Channeling Effects in Direct Dark Matter Detectors
Cosmology and Nongalactic Astrophysics
2015-05-20 v1 Other Condensed Matter
Instrumentation and Detectors
Abstract
The channeling of the ion recoiling after a collision with a WIMP changes the ionization signal in direct detection experiments, producing a larger signal than otherwise expected. We give estimates of the fraction of channeled recoiling ions in NaI (Tl), Si and Ge crystals using analytic models produced since the 1960's and 70's to describe channeling and blocking effects. We find that the channeling fraction of recoiling lattice nuclei is smaller than that of ions that are injected into the crystal and that it is strongly temperature dependent.
Cite
@article{arxiv.1009.5046,
title = {Channeling Effects in Direct Dark Matter Detectors},
author = {Nassim Bozorgnia},
journal= {arXiv preprint arXiv:1009.5046},
year = {2015}
}
Comments
8 pages, 12 figures, To appear in the Proceedings of the sixth International Workshop on the Dark Side of the Universe (DSU2010) Leon, Guanajuato, Mexico 1-6 June 2010