Background subtraction of digital coincidence Doppler broadening spectra

C Y Xi,B J Ye, W Kong,H M Weng,X Y Zhou, R D Han

MEASUREMENT SCIENCE AND TECHNOLOGY（2005）

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摘要

A new method of subtracting the chance coincidence background is presented. The two-dimensional (21)) background spectrum is discussed in detail. We found that the Compton scattering boundary is not parallel to the axis in the 2D spectrum. The conclusion has been demonstrated by some experiments.

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关键词

positron annihilation,digital,chance coincidence,background

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