Scientific Quarterly Journal of Geosciences

Scientific Quarterly Journal of Geosciences

Computer Simulation for intensity variations of ion current in mass spectrometry

Document Type : Original Research Paper

Author
Minou Karimi
Geological Survey of Iran, Tehran, Iran
Abstract
In this article, a computer simulation program is developed to formulate the variations of ion current intensity in terms of time in mass spectrometry analysis of the elements. The aim of this simulation is to increase the accuracy of isotope ratio measurements. Stocks equations have been used in this simulation. The computer program prepared, fits the best polynomial to the experimental data, calculates the sum of the square errors as the total error of the model and finally plots the diagram of the calculated model along with the experimental data.
Keywords
Computer Simulation, ion current, mass spectrometry

Subjects

Sollner, 1993- Guidance to age determinations by the U-Pb method, Laboratory for isotope-geochemistry at IAAG/Munchen.
Moore, L. J. et al., 1973- Trace determination of rubidium and strontium in silicate glass standard reference materials. Anal. Chem., 45,2384-2387.
J. H. Chen et al., 1975 Isotope lead investigations on the Allende Carbonaceous chondrite. Geochemica Cosmochemica Acta., 40, 635-643.
Richard Lee Armestrog, 1968- A model for the Evolution of Strontium and Lead Isotopes in a Dynamic Earth, Reviews of Geophysics, 6, 2., 175- 199.
Richard Lee Armestrog and steven M.Hein, 1972- Computer Simulation of Pb and Sr isotope evolution of the earth's crust. and upper manttle, Geochim Cosmochim Acta, 37, 1-18.
Khan. M. R.,1975- Proton Induced X-Ray Analysis, University of Aston, Birmingham.
Scientific Quarterly Journal of Geosciences
Volume 6, 21-22
Autumn & Winter 1997, vol. 6, No. 21-22
Winter 1997
Pages 40-49