A compton polarimeter constructed with a large Si(Li) scatterer and two Ge analysers

Abstract A Compton polarimeter has been constructed with a large Si(Li) scatterer and two Ge analysers. Using a Monte Carlo method the characteristics of the Si(Li) scatterer were compared with a Ge scatterer having the same size. The calculations show that the Si(Li) scatterer is very suited for low-energy γ-rays below 300 keV. The polarization sensitivity has been measured in the range of 0.1–1.3 MeV. The usefulness of the polarimeter is demonstrated in the measurement of the linear polarization of the 176 keV transition in 125Te.

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