Recoiling Ion-Channeling in Direct Dark Matter Detectors
arXiv:1201.4560 · doi:10.1088/1742-6596/384/1/012007
Abstract
The channeling of the recoiling nucleus in crystalline detectors after a WIMP collision would produce a larger scintillation or ionization signal in direct detection experiments than otherwise expected. I present estimates of channeling fractions obtained using analytic models developed from the 1960's onwards to describe channeling and blocking effects. We find the fractions to be too small to affect the fits to potential WIMP candidates. I also examine the possibility of detecting a daily modulation of the dark matter signal due to channeling.
Talk presented at the DSU 2011 Conference, KITPC, Beijing, China, Sept 26-30, 2011. 8 pages, 14 figures, jpconf.cls and jpconf11.clo necessary to typeset
References in corpus (7)
- Possible implications of the channeling effect in NaI(Tl) crystals
- Observations of annual modulation in direct detection of relic particles and light neutralinos
- XENON10/100 dark matter constraints in comparison with CoGeNT and DAMA: examining the Leff dependence
- Channeling in direct dark matter detection I: channeling fraction in NaI (Tl) crystals
- Channeling Effect and Improvement of the Efficiency of Charged Particle Registration with Crystal Scintillators
- Channeling in direct dark matter detection II: channeling fraction in Si and Ge crystals
- Searching direction dependent daily modulation in dark matter detectors