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Directional Dark Matter Searches with Carbon Nanotubes
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A new solution to the problem of dark matter directional detection might come from the use of large arrays of aligned carbon nanotubes. We calculate the expected rate of carbon ions channeled in single-wall nanotubes once extracted by the scattering with a massive dark matter particle. Depending on its initial kinematic conditions, the ejected Carbon ion may be channeled in the nanotube array or stop in the bulk. The orientation of the array with respect to the direction of motion of the Sun has an appreciable effect on the channeling probability. This provides the required anisotropic response for a directional detector.
Forward citations
Cited by 2 Pith papers
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Hydrogenated carbon structures as directional sub-GeV dark matter detectors
Hydrogenated carbon sheets and nanotube arrays could detect dark matter as light as ~1 MeV by counting protons knocked loose from hydrogen atoms.
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Optimisation of amplification and gas mixture for directional Dark Matter searches with the CYGNO/INITIUM project
For a He:CF4 optical TPC, an extra electrode below the last GEM doubles the light yield, and 1.6% SF6 enables negative-ion drift with diffusion as low as 45 µm/√cm.
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