Topic
Doppler broadening
About: Doppler broadening is a research topic. Over the lifetime, 5509 publications have been published within this topic receiving 92552 citations.
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TL;DR: In this article, the authors used an absorption cell in front of a Lyman-α detector flown in a rocket at White Sands to study the Lyman α night-sky glow.
59 citations
TL;DR: Plasma radiation analyzed by spectral line broadening theory as relaxation of excited atom, noting frequency dependent width and shift operators as mentioned in this paper. But this is not the case in the case of nuclear magnetic resonance.
Abstract: Plasma radiation analyzed by spectral line broadening theory as relaxation of excited atom, noting frequency dependent width and shift operators
59 citations
TL;DR: The annihilation characteristics of a monoenergetic beam of positrons, after implantation in Si with a 350nm overlayer of SiO2, were measured as a function of mean implantation depth as discussed by the authors.
Abstract: The annihilation characteristics of a monoenergetic beam of positrons, after implantation in Si with a 350‐nm overlayer of SiO2, were measured as a function of mean implantation depth. Positrons implanted overlapping the SiO2/Si interface were observed to decay from a state with properties distinctively different from the state in bulk Si and the thermally grown SiO2, i.e., a positron interface state. The momentum distribution of the annihilating positron‐electron pair, as observed in the Doppler broadening of the annihilation line, is much broader for this state than for either bulk Si or SiO2, in contrast to previously observed localized positron states in solids and at surfaces which show a narrower distribution.
59 citations
TL;DR: In this article, the authors compared results obtained with poloidal and toroidal limiters and discussed general problems of plasma edge physics which are independent of the limiter configuration, showing that a significant steepening of the scrape-off layer (SOL) occurs close to the main limiter, leading to a small heat load e-folding length of 5-8 mm.
59 citations
TL;DR: In this paper, the effect of the erbium content on the emission intensity of the 4 I 13/2 → 4 I 15/2 transition as well as its lifetime was investigated.
59 citations