2007/10/18 by Johannes Elbs, J. Elbs, Yu. M. Bunkov +7 · 4 citations
Physics and Astronomy · #Atomic and Subatomic Physics Research #Bolometer #Dark Matter and Cosmic Phenomena #Dark matter #Detector #Event (particle physics) #Pulse (music) #Quantum, superfluid, helium dynamics #Recoil #Superfluidity #Thermalisation #physics.ins-det
paper · pdf · doi:10.1007/s10909-007-9603-7
published in Journal of Low Temperature Physics 150(3-4), 536-543 (Springer Science+Business Media) · Proseedings of QFS 2007, Kazan, Russia; 8 pages, 4 figures. Submited to J. Low Temp. Phys
arxiv created 2007/10/18 · openalex publication_date 2007/11/26 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
In the framework of the ``ULTIMA'' project, we use ultra cold superfluid 3He bolometers for the direct detection of single particle events, aimed for a future use as a dark matter detector. One parameter of the pulse shape observed after such an event is the thermalization time constant. Until now it was believed that this parameter only depends on geometrical factors and superfluid 3He properties, and that it is independent of the nature of the incident particles. In this report we show new results which demonstrate that a difference for muon- and neutron events, as well as events simulated by heater pulses exist. The possibility to use this difference for event discrimination in a future dark matter detector will be discussed.