Interactive user's application to Genie 2000 spectroscopy system for automation of hair neutron activation analysis

Full text: In recent years lower plants such as mosses or lichens and for arid countries bark and leaves of tree have been used as biomonitors in environmental studies. Alongside with plants the trace elemental human hair composition also has been used as an indicator of pollution of natural and industrial environments. Because of convenience, easy access, nondestruction of sampling, and also preservation of information for a long time period, human hair even more often and widely used in various researches. In the Institute of Nuclear Physics of the Academy of Sciences of the Republic of Uzbekistan hair trace element analysis in environment monitoring and mapping and in health status studies have been used. Scientist of activation analysis laboratory always has a lot of routine work on biological objects analysis, so they regularly improved applied nuclear techniques. At present one of such good work-out technique is consider a hair multielement instrumental neutron activation analysis using single comparator standard method. Since in frames of the 'Enhanced nuclear techniques for materials identification' STCU project, the Radioanalytical Center (RAC) was created in October 2004, for analysis such objects as metals and alloys, minerals and ores, hydrogeological samples, technological products, soils, fertilizers, biological samples, foodstuff, water, sediments, construction materials, as well as materials of unknown composition the unique equipment of RAC have been used. For example, human hair analysis has performed on the base of HP Ge-detector with high resolution gamma-spectrometer of Canberra Industries, Inc. Genie-2000 Spectroscopy System of Canberra spectrometers, represents the true state of the art in spectroscopy software platforms. Genie 2000 is a comprehensive set of capabilities for acquiring and analyzing spectra from Multichannel Analyzers (MCA). Its functions include MCA control, spectral display and manipulation, basic spectrum analysis and reporting. Genie 2000 software is available in several variations and with several layered optional packages. Genie 2000 Basic Spectroscopy and Gamma Analysis Software, which available in RAC permitting us automatically obtain nuclide identification report with all needed parameters. Any applications of Genie 2000 software have not possibility to calculate analyzed elements concentration. For automation this step of INAA by using Canberra Genie 2000 Spectroscopy System we developed user's 'Human hair analysis Application' software for single comparator standard method of hair INAA. The work with the developed Application for GENIE-2000 begins with the menu, which contains four items. 1. Copying of the data. 2. Data input. 3. Viewing, editing and analyzing of the data. 4. EXIT. The item 'Copying of the data' makes copying the entered values of special user parameters from one data source into another. It is very user-friendly. It is enough to him once in one data source to enter values of necessary parameters (nuclides name, γ-lines value, factors of transformation for various times of an irradiation and cooling). Further, with the help of procedure 'Copying of the data' he can transfer them to any other data source. The item 'Data input' is carried out with the help of Graphical Batch Tools function GBTPARS and specially developed set of Form Design Specification (FDS) files for this function. This developed Application works in interactive environment as a dialogue system with user and allows calculating required nuclides concentration in analyzed samples, separately for long-lived, middle-lived and short-lived nuclides. Using the Nuclide Library Editor and comprehensive standard libraries of Genie package we created three custom libraries: Stdlib.HairL, Stdlib.HairM, Stdlib.HairS, accordingly for long-, middle- and short-lived nuclides. After processing of the next data source the Application returns the user to the menu. From here he can continue data processing, having chosen the following data source, or through menu item EXIT to leave from the application. Thus, the user has opportunity to calculate various type required nuclides concentration (with sufficient algorithm for long-, middle- and short-lived nuclides) any number of data sources not leaving from the application. In report will be shown examples of some real human hair spectra's processing with developed Application by using Graphical Batch Tools, FDS files and REXX script language packaged in Genie 2000 Spectroscopy System. The studies are supported by STCU Grant Uzb-109. (author)