The DRIFT Directional Dark Matter Detector and First Studies of the Head-Tail Effect

Details The DRIFT Directional Dark Matter Detector and First Studies of the Head-Tail Effect The DRIFT Directional Dark Matter Detector and First Studies of the Head-Tail Effect

2007-11-21

arxiv.org/abs/0711.3341v2

Physics

Instrumentation and Detectors

To appear in the proceedings of Dark 2007 Sixth International Heidelberg conference on "Dark Matter in Astro & Particle Physic

Scientific paper

Measurement of the direction of the elastic nuclear recoil track and ionization charge distribution along it, gives unique possibility for unambiguous detection of the dark matter WIMP particle. Within current radiation detection technologies only Time Projection Chambers filled with low pressure gas are capable of such measurement. Due to the character of the electronic and nuclear stopping powers of low energy nuclear recoils in the gas, an asymmetric ionization charge distribution along their tracks may be expected. Preliminary study of this effect, called Head-Tail, has been carried out here using the SRIM simulation program for Carbon and Sulfur in 40 Torr carbon disulfide, as relevant to the DRIFT detector. Investigations were focused on ion tracks projected onto the axis of the initial direction of motion in the energy range between 10 and 400 keV. Results indicate the likely existence of an asymmetry influenced by two competing effects: the nature of the stopping power and range straggling. The former tends to result in the Tail being greater than the Head and the latter the reverse. It has been found that for projected tracks the mean position of the ionization charge flows from 'head' to 'tail' with the magnitude depending on the ion type and its energy.

Affiliated with

Also associated with

No associations

Rating

The DRIFT Directional Dark Matter Detector and First Studies of the Head-Tail Effect does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The DRIFT Directional Dark Matter Detector and First Studies of the Head-Tail Effect, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The DRIFT Directional Dark Matter Detector and First Studies of the Head-Tail Effect will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-414379