Oscillator strengths measurement

CONTINUUM OPTICAL OSCILLATOR- STRENGTH MEASUREMENTS BY ELECTRON... 

Optical Oscillator-Strength Measurements By Electron Spectroscopy... 

Optical Oscillator-Strength Measurements By Electron Spectroscopy where E is the energy loss. If E0 is the incident energy... 

In this section we discuss the more important experimental results for continuum oscillator strengths measured by electron spectroscopy that have been reported up to mid 1978. The discussion is divided on the basis of target species rather than the type of experiment since this stresses the interrelation and complementary nature of many of the experiments. As the experimental work is far from complete in many cases, only a limited picture of the overall breakdown processes is available at present. In particular, a very limited amount of work has been reported for inner shells. More data are generally available for mass fragmentation (photoionization mass spectrometry) than for partial ionization cross sections (photoelectron spectroscopy). 

In the case of CO (see Fig. 32, which shows the sum of the C+ and 0 + oscillator strengths) a rather more complete picture of the dissociative ionization breakdown can be constructed since the C22 state oscillator strength has been measured in the (e,2e) experiment171 in addition to other higher states. In Fig. 32 the total C+ +0+ oscillator strength measured in the (e,ion) experiment25 is compared with the (e,2e) partial oscillator... 

Continuum Optical Oscillator-strength Measurements by Electron Spectroscopy in the Gas Phase... 

Fig. 8.22. The vanishing radiative width in the Ba spectrum. Experimental data are shown which correspond to oscillator strength measurements below the ionisation threshold by the magneto-optical method described in chapter 4, which also gives an overview of the Ba spectrum including the broad 5d8p perturber responsible for the vanishing radiative width. The inset shows a comparison between measured values (squares) and an MQDT extrapolation (triangles) on a logarithmic scale (see also fig. 4.3 - after J.-P. Connerade et al. [136]).

From Tx, determined by oscillator strength measurements in absorption, it is possible to obtain the laser transition oscillator strength from table 5 and eq. (123). It has been verified that the result is nearly constant for non-centrosymmetric crystals (Auzel and Michel 1975), as shown in table 6 where the integrated cross-section has been obtained using eqs. (117) and (121). Using the average value of 3.7x 10 cm, an estimate of the laser cross-section for any Nd -doped material can be obtained as (Auzel 198T)... 

Fig.9.31. Illustration of oscillator strength measurements [9.1]. An experimental recording for theAlI resonance doublet is included...

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