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Showing posts with the label dark matter

Dark Matter and Spacecraft Flyby Anomalies

A number of sources[2][3] today reported on the possible detection of dark matter particles or WIMPs from the CDMS II experiment.  This is pretty slick for a number of reasons.  First, one of the research teams on the CDMS II experiment is located right here at Texas A&M.  Second, the other dark matter experiment that's mentioned in the nature blog, LUX, also has a team of researchers working here at A&M.   I was sitting in a professor's office discussing using liquid helium as a scintillator for the h-ray experiment a few days ago and he mentioned their use of liquid xenon as a scintillator on LUX, and now this!  For those interested, liquid xenon makes a better scintillator than liquid helium for a few reasons.  The most interesting of these to me is that helium is small enough to penetrate into a photomultiplier tube and ruin it's vacuum over time.  Basically, it's very hard to keep helium from penetrating containers. What about...