METHOD OF ANALYSING POSITRON ANNIHILATION LIFETIME SPECTRUM WITH A MULTI EXPONENTIAL CURVE FITTING

WANG Shu-Ying

Chinese Physics C> 1983, Vol. 7> Issue(4) : 408-414

METHOD OF ANALYSING POSITRON ANNIHILATION LIFETIME SPECTRUM WITH A MULTI EXPONENTIAL CURVE FITTING

WANG Shu-Ying ^,

Institute of High Energy Physics, Academia Sinica

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A method to solving a few practical problems in analysing lifetime spectrum is searched through analysis of the lifetime specrtra of e⁺ annihilation in amorphous alloy samples and other ones. It includes the selection of the starting point of fitting data one by one above a certain time range on the right of the spectrum peak, the normolazation of the sum of relative intensities of the lifetime components by adjusting the zero time position, and finally testing the tail component to diminish the effect on analysis of the end position of the fitting data.

References

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WANG Shu-Ying. METHOD OF ANALYSING POSITRON ANNIHILATION LIFETIME SPECTRUM WITH A MULTI EXPONENTIAL CURVE FITTING[J]. Chinese Physics C, 1983, 7(4): 408-414.

WANG Shu-Ying. METHOD OF ANALYSING POSITRON ANNIHILATION LIFETIME SPECTRUM WITH A MULTI EXPONENTIAL CURVE FITTING[J]. Chinese Physics C, 1983, 7(4): 408-414. shu

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Received: 1900-01-01
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沈阳化工大学材料科学与工程学院沈阳 110142

METHOD OF ANALYSING POSITRON ANNIHILATION LIFETIME SPECTRUM WITH A MULTI EXPONENTIAL CURVE FITTING

Corresponding author: WANG Shu-Ying,

Institute of High Energy Physics, Academia Sinica

Received Date: 1900-01-01

Accepted Date: 1900-01-01

Available Online: 1983-08-05

Abstract: A method to solving a few practical problems in analysing lifetime spectrum is searched through analysis of the lifetime specrtra of e⁺ annihilation in amorphous alloy samples and other ones. It includes the selection of the starting point of fitting data one by one above a certain time range on the right of the spectrum peak, the normolazation of the sum of relative intensities of the lifetime components by adjusting the zero time position, and finally testing the tail component to diminish the effect on analysis of the end position of the fitting data.

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METHOD OF ANALYSING POSITRON ANNIHILATION LIFETIME SPECTRUM WITH A MULTI EXPONENTIAL CURVE FITTING

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