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Updated: Aug 22, 2026

High-Resolution Neutron Spectroscopy to Study Picosecond-Nanosecond Dynamics of Proteins and Hydration Water
Published on: April 28, 2022
Passive in-flight neutron spectrometry by means of bonner spheres
1Atomic Institute of the Austrian Universities, Stadionallee 2, A-1020 Vienna, Austria. mhajek@ati.ac.at
Abstract:
The spectral distribution of the neutron fluence rate was determined on-board a series of eight trans-atlantic flights between Cologne (Germany) and Washington, DC (USA), using a passive Bonner Sphere spectrometer based on thermoluminescence detectors. Contrary to the commonly applied active systems, the passive instrument facilitates a complete discrimination of gamma ray and charged particle-induced events in the detector count rate. The system was calibrated in the CERN-EU High-Energy Reference Field (CERF). The measured spectra are compared with FLUKA Monte Carlo simulations and show excellent agreement.
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