NASA NTRS · 19920000590
Slow-Positron Generator For Studying Polymer Films
Abstract
Aspects of molecular structures probed by positron-annihilation spectroscopy (PAS). Slow-positron-beam generator suitable for PAS measurements in thin polymer films. Includes Na22 source of positrons and two moderators made of well-annealed tungsten foil. With proper choice of voltage, positrons emitted by inward-facing surfaces of moderators made to stop in polymer films tested.
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Singh, Jag J., St. Clair, Terry L., Eftekhari, Abe. 1992-10-01. Slow-Positron Generator For Studying Polymer Films. https://ntrs.nasa.gov/citations/19920000590
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