3 papers
cond-mat.quant-gas2025
Zero-energy resonances in ultracold hydrogen sticking to liquid helium films of finite thickness
R. Karakhanyan, A. Voronin, V. Nesvizhevsky +2
We investigated quantum states of ultracold hydrogen atoms in a combined potential comprising the H-He film interaction in the presence of a substrate and the Earth gravitational f…
physics.ins-det2025
Performance of Silicon photomultipliers at low temperatures
Otto Hanski, Tom Kiilerich, Sampsa Ahopelto +4
We present experimental results of characterization of Silicon photomultipliers (SiPM) in a temperature range from 90~mK to 40~K. Two SiPMs, one from ONSEMI and one from Hamamatsu…
physics.atom-ph2024
Cold source of atomic hydrogen for loading large magnetic traps
A. Semakin, J. Ahokas, O. Hanski +8
We present a design and performance tests of an intense source of cold hydrogen atoms for loading large magnetic traps. Our source is based on a cryogenic dissociator of molecular…