ausblenden:
Schlagwörter:
Astrophysics, Instrumentation and Methods for Astrophysics, astro-ph.IM, Physics, Instrumentation and Detectors, physics.ins-det
Zusammenfassung:
We report on the response of liquid xenon to low energy electronic recoils
below 15 keV from beta decays of tritium at drift fields of 92 V/cm, 154 V/cm
and 366 V/cm using the XENON100 detector. A data-to-simulation fitting method
based on Markov Chain Monte Carlo is used to extract the photon yields and
recombination fluctuations from the experimental data. The photon yields
measured at the two lower fields are in agreement with those from literature;
additional measurements at a higher field of 366 V/cm are presented. The
electronic and nuclear recoil discrimination as well as its dependence on the
drift field and photon detection efficiency are investigated at these low
energies. The results provide new measurements in the energy region of interest
for dark matter searches using liquid xenon.
