Atomic Transition Probabilities at the National Institute of Standards and Technology, formerly the National Bureau of Standards, in Gaithersburg, Maryland 20899, USA is continuing its critical data compilation and is also engaged in developing a comprehensive numerical and bibliographical database. 

Wiese, W.L., Smith, M.W., and Glennon, B.M., Atomic Transition Probabilities, Vol. I, Hydrogen through Neon, NSRDS-NBS 4, U.S. Government Printing Office, Washington, D.C., 1966. 

Thi s dal abase prov ides access anti search capabil ity for NI ST critical ly eval uated data on atomic energy k vels, wavelengths, and transition probabilities lhat arc reasonably up-to-daie. The Atomic Energy Levels Data Center and Data Center on Atomic Transition Probabilities and Line Shapes have carried out these crilical compilations. Boih Data Centers are located in the Physics laboratory at ihe National Institute of Standards and Technology (NIST). This database is also a component of the NASA Astrophysics Data System (ADSJ. 

Atomic Energy levels and Wavelengths W.C. Martin1, J, Sugar1, and A, Musgrove1 Atomic Transition Probabilities W. L. Wiese1, J. R. Fuhr1... 

In total, the database contains the wavelengths of 91,000 lines of about 900 spectra in the range from 0.1 nm to 2,000 pm. Also, for about one-half of the lines, atomic transition probabilities are available with estimated uncertainties, which are listed by code letters (A < 3%, B < 10%, C < 25%, D < 50%). 

This spectrum presents an instructive case for the large uncertainties in atomic transition probabilities, obtained even with sophisticated multiconfiguration calculations. For this ion, three extensive and detailed atomic structure calculations have been undertaken in the last ten years [15-17]. 

G.A. Martin, J.R. Fuhr, W.L Wiese Atomic transition probabilities Scandium through Manganese, J. Phys. Chem. Ref. Data IT Suppl. 3 (1988)... 

Another possible somce of non-QED corrections to the energy levels is the parity - conserving weak interaction between the electron and the nucleus. The estimates show that these corrections are too smeill to be considered seriously both in light and heavy atoms and in HCI [9], [16]. The parity non -conserving weak interaction can influence atomic transition probabilities. This leads to the observable asymmetry effects in radiation (see Chapter IV of this book). We should mention that QED effects appear to the observable also in molecules (see the recent publications [17], [18]). 

For the 2005 edition of this Handbook, we include new, more accurate data for Fe I and Fe II, and Ba I and Ba II The new tables contain critically evaluated atomic transition probabilities for over 10500 selected lines of all elements for which reliable data are available on an absolute scale. The material is largely for neutral and singly ionized spectra, but also includes a number of prominent lines of more highly charged ions of important elements. 

J. R. Fuhr, H. R. Felrice, K. Olsen, J. Hwang, and S. Kotochigova, Atomic Transition Probability Bibliographic Database, . 

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