RDMLNuclear Activation Analysis System          

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Neutron Activation Analysis System (NAAS):

Neutron Activation Analysis (NAA) is one of the most sensitive analytical methods for multi-element analysis. The peak identification and concentration calculations of NAA require comprehensive data analysis and are at risk of human error. To reduce the workforce, save time, and minimize any man-induced mistakes, a web application — Neutron Activation Analysis System (NAAS) — is designed, compiled, and implemented to expedite this process. SQL, asp.net, and c# scripts are applied in developing the program. The operation mode of NAAS includes information exchange among web servers, database engines, and client computers. Based on the peak information of the gamma-ray spectra and assisted by the integrated NAA library on the server, the web application automatically identifies radioactive isotopes in the samples and calculates elemental concentrations. Outputs of the application are compared with traditional NAA calculations with excellent consistency. With minimum input from the user, the online program has proven to be fast, reliable, and easily accessible via the internet. The web application is exceptionally user-friendly for these colleagues who are interested in NAA, but not knowledgeable about the concentration calculations and corresponding nuclear reactions.

The thermal neutron irradiation of samples mostly was 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 (*.xlsx) format (download the peak file sample )

2.       Concentration (ppm) file of the reference in excel (*.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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