Recoiling Ion-Channeling in Direct Dark Matter Detectors

Details Recoiling Ion-Channeling in Direct Dark Matter Detectors Recoiling Ion-Channeling in Direct Dark Matter Detectors

2012-01-22

arxiv.org/abs/1201.4560v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Talk presented at the DSU 2011 Conference, KITPC, Beijing, China, Sept 26-30, 2011. 8 pages, 14 figures, jpconf.cls and jpconf

Scientific paper

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.

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