Positron annihilation rates in materials
by Tran Dai Nghiep, Khuong Thanh Tuan, Ngo Danh Du
International Journal of Nuclear Energy Science and Technology (IJNEST), Vol. 3, No. 4, 2007

Abstract: The study of positron annihilation rate is one subject of a relatively new method of material structure analysis – positron annihilation spectroscopy. Polyethylene Terephthalate (PET) films have been studied by positron annihilation rate measurement. The correlation between annihilation rates and the PET film thickness was established. Similar studies were carried out for aluminium foils and water. The results give information on the probability of positron annihilation per unit of time and per unit of material thickness that is described by an explicit function of the energy transfer model.

Online publication date: Wed, 06-Feb-2008

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