The Search for Cold Dark Matter Using Germanium Detectors

Details The Search for Cold Dark Matter Using Germanium Detectors The Search for Cold Dark Matter Using Germanium Detectors

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992phdt........85c&link_type=abstract

Thesis (PH.D.)--UNIVERSITY OF SOUTH CAROLINA, 1992.Source: Dissertation Abstracts International, Volume: 53-11, Section: B, page

Physics

Nuclear Physics

Cosmogenic Radioisotopes, Wimps, Diurnal Modulation

Scientific paper

Data from two ultralow-background underground Germanium detectors are used in a search for Cold Dark Matter (CDM) particles. The low-energy background is extensively studied, paying especial attention to the cosmogenic radioisotopes produced in neutron spallation reactions. Theoretical predictions for the production rates of some isotopes of interest are obtained. Comparison with the observed rates in different detectors yields a good agreement between theory and experiment. Limits are extracted on the maximum amount of cosmogenic Tritium present in the detectors. We present exclusion plots for WIMPS (Weakly Interacting Massive Particles) using conventional techniques on the data at hand. We then study the possibility of observing a unique signature from CDM by considering the effects of elastic scattering of candidate particles on the constituent nuclei of the Earth. The geology, nuclear physics, the Earth's orientation, rotation and trajectory through the galactic halo are included, as well as the characteristic velocity distribution of CDM in the halo. Observable diurnal modulations in the detection rates and energy spectra are predicted for different particle candidates and are sought for in the data from one of the detectors. Predictions on the sensitivity of this new method in optimal geographical conditions are presented.

Affiliated with

Also associated with

No associations

Rating

The Search for Cold Dark Matter Using Germanium Detectors 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 Search for Cold Dark Matter Using Germanium Detectors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Search for Cold Dark Matter Using Germanium Detectors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-940015