The (11)B(p,n)(11)C Reaction: Measurements of Differential Cross Sections at Proton Energies between 3.1 and 4.5 MeV, and Applications to Depth Profiling
Abstract
Thick target neutron time-of-flight techniques have been used to study the 11B(p,n)11C reaction at proton energies from threshold to 4.5 MeV. Neutron time-of-flight spectra were obtained at laboratory angles of 0, 20, 31, 50, 69.8, 80.3, 90, 100, 114, 138.2 and 155 degrees, and converted to cross sections averaged over 10 KeV intervals in proton energy. Targets of polycrystalline boron and B2O3 were used. Boron concentrations in Si and SiO2 targets of otherwise known composition were determined using the 11B(p,n)11C reaction with neutron time-of-flight techniques. The concentration was determined by taking the ratio of neutron time-of-flight spectra from a pure B metal target and a target of unknown boron content. This technique was applied to a Si wafer implanted in the < 100 > direction with 200 KeV atoms.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 24, 1979
- Accession Number
- ADA074310
Entities
People
- Richard P. Ebright