Measurement of radio wave reflection due to temperature rising from rock salt and ice irradiated by an electron beam for an ultra-high-energy neutrino detector

2012 ◽  
Author(s):  
Takahiro Tanikawa ◽  
Masami Chiba ◽  
Toshio Kamijo ◽  
Fumiaki Yabuki ◽  
Osamu Yasuda ◽  
...  
Keyword(s):  
Electron Beam ◽  
Radio Wave ◽  
Rock Salt ◽  
Wave Reflection ◽  
High Energy ◽  
Ultra High Energy ◽  
Neutrino Detector ◽  
High Energy Neutrino ◽  
Energy Neutrino

An ultra-high-energy-neutrino detector using rock salt and ice as detection media for radar method

2012 ◽  
Author(s):  
Masami Chiba ◽  
Toshio Kamijo ◽  
Takahiro Tanikawa ◽  
Fumiaki Yabuki ◽  
Osamu Yasuda ◽  
...  
Keyword(s):  
Rock Salt ◽  
High Energy ◽  
Ultra High Energy ◽  
Neutrino Detector ◽  
High Energy Neutrino ◽  
Radar Method ◽  
Energy Neutrino

MEASUREMENT OF ATTENUATION LENGTH FOR RADIO WAVE IN NATURAL ROCK SALT SAMPLES CONCERNING ULTRA HIGH ENERGY NEUTRINO DETECTION

2006 ◽  
Vol 21 (supp01) ◽  
pp. 25-29
Author(s):  
MASAMI CHIBA ◽  
YUSUKE WATANABE ◽  
OSAMU YASUDA ◽  
TOSHIO KAMIJO ◽  
YUICHI CHIKASHIGE ◽  
...  
Keyword(s):  
Radio Wave ◽  
Rock Salt ◽  
Large Mass ◽  
High Energy ◽  
Ultra High Energy ◽  
Neutrino Detector ◽  
Attenuation Length ◽  
Huge Number ◽  
Natural Rock ◽  
Detection Medium

Ultra high energy (UHE) neutrinos with the energy larger than 1015 eV, surely arrive at the earth with Greisen, Zatsepin, Kuz'min (GZK) effect, though the rate is very few. The rare call requires us to utilize a large mass (>10 Gton) of detection medium. UHE neutrino generates a huge number of unpaired electrons in rock salt. They would emit sensible radio wave by coherent Cherenkov (Askar'yan) effect. The longer attenuation length of radio wave in rock salt reduces the number of antennas required. Several rock salt samples including synthesized one are measured in attenuation length for radio wave transmission at 0.3 and 1.0 GHz. Some show attenuation length larger than 300 m, which indicate a possibility for constructing a salt neutrino detector.

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