8 AgReO4 microcalorimeter array for the direct detection of the neutrino mass

Details 8 AgReO4 microcalorimeter array for the direct detection of the neutrino mass 8 AgReO4 microcalorimeter array for the direct detection of the neutrino mass

Dec 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000spie.4140..402a&link_type=abstract

Proc. SPIE Vol. 4140, p. 402-406, X-Ray and Gamma-Ray Instrumentation for Astronomy XI, Kathryn A. Flanagan; Oswald H. Siegmund;

Astronomy and Astrophysics

Astronomy

Scientific paper

We are presenting our recent developments to measure the electron antineutrino mass by studying the 187Re (beta) - spectrum end-point with high resolution thermal detectors. We will discuss the preliminary results of an array of 8 bolometers made up of AgReO4 absorbers (2.309 mg of total mass corresponding to a total 187Re active mass of about 0.905 mg of with an expected (beta) total rate of about 1.3 Hz). Their risetime of 0.7 - 1.2 ms together with their energy resolution, ranging between 21 eV and 26 eV at 1.5 KeV, should allow to set a limit of about 10 - 12 eV after one year of real time measurements.

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