Magnetic guidance of charged particles
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Publication:316013
DOI10.1016/J.PHYSLETB.2015.07.004zbMATH Open1345.78007arXiv1501.05131OpenAlexW2112496087MaRDI QIDQ316013
Publication date: 26 September 2016
Published in: Physics Letters B (Search for Journal in Brave)
Abstract: Many experiments and devices in physics use static magnetic fields to guide charged particles from a source onto a detector, and we ask the innocent question: What is the distribution of particle intensity over the detector surface? One should think that the solution to this seemingly simple problem is well known. We show that, even for uniform guide fields, this is not the case and present analytical point spread functions (PSF) for magnetic transport that deviate strongly from previous results. The "magnetic" PSF shows unexpected singularities, which were recently also observed experimentally, and which make detector response very sensitive to minute changes of position, field amplitude, or particle energy. In the field of low-energy particle physics, these singularities may become a source of error in modern high precision experiments, or may be used for instrument tests, for instance in neutrino mass retardation spectrometers.
Full work available at URL: https://arxiv.org/abs/1501.05131
charged-particle spectroscopyleptonicmagneto-optical devicesneutrinosneutronsnuclear tests of fundamental interactions and symmetriesradiative decayssemileptonic
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