RE: Could this explian what Dark matter and Dark energy is?
June 11, 2016 at 4:16 pm
(This post was last modified: June 11, 2016 at 4:19 pm by Alex K.)
(June 11, 2016 at 3:25 pm)madog Wrote:(June 11, 2016 at 3:16 pm)Alex K Wrote: His baloon experiment ANITA may not be the biggest neutrino experiment, but it sure is very charming and a fascinating setup. Send a baloon in the upper atmosphere and use the polar ice to convert cosmic rays into radio. It's ingenious. ICE CUBE beats them all in coolness, of course.
Showing my ignorance. My understanding is that underground detectors are to filter out other particles that may interfere with any readings .... Using the ice sheet as a radio may increase the chance of detecting a neutrino, but won't that also increase the risk of detecting more interference from other particles?
Indeed. The cool thing is that they wait for Neutrinos to produce a coherent radio wave pulse coming out of the ice - no other particles can travel far through the ice to produce such an interaction - so, the source of the radio signal deep in the ice is basically shielded.
(source:http://www.phys.hawaii.edu/~anita/new/html/science.html)
(http://www.hawaii.edu/news/attachments/i..._1110l.png)
Note the radio receiver horns on the payload which look like a PA system.
Isn't this just lovely? And it's cheap as dirt compared to other experiments.
The fool hath said in his heart, There is a God. They are corrupt, they have done abominable works, there is none that doeth good.
Psalm 14, KJV revised edition