Evaporation residues produced in spallation of 208Pb by protons at 500 MeV
Language
en
Article de revue
This item was published in
Nuclear Physics A. 2006, vol. 768, p. 1-21
Elsevier
English Abstract
The production cross sections of fragmentation–evaporation residues in the reaction Pb+p at Click to view the MathML source have been measured using the inverse-kinematics method and the FRS spectrometer (GSI). Fragments ...Read more >
The production cross sections of fragmentation–evaporation residues in the reaction Pb+p at Click to view the MathML source have been measured using the inverse-kinematics method and the FRS spectrometer (GSI). Fragments were identified in nuclear charge using ionisation chambers. The mass identification was performed event-by-event using the Bρ–TOF–ΔE technique. Although partially-unresolved ionic charge states induced an ambiguity on the mass of some heavy fragments, production rates could be obtained with a high accuracy by systematically accounting for the polluting ionic charge states. The contribution of multiple reactions in the target was subtracted using a new, partly self-consistent code. The isobaric distributions are found to have a shape very close to the one observed in experiments at higher energy. Kinematic properties of the fragments were also measured. The total and the isotopic cross sections, including charge-pickup cross sections, are in good agreement with previous measurements and models. The data are discussed in the light of previous spallation measurements, especially on lead at 1 GeV.Read less <
English Keywords
Spallation reactions
Isotopic production cross sections
Accelerator-driven system
Evaporation residues
Multiple reactions in target
Charge-pickup cross sections
Origin
Hal imported