发表机构
INFN Milano（意大利国家核物理研究所米兰分部）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究利用古探测器（如法国奥弗涅橄榄岩捕虏体）重建过去5万年宇宙射线通量历史，并通过PRImuS实验验证技术可行性，为超长时域天体物理提供新工具。
AI 中文摘要
古探测器为重建宇宙射线（CR）通量数百万年的历史提供了独特途径，能够保留邻近超新星等瞬态高能事件的痕迹。该技术旨在利用天然矿物作为粒子探测器，观察由宇宙射线诱导的核反冲在矿物地质寿命期间累积形成的持久损伤径迹，从而提供过去粒子通量的地质档案。基于我们对墨西拿盐度危机蒸发岩的研究（该研究证明了具有特定地质历史的矿物可能能够探测初级宇宙射线通量的变化），我们现在已扩展到多样化的陆地记录。本文介绍了我们近期发表的论文，该论文提出利用法国奥弗涅地区的橄榄岩捕虏体，其喷发时间序列可能有助于区分过去5万年内宇宙射线通量的不同情景。这项现象学研究得到了由INFN资助的PRImuS实验的支持，该实验旨在证明高通量光学显微镜和等离子体刻蚀技术在分析这些矿物靶标方面的有效性。通过验证理论径迹长度谱并细化实验效应的估算，PRImuS的目标是将古探测器确立为超长时域天体物理学的强大工具。
英文摘要
Paleo-detectors provide a unique avenue to reconstruct the multi-million-year history of cosmic-ray (CR) flux, preserving signatures of transient high-energy events such as nearby supernovae. This technique aims to use natural minerals as particle detectors, looking at the persistent damage tracks created by CR-induced nuclear recoils, accumulated over the minerals' geological lifespan, offering a geological archive of past particle fluxes. Building on our study of Messinian Salinity Crisis evaporites, which demonstrated that minerals with specific geological histories may enable the detection of primary CR flux variations, we have now expanded to diverse terrestrial records. This contribution presents our recent publication proposing olivine xenoliths from Auvergne, France, where eruption chronosequences could allow for the differentiation of CR flux scenarios over the last 50 kyr. This phenomenological work is supported by the INFN-funded PRImuS experiment, which aims to prove the efficacy of high-throughput optical microscopy and plasma etching to analyze these mineral targets. By validating theoretical track-length spectra and refining the estimates of experimental effects, PRImuS's goal is to establish paleo-detectors as a powerful tool for very-long-range time-domain astrophysics.
CommentsProceedings of the 9th Heidelberg Gamma-Ray Symposium
