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Sub-barrier radioactive ion beam investigations using a new methodology and analysis for the stacked target technique (CROSBI ID 227669)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Fisichella, M. ; Shotter, A. C. ; Di Pietro, A. ; Figuera, P. ; Lattuada, M. ; Marchetta, C. ; Privitera, V. ; Romano, L. ; Ruiz, C. ; Zadro, Mile Sub-barrier radioactive ion beam investigations using a new methodology and analysis for the stacked target technique // Physical review. C, Nuclear physics, 92 (2015), 6; 064611-1-064611-16. doi: 10.1103/PhysRevC.92.064611

Podaci o odgovornosti

Fisichella, M. ; Shotter, A. C. ; Di Pietro, A. ; Figuera, P. ; Lattuada, M. ; Marchetta, C. ; Privitera, V. ; Romano, L. ; Ruiz, C. ; Zadro, Mile

engleski

Sub-barrier radioactive ion beam investigations using a new methodology and analysis for the stacked target technique

For low energy reaction studies involving radioactive ion beams, the experimental reaction yields are generally small due to the low intensity of the beams. For this reason, the stacked target technique has been often used to measure excitation functions. This technique offers considerable advantages since the reaction cross-section at several energies can be simultaneously measured. In a further effort to increase yields, thick targets are also employed. The main disadvantage of the method is the degradation of the beam quality as it passes through the stack due to the statistical nature of energy loss processes and any nonuniformity of the stacked targets. This degradation can lead to ambiguities of associating effective beam energies to reaction product yields for the targets within the stack and, as a consequence, to an error in the determination of the excitation function for the reaction under study. A thorough investigation of these ambiguities is reported, and a best practice procedure of analyzing data obtained using the stacked target technique with radioactive ion beams is recommended. Using this procedure a re-evaluation is reported of some previously published sub-barrier fusion data in order to demonstrate the possibility of misinterpretations of derived excitation functions. In addition, this best practice procedure has been used to evaluate, from a new data set, the sub-barrier fusion excitation function for the reaction Li-6+ Sn-120.

weakly-bound nuclei ; excitation-functions ; fusion reactions ; he-6 ; barrier ; breakup ; pb-206

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Podaci o izdanju

92 (6)

2015.

064611-1-064611-16

objavljeno

0556-2813

10.1103/PhysRevC.92.064611

Povezanost rada

Fizika

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