Stripping Cross Research Articles

The knockout reaction of 15C on a 9Be target at intermediate energies

In this work, neutron knockout reactions of 15C on a 9Be target at energy 103 and 250 MeV/nucleon are studied. Using the Eikonal approximation of the Glauber model, total neutron removal cross sections, the stripping and diffractive cross sections as well as 14C longitudinal momentum distributions are determined in both 15C ground state and exited states of the wave function. We compared the results of our calculations with the available experimental data obtained recently. The calculated cross sections of 15C and 14C reactions, as well as the momentum distribution are in relatively good agreement with available data.

Analysis of Deuteron Breakup and Induced Activation on Medium Nuclei

An extended analysis of the nuclear reaction mechanisms involved within deuterons interaction with Co and Nb is presented. First, the available elastic-scattering data analysis provided the optical potential for reaction cross sections calculations. An increased effort has been devoted to the breakup mechanism, both the elastic breakup and the breakup fusion contributions to the different activation cross sections being carefully considered. Next, the direct reaction contributions, namely the stripping and pick-up reaction cross sections have been calculated. Finally, the preequilibrium and compound-nucleus cross-section calculation, corrected for the breakup and stripping decrease of the total reaction cross section, completed the deuteron activation cross-section analysis. The overall agreement between the measured and calculated deuteron activation cross sections proves the adequacy of nuclear mechanisms suite.

Atomic charge exchange between fast helium ions and targets from carbon to bismuth at beta =0.36.

Equilibrium charge-state distributions for singly and doubly ionized [sup 3]He ions of energy [ital E]([sup 3]He)=200 MeV ([beta]=0.36) have been measured for atomic targets ranging from carbon to bismuth ([ital Z]=6,14,28,40,50,67,73,83). A magnetic spectrometer was used to simultaneously measure the rate of [sup 3]He[sup +] ions and the current of the incident beam of [sup 3]He[sup 2+] ions. The ratio of the fraction of ions [ital Y]([sup 3]He)[sup +]/[ital Y]([sup 3]He[sup 2+]) was found to increase from 3[times]10[sup [minus]9] for [ital Z]=6 to 2[times]10[sup [minus]7] for [ital Z]=83. Very good agreement with the experimental ratios was obtained for calculated ratios based on theoretical stripping (ionization) and capture cross sections. The cross sections are dominated by capture from [ital K] orbits only for atoms up to about [ital Z]=25. For target atoms with high [ital Z], contributions up to principal quantum numbers [ital n]=4 ([ital N] orbits) must be included.

Alignment effects in relativistic deuteron-nucleus stripping reactions

Calculates stripping, absorption and total cross sections for relativistic deuteron-nucleus collisions and their dependence on the deuteron alignment. A large fraction of the alignment dependence is due to eclipse terms.

Stripping and Pick-Up Differential Cross Sections

Stripping and Pick-Up Differential Cross Sections