Igor Jovanovic

Profile Information
Name
Professor Igor Jovanovic
Institution
University of California-Berkeley
Position
Professor
h-Index
ORCID
0000-0003-0573-3150
Publications:
"Measurement of ionization produced by 254  eVnr nuclear recoils in germanium" Igor Jovanovic, Physical Review D Vol. 110 2024 083043 Link
Ionization produced by low-energy nuclear recoils is among the primary direct signatures of dark matter interactions. Despite the urgency of dark matter detection and the recent measurements of coherent elastic neutrino-nucleus scattering, detector response to nuclear recoils is not well characterized in the keVnr and sub−keVnr regime across a variety of materials. We have reperformed a measurement of the ionization produced by monoenergetic 254  eVnr nuclear recoils in Ge with improved digital electronics and additional systematic studies. Our results indicate an ionization yield of 64±8  eVee corresponding to a quenching factor of 25%±3%, greater than the 14% predicted by the Lindhard model. This ionization enhancement could greatly improve the sensitivity of high-purity Ge detectors in dark matter detection and measurement of neutrinos via coherent scattering.
NSUF Articles:
NSUF awards 24 Rapid Turnaround Experiment proposals - Approximately $1.42M has been awarded. Wednesday, February 8, 2023 - Calls and Awards