Skip to main content Accessibility help
×
Home

The Processing of Energy Dispersion X-Ray Data in a Timesharing Computer

  • Harold E. Marr (a1) and William J. Campbell (a1)

Abstract

A time-sharing computer was used in conjunction with a semiconductor detector and radioisotopic sources to evaluate energy dispersion x-ray analysis for the rapid analysis of copper base alloys. The time-sharing computer served two purposes: to aid in the development of the analytical method and to simulate the action of a dedicated computer that would eventually be used as part of an on-line analytical device. Some of the general capabilities of time-sharing computers are discussed in this paper with some emphasis on the differences between the computer requirements of energy dispersive x-ray methods and conventional x-ray spectrography.

An annular source of americium 24l was used with a secondary fluorescer to excite 23 brass and bronze alloys. The 400 channel spectrum from a multichannel analyzer was recorded on paper tape. A telephone coupled teletype was used to transmit the X-ray spectrum to the central processing facility. Curve fitting and statistical analysis programs similar to those available from most commercial time-sharing computer operations were utilised as well as other programs written at this laboratory for processing digitized spectra.

Copyright

References

Hide All
1. Rasberry, S. D., Margoshes, M., and Scribner, B. F., “Applications of a Time-Sharing Computer in a Spectrochemistry Laboratory: Optical Emission and X-Ray Fluorescence,” MBS Technical Note 407, 55 pages (1968).
2. Time-Sharing Enterprises, “Time-Sharing Phone Book,” University City Science Bldg. 1, 3401 Market Street, Philadelphia, Pennsylvania 19104, 49 pages (1971).
3. Bevington, P. E.Data Reduction and Error Analysis for the Physical Sciences,” McGraw-Hill, New York, 336 pages (1969).
4. Computer Science Center. “XRAY67: Program System for X-Ray Crystallography,” University of Maryland Technical Report 67-58, 181 pages, (1967).
5. Savitsky, A and Golayj, M. J. E.Smoothing anä Differentiation of Data by Simiplified Least Squares Procedures,” Analytical Chemistry, Vol. 36, pp. 16271639 (1964).
6. Yule, H. P., “Study of Gamma-Ray Spectrum Distortion by Mathematical Smoothing,” Analytical Chemistry, Vol. 44, pp. 12451249, (1972).
7. Marr, H. E. I I I, “Mathematical Smoothing of Digitized X-Ray Spectra,” Bureau of Mines Information Circular 8553 (1972).
8. Rhodes, J. R., Hunter, C. B., Kellogg, D. L., Sieberg, R. D. and Furuta, T.. “Application of a Computer-Coupled Radioisotope X-Ray Spectrometer to Analysis of Steels,” Advances in X-Ray Analysis, Vol. 14, pp. 127138, (1971).

The Processing of Energy Dispersion X-Ray Data in a Timesharing Computer

  • Harold E. Marr (a1) and William J. Campbell (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