3 papers
physics.ins-det2026
PyNMC: An Open-Source Framework for Neutron Multiplicity Counting Simulation Coupling OpenMC, FREYA, and ALPHANSO
Christopher Fichtlscherer
Neutron multiplicity counting (NMC) underpins plutonium assay in nuclear safeguards, arms control, and disarmament verification, but existing simulation tools are essentially limit…
physics.ins-det2026
Machine learning inference of fission yields from gamma spectroscopy for very low-yield nuclear test verification
Julien de Troullioud de Lanversin, Jiehui Li, Christopher Fichtlscherer +2
Very low-yield nuclear tests pose a major verification challenge for the zero-yield standard of the Comprehensive Nuclear-Test-Ban Treaty (CTBT). The zero-yield standard prohibits…
math.NA2026
Reconstructions of Single Pixel X-Ray Transforms with Applications in Nuclear-Disarmament Verification
Christopher Fichtlscherer, R. Scott Kemp, Christina Brandt
In nuclear arms control and disarmament processes, it is crucial to determine whether an object is a nuclear weapon or not without revealing sensitive information about it. At the…