Speaker
Description
We report analysis results on a LiF Experiment for keV Sterile Neutrino Search (LiFE-SNS) based on tritium beta decay measurement at mK temperatures. We use LiF crystals with $^3$H embedded through the Li(n,$\alpha$)$^3$H process. Magnetic microcalorimeters, one of the high-resolution detector technologies, are adopted to measure the amount of the energy deposited into the crystal absorber from $^3$H beta decays.
A full spectral measurement was conducted using two detector modules, each activated with $^3$H at approximately 30 Bq, over a four-month data taking period. In this conference, we present analysis results, including a comparison of the measured spectrum with the expected $^3$H spectral shape and the results of the search for keV-scale sterile neutrinos.
