Measurement of residual nucleus cross sections
نویسندگان
چکیده
The production of residual nuclei in p + Fe collisions has been measured at GSI on the FRS facility by means of the reverse kinematic techniques at 300, 500, 750, 1000 and 1500 MeV/A. The cross-sections larger than 0.01 mb of all isotopes with Z larger than 8 have been obtained. Velocity distributions were also measured. Comparisons to models describing spallation reactions and some empirical formulae often used in astrophysics are presented. These data are directly used to calculate impurety production and DPAs in a thin window as foreseen in spallation sources or accelerator-driven systems.
منابع مشابه
Consistent Treatment of Propagator Modifications in Elastic Nucleon-Nucleus Scattering within the Spectator Expansion
The theory of the elastic scattering of a nucleon from a nucleus is presented in the form of a Spectator Expansion of the optical potential. Particular attention is paid to the treatment of the free projectile− nucleus propagator when the coupling of the struck target nucleon to the residual target must be taken into consideration. First order calculations within this framework are shown for ne...
متن کاملExperimental cross section of 144 Sm ( α , γ ) 148 Gd and implications for the p - process
The cross section of the Sm(α, γ)Gd reaction has been measured at bombarding energies in the 10.513.4MeV range using an activationmethod based on the off-line α-activity measurement of the Gd residual nucleus. The long measuring time of the α-decay has required the use of etched track detectors. The resulting cross sections and astrophysical S-factors are compared to new statistical model calcu...
متن کاملth / 0 20 30 09 v 1 5 M ar 2 00 2 QUASI FREE 238 U ( e , e ′ f ) - CROSS SECTION IN MACROSCOPIC - MICROSCOPIC APPROACH
We present the result of a theoretical study of inclusive quasi free electrofission of 238U. The off-shell cross sections for the quasi free reaction stage have been calculated within the Plane Wave Impulse Approximation (PWIA), using a Macroscopic -Microscopic description of the proton and neutron single particle momentum distributions. Electron wave function distortion corrections were includ...
متن کاملDirect excitations of He+ and Li++ ions by collisions with protons or antiprotons
The impact parameter formalism of the single-center close-coupling, first-, and second-order Born approximations have been applied to investigate direct excitations of Helium He+(2s) and Lithium Li++(2s) ions by colliding with protons or antiprotons. The total 3s, 3p, and 3d scaled excitation cross sections are calculated in the scaled impact energy region (2 to 1000 keV). The present work aims...
متن کاملExotic Properties of Light Nuclei and Their Neutron Capture Cross Sections
We have investigated the implications of the neutron halo configuration, observed in the ground-state of some neutron-rich light nuclei, on neutron radiative transition processes. In particular, we have studied the influence of the neutron halo on the direct radiative capture (DRC) process. The energy dependence as well as the strength of E1 emission due to incident p-wave neutrons is strongly ...
متن کامل