Abstract
The elastic recoil cross section for D(4He, D) 4He was determined at a recoil angle of 30° over an incident helium energy range from 2.6 to 7.4MeV. A thin solid target Ta/TiDx/Si used for cross section measurement was prepared by direct current magnetron sputtering, and it was so stable to ion beam bombardment that nearly no deuterium loss (less than 0.2%) exists over the whole experiment. A relative determination method is adopted in this measurement. It can avoid the error from the beam dose and the solid angle of the detectors and it is also free to direct measurement of D content in the film. The total uncertainty in the cross section determination is less than 5%.
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