J. Kwofie

New positron annihilation spectroscopy techniques for thick materials

F. A. Selim, D. Wells, J. F. Harmon et al. · Radiation Physics and Chemistry · 2003 · 32 citations

Physics, Electron Spectroscopy, Natural Sciences +4

Bremsstrahlung-induced highly penetrating probes for nondestructive assay and defect analysis

F. A. Selim, D. Wells, J. F. Harmon et al. · Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment · 2002 · 27 citations

Materials Science, Engineering, Analytical Instrumentation +6

Doppler broadening measurements of positron annihilation using bremsstrahlung radiation

F. A. Selim, D. Wells, J. F. Harmon et al. · Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms · 2002 · 22 citations

Positron Annihilation, Nuclear Physics, Physics +4