Energy spectral analysis is an important method for applications in earth science

environmental science

and other fields of research. In this paper

we introduce a new spectral analysis system based on LabVIEW. By wavelet analysis and Gaussian fitting

functions are realized to smooth

identify and scale the peaks of an α- or γ-ray spectrum. Concentrations of the radon gas

and the uranium

thorium and potassium radionuclides

are calculated. By the virtual instrument technology based on LabVIEW

one is able to make full use of computer hardware resource and improve the processing capacity of the system with reduced costs. The system

with a user-friendly interface

can be widely used in applications of mineral analysis

building material analysis

environmental assessment of the radiation

and many other occasions.