Atomic Transition Probabilities and Lifetimes

Wiese, Wolfgang L.

doi:10.1007/978-1-4613-3935-9_10

Cited by 27 publications

(7 citation statements)

References 195 publications

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“…Transition probability values for elements up to calcium and low-ionization-potential ions can be found in two National Bureau of Standards monographs [147,148]. Wiese [149] has recently reviewed both experimental and theoretical evaluations of transition probabilities and life-times, also discussing the systematic trends of oscillator strengths along an isoelectronic sequence, obtained by developing f-values for a given transition in series expansion of inverse powers of the nuclear charge ZN. Neglecting relativistic corrections, the asymptotic values of f (for ZN -* °°) are zero for An = 0 transitions, and the hydrogenic limit for An =£ 0 transitions.…”

Section: Radiative Transition Probabilitiesmentioning

confidence: 99%

Soft-X-ray spectroscopic diagnostics of laboratory plasmas

1981

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Soft X-ray spectroscopic diagnostics of laboratory plasmas are considered. To start with, the state of the art in the knowledge of rate coefficients, cross-sections, transition probabilities, and ionization equilibrium calculations is reviewed. Next, the plasma spectral emission, i.e. continuum and line emission (including satellites), line broadening (including opacity), and total emitted radiation as an energy loss process, is considered. To conclude, a short discussion of X-ray plasma sources and instrumental problems is presented.

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Section: Radiative Transition Probabilitiesmentioning

confidence: 99%

Soft-X-ray spectroscopic diagnostics of laboratory plasmas

1981

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“…Harima et al (1978) measured the oscillator strength in a shock tube using the hook method of the resonance line and some low-lying excited states of barium. Wiese et al (1979) compiled the data on oscillator strengths of transitions and discussed various aspects of the methods used for these studies. Ueda et al (1984) also applied the hook method to determine the oscillator strength of the 6s 2 1 S 0 → 6snp 1 P 1 (n = 6-20), 6s 2 1 S 0 → 5dnp 1 P 1 (n = 6-7) and 6s 2 1 S 0 → 5dnp 3 P 1 and 3 D 1 (n = 6-8) Rydberg transitions relative to the resonance line.…”

Section: Introductionmentioning

confidence: 99%

High-Pressure Phase Transformation of Cobalt Monoxide Due to Electronic Transition

Noguchi

Atou

Kondo

et al. 1999

Jpn. J. Appl. Phys.

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We report new measurements for the oscillator strengths of the 6s6p 1 P 1 → 6snd 1 D 2 and 6s6p 3 P 1 → 6snd 3 D 2 Rydberg transitions of barium using a thermionic diode ion detector in conjunction with a Nd:YAG pumped dye laser system. The f-values have been calibrated with the absolute photoionization cross-section measured at the first ionization threshold from the 6s6p 1 P 1 and 6s6p 3 P 1 excited states employing the saturation technique. An excellent agreement is found for the 6s6p 1 P 1 → 6snd 1 D 2 Rydberg transitions with the earlier reported work. The data on the oscillator strength of the 6s6p 3 P 1 → 6snd 3 D 2 Rydberg transitions are reported for the first time. The oscillator strength densities in the continuum corresponding to the 6s6p 3 P 1 excited state have also been determined and a smooth merging of the discrete f-values into the oscillator strength densities is observed across the ionization threshold.

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“…The relative line intensity ratios I X /I R have been calculated, taking one line intensity (I R ) for the purpose of normalization. For each set of determined relative line intensities I X /I R , corresponding to a given plasma layer of the arc column, relative transition probabilities have been calculated according to the formula [19]…”

Section: Determination Of Transition Probabilitiesmentioning

confidence: 99%

Experimental transition probabilities andJ-file sum rule test for the transition array 3p–3d in neutral neon

Bacławski

2008

J. Phys. B: At. Mol. Opt. Phys.

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Seventy four intensities of neutral neon lines (Ne I), belonging to transitions 3p-3d, 3p -3d, 3p-3d , and 3p -3d (all in short denoted as 3p-3d), have been measured. The neon plasma produced in a wall-stabilized arc has been applied as the excitation source for neon atoms. From measured Ne I line intensities the respective relative transition probabilities (A ki ) have been determined. The absolute scale for the A ki data has been established by normalizing them to the radiative lifetime value for the level 2s 2 2p 5 2 P • 1/2 3d 2 [3/2] • 2 . The obtained transition probabilities have been compared with theoretical data and with results of previous experiments. The transition probabilities have been then converted to line strengths data and used for testing the J -file sum rule for the transition array 3p-3d. Some discrepancies between the measured data set and the results predicted by the J -file sum rule have been found.

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Atomic Transition Probabilities and Lifetimes

Cited by 27 publications

References 195 publications

Soft-X-ray spectroscopic diagnostics of laboratory plasmas

Soft-X-ray spectroscopic diagnostics of laboratory plasmas

High-Pressure Phase Transformation of Cobalt Monoxide Due to Electronic Transition

Experimental transition probabilities andJ-file sum rule test for the transition array 3p–3d in neutral neon

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