activity
20212025
most citedA large octupole magnetic trap for research with atomic hydrogen

10 citations · 15 across the 5 of their papers we have counts for

collaborators

5 papers

physics.atom-ph2025

Cryogenic source of atomic tritium for neutrino-mass measurements and precision spectroscopy

Aleksei Semakin, Janne Ahokas, Tom Kiilerich +9

We propose a concept for a cryogenic source of atomic tritium at sub-Kelvin temperatures and energies suitable for magnetic trapping. The source is based on the dissociation of sol…

quant-ph2025

Gravitational and other shifts of whispering gallery and gravitational state interference patterns of light neutral particles

V. V. Nesvizhevsky, J. A. Pioquinto, K. Schreiner +7

We discuss small shifts in the interference patterns of gravitational and whispering gallery quantum states that can be observed with neutrons, atoms, antiatoms, muonium, positroni…

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★ 5 cited

GRASIAN: Shaping and characterization of the cold hydrogen and deuterium beams for the forthcoming first demonstration of gravitational quantum states of atoms

Carina Killian, Philipp Blumer, Paolo Crivelli +9

A low energy particle confined by a horizontal reflective surface and gravity settles in gravitationally bound quantum states. These gravitational quantum states (GQS) were so far…

physics.atom-ph2021★ 10 cited

A large octupole magnetic trap for research with atomic hydrogen

J. Ahokas, A. Semakin, J. Järvinen +12

We describe the design and performance of a large magnetic trap for storing and cooling of atomic hydrogen (H). The trap operates in the vacuum space of a dilution refrigerator at…