Isotopic and velocity distributions of 83 Bi produced in charge - pickup reactions of at 1 A GeV Pb 20882
نویسندگان
چکیده
Isotopically resolved cross sections and velocity distributions have been measured in charge-pickup reactions of 1 A GeV Pb with proton, deuterium and titanium target. The total and partial charge-pickup cross sections in the reactions Pb + H and Pb + H are measured to be the same in the limits of the error bars. A weak increase in the total charge-pickup cross section is seen in the reaction of Pb with the titanium target. The measured velocity distributions show different contributions – quasi-elastic scattering and ∆-resonance excitation to the charge-pickup production. Data on total and partial charge-pickup cross sections from these three reactions are compared with other existing data and also with model calculations based on the coupling of different intra-nuclear cascade codes and an evaporation code.
منابع مشابه
Velocity distributions of Bi produced in charge-pickup reactions of Pb
In nuclear charge-pickup reactions at projectile energies well above the Fermi energy there are two processes mostly responsible for the increase of the nuclear charge of the projectile [1]: A quasi-elastic collision between a target proton and a projectile and the excitation of a target or a projectile nucleon into the ∆(1232)-resonance state and its subsequent decay. These two mechanisms popu...
متن کاملar X iv : n uc l - ex / 0 50 30 21 v 1 2 9 M ar 2 00 5 Evaporation residues produced in spallation of 208 Pb by protons at 500 A MeV
The production cross sections of fragmentation-evaporation residues in the reaction Pb+p at 500A MeV 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 − ∆E technique. Although partially-unresolved ionic charge states ...
متن کامل- ex / 0 50 30 21 v 3 9 D ec 2 00 5 Evaporation residues produced in spallation of 208 Pb by protons at 500 A MeV
The production cross sections of fragmentation-evaporation residues in the reaction Pb+p at 500A MeV 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 −∆E technique. Although partially-unresolved ionic charge states in...
متن کامل- ex / 0 50 30 21 v 2 3 N ov 2 00 5 Evaporation residues produced in spallation of 208 Pb by protons at 500 A MeV
The production cross sections of fragmentation-evaporation residues in the reaction Pb+p at 500A MeV 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 −∆E technique. Although partially-unresolved ionic charge states in...
متن کاملPrimary-residue production cross sections and kinetic energies in 1 A GeV Pb on deuteron reactions
The production cross sections and the kinematical properties of primary residual nuclei have been studied in the reaction Pb (1 A GeV) + d. Isotopic distributions were measured for all elements from titanium (Z=22) to lead (Z=82). The measured kinematical properties of the residues were also used to disentangle the relevant reaction mechanisms, spallation-evaporation and spallationssion. The fr...
متن کامل