Sains Ma1aysiana 25(2): 27-34 (1996)                                                                        Sains Fizis dan Gunaan/

                                                                                                                                       Physical and Applied Sciences

 

Fitted Curve Paramaters for the Efficiency

of a Coaxial HPGe Detector

 

 

Supian bin Samat

Jabatan Fizik

Universiti Kebangsaan Malaysia

43600 UKM Bangi Selangor D.E. Malaysia

 

 

ABSTRACT

 

Using Ngraph software, the parameters of various functions were deter­mined by least squares analysis of fits to experimental efficiencies, εf of a coaxial HPGe detector for gamma rays in the energy range 59 keV to 1836 keV. When these parameters had been determined, their reliability was tested by the calculated goodness-of-fit parameter χ2cal It is shown that the function, where n = 3, gives satisfactory results.

 

ABSTRAK

 

Menggunakan perisian Ngraph, parameter pelbagai fungsi ditentukan dengan kaedah penyesuaian kuasa-dua terkecil untuk kecekapan ujikaji, εf dalam julat tenaga sinar gama 59 ke V ke 1836 ke V untuk satu pengesan HPGe sepaksi. Setelah parameter ini ditentukan, kebolehpercayaan yang fungsi,  dimana n = 3 memberikan keputusan yang memuaskan.

 

 

RUJUKAN/REFERENCES

 

Adams, F. & Dams. 1970. Applied Gamma-ray Spectromentry. Oxford: Pergamon Press.

Debertin, K. & Helmer, R.G: 1988. Gamma and X-ray Spectrometery with Semicounductor detectors. Amsterdam: North-Holland, p. 219-224.

IAEA. 1989. Measurement of Radionuclides in Food and the Environment – A guitebook. Technical Report Series No: 295 Vienna, Austria.

Ishizka, S. 1990-91. NGRAPH (Version 5.30) - User's Manual. NEC Fundamental Res. Labs., Ibaraki, Japan.

Supian bin Samat, Taki, M., Oi, Y., Manabe, I., Yoshida, M. & Minami, K. 1994. Characteristics of Prepared Gamma-ray Calibration Source for Radioactivity Measurements of Environmental and Radiation Control Areas. JAERI M Research Report (has been accepted for publication).

Supian bin Samat & C. J. Evans. 1992. Statistics and Nuclear Counting Theory Problems and Solutions. Malaysia: Universiti Pertanian Malaysia Press.

Taki, M., Y., Supian bin Samat, Yoshida, M., Manabe, I & Minami, K. 1994. Characteristics of Prepared Gamma-ray Calibration Source for Radioactivity Measurements of Environmental and Radiation Control Areas. JAERI M Research Report (has been accepted for publication).

Taki, M., Oi, Y., Supian bin Samat, Yoshida, M., Manabe, I. & Minami, K. 1994. Characteristics of Prepared Gamma-ray Calibration Source for Radioactivity Measurements of Environmental and Radiation Control Areas. Proc. of Fall Meeting of the Atomic Energy Society of Japan, Hokkaido, N44, p. 296.

 

 

 

 

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