Skip to main content Accessibility help
×
Home

Energy Dispersive X-Ray Fluorescence Spectrometry at High Count Rates: Pulsed Tube Excitation and Recovery of Resolution by Computer Processing

  • J . E. Stewart (a1), H. R. Zulliger (a1) and W. E. Drummond (a1)

Abstract

Energy dispersive X-ray spectrometry has the potential for making very rapid analyses of multi-element samples. In order to fully exploit this capability several studies have been carried out with the goal of improving performance at high input count rates. A refined amplifier permits operation at input count rates up to 80000 per second with minimal peak shift and distortion. Optimum choice of tube parameters and filters permits utilization of a single Mo transmission target tube to analyze a broad range of elements in minimum time. Use of a pulsed tube further reduces the time required for analysis without sacrifice of precision or resolution. Dead time necessarily increases with increasing input count rate. It can be reduced by selecting a short amplifier time constant, but only with a loss of resolution. Digital processing permits recovery of the lost resolution. Some illustrations are given of spectra that have been processed on-line using a computer based multi-channel analyzer.

Copyright

References

Hide All
1. Reed, S. J. B., “Pulse Pile-up Rejection in Si(Li) X-ray Detection Systems”, J . Phys. E. 5, 997 (1972).
2. Jaklevic, J. M., Goulding, F. S., and Landis, D. A., “High Rate X-ray Fluorescence Analysis by Pulsed Excitation”, IEEE Tran s.NucL Sci. 19. No. 3, 392 (1972).
3. Zulliger, H. R. and Stewart, J. E., “X-ray Fluorescence Analysis with Transmission Target Tube s”, in Pickles, W. J., Newkirk, J. B., Barrett, C. S., and Ruud, C. O.(eds), Advances in X-ray Analysis, vol. 18, 278, Plenum Press (1975).
4. Stewart, J. E., “Resolution Enhancement of X-ray Fluorescence Spectra with a Computerized Multichannel Analyzer”, Appl. Spect, 29, 171 (1975).
5. Burger, H. C. and Cittert, P. H. van, “Wahre und Scheinbare Inensitatsverteilung in Spektrallinien”, Physik, Z. 79. 722 (1932); 81, 428 (1933).

Energy Dispersive X-Ray Fluorescence Spectrometry at High Count Rates: Pulsed Tube Excitation and Recovery of Resolution by Computer Processing

  • J . E. Stewart (a1), H. R. Zulliger (a1) and W. E. Drummond (a1)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed