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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2507.08618 |
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Table of Contents:
- Light scattering intensity distribution along the optical fiber length is analyzed, which was measured by optical time domain reflectometry (OTDR) during and after fiber irradiation in a nuclear reactor. The OTDR traces prove to contain two components associated with either radiation-induced attenuation (RIA), or with Rayleigh scattering coefficient (RSC) variation. The RSC increase effect in the first stage of fast-neutron irradiation is argued to be similar to the anomalous scattering buildup near the critical point of the liquid-vapor transition known as critical opalescence. For his reason, the RSC increase due to fast-neutron irradiation can be named neutron-induced opalescence (NIO).