Doppler-broadening measurements of positron annihilation with high-momentum electrons in pure elements
نویسندگان
چکیده
منابع مشابه
Doppler broadening of in-flight positron annihilation radiation due to electron momentum.
We report the first observation of electron momentum contributions to the Doppler broadening of radiation produced by in-flight two-photon annihilation in solids. In these experiments an approximately 2.5 MeV positron beam impinged on thin polyethylene, aluminum, and gold targets. Since energetic positrons easily penetrate the nuclear Coulomb potential and do not cause a strong charge polarizat...
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ژورنال
عنوان ژورنال: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
سال: 2002
ISSN: 0168-583X
DOI: 10.1016/s0168-583x(02)00953-9