Positron annihilation in oriented single crystals of calcite: Two photon angular correlation

Anisotropy of hole structures in oriente

Anisotropy of hole structures in oriented polycarbonate probed by two-dimensional angular correlation of annihilation radiation

✍ Y. C. Jean; Y. Rhee; Y. Lou; D. Shelby; G. L. Wilkes 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 802 KB

## Two-dimensional angular correlation of annihilation radiation (2D-ACAR) experiments have been performed on a uniaxially oriented polymer, bisphenol-A polycarbonate. The two-dimensional hole structures of unoriented and oriented polymers, determined from t,he momentum distributions, are found to