ARSLNuclear Activation Analysis System

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Instrumental Neutron Activation Analysis (INAA) is one of the most sensitive analytical techniques used for the quantitative multi-element analysis. The peak identification and concentration calculation of INAA require extensive data analysis and are susceptible to error. To save time, reduce workforce, and minimize human error, a web-based computer program — Nuclear Activation Analysis System (NAAS) — is designed, built and implemented at the Radiation Data Mining Laboratory (RDML) to automate this process. The program is developed by C++, SQL, and technology. The operation mode of NAAS includes information exchange among web server, database engines, and client computers. Based on the peak information of the spectra, the program automatically identifies elements in the samples with the support of integrated INAA library. The program automatically calculates elemental concentrations and corresponding uncertainties according to the error propagation formulas. Results from this software are compared with standard INAA calculations with excellent consistency. With minimum input from the user, the software has proven to be fast, reliable and easily accessible via the internet.

The thermal neutron irradiation of samples is conducted by the PULSTAR reactor in the North Carolina State University (our parter of neutron activation and student education).

The program is particularly user-friendly for these colleagues who are interested in neutron activation analysis, but not knowledgeable about the underneath details of the nuclear reactions as well as the corresponding activation calculations.

Before using the system, you should have the files and the information below:

1.       Peak reading files in excel 2007 (*.xlsx) format (download the peak file sample )

2.       Concentration (ppm) file of the reference in excel 2007 (*.xlsx) format (download the ppm file sample).

3.       Other information, such as the mass, the time(s), the monitor data, etc.

4.       The method one used for monitoring the photon flux (the analysis without monitor, the external monitor method or the internal monitor method).

If you have all the files and the information above, click next.

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