Energy loss of silver ions in gadolinium

Abstract

The energy loss of silver ions in metallic gadolinium foil at low velocities (2.7 -4.3)vo, where vp is the Bohr velocity, was measured with the Doppler shift technique. The results are about 20/p smaller than the predictions of a semiempirical formulation [

Stopping power of Au for silver ions at low velocities

“…In other measurements, such as the data for Nd in Pb from [10], show stopping power values larger than the ZBL predictions for all measured velocities. On the contrary, the Si in Al data from [11], and Ag in Gd [6], experimental data are below the ZBL predictions. These examples illustrate the difficulties for prediction of the stopping powers in this velocity region.…”

“…These corrections are described in detail in [7]. The average energy of the recoiling ions, before entering the stopper material, was determined by careful simulation of the processes involved, including the angular dependence of the Coulomb excitation process, solid angles and target thickness [6].…”

“…The experimental data we present here were obtained with two different techniques. In the first one the Doppler shift method, already employed in several other measurements [4][5][6], was used. In this technique, the mean energy of Coulomb excited target nuclei ( 107;109 Ag in the present case) after traversing the stopper foil, is measured by the determination of the Doppler shift in the energy of the c rays emitted by the decaying nuclear states.…”