Statistics – Applications
Scientific paper
May 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981mnras.195..481h&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 195, May 1981, p. 481-484.
Statistics
Applications
Antineutrinos, Neutrinos, Particle Telescopes, Cryogenic Equipment, Polarization (Spin Alignment), Sensitivity
Scientific paper
A technique that allows directional discrimination in the detection of neutrinos (and antineutrinos) is described. It depends on the unique left- (right-) handed helicity of these particles and on efficient polarization of atomic nuclei in detector materials that undergo a Gamow-Teller (the change in I being equal to + or - 1) transition on absorbing a neutrino (or antineutrino). With modern cryogenic techniques and superconducting magnets, adequate nuclear polarization for necessarily massive neutrino detectors appears practical for astronomical applications. Detectors of this kind gain sensitivity over nondirectional devices in two distinct ways: First, the detector's interaction cross-section can be doubled through the polarization of the nuclei along the direction of the source in the sky; second, directional switching will permit discrimination against cosmic-ray-induced detector response, removing much of the uncertainty associated with currently operational devices.
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