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<p>Advanced, real-time digital autoradiography (DAR) systems may provide rapid and selective identification of regions of interest on post-detonation samples. Data from these systems could aid in the creation of microsamples, enabling more timely sample analysis. One challenge is the high radioactivity of such samples, which can overwhelm many systems. Further, alpha emissions from actinides, of forensics interest, are overshadowed by colossal fission and activation products emitting beta and gamma-rays. DAR has the potential to quickly find targeted regions of interests where actinides and fission products are concentrated. This paper explores two advanced systems: the ionizing-radiation Quantum Imaging Detector (iQID), a real-time intensified scintillation camera, and large area Charge-Coupled Devices (CCDs) developed for dark-matter detection. These systems offer complementary features for identifying radioactive regions and particles of interest on a sample. This paper highlights measurement challenges with post-detonation samples, explores approaches such as use of gating and collimators to overcome quantitative measurement bottlenecks, and includes results of experiments to test those approaches. Concepts for measuring large samples with an iQID are also discussed.</p>

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Microsample identification in post-detonation samples with advanced digital autoradiography systems

  • 期刊论文

  • 发表日期：

    2026年3月5日

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  • Benjamin S. McDonald,
  • Luca Pagani,
  • James E. Baciak,
  • Heather S. Cunningham,
  • Benjamin A. Fehringer,
  • Todd W. Hossbach,
  • Micah Miller,
  • Hannah K. Patz,
  • R. Seth Wood,
  • Mital A. Zalavadia

摘要

Advanced, real-time digital autoradiography (DAR) systems may provide rapid and selective identification of regions of interest on post-detonation samples. Data from these systems could aid in the creation of microsamples, enabling more timely sample analysis. One challenge is the high radioactivity of such samples, which can overwhelm many systems. Further, alpha emissions from actinides, of forensics interest, are overshadowed by colossal fission and activation products emitting beta and gamma-rays. DAR has the potential to quickly find targeted regions of interests where actinides and fission products are concentrated. This paper explores two advanced systems: the ionizing-radiation Quantum Imaging Detector (iQID), a real-time intensified scintillation camera, and large area Charge-Coupled Devices (CCDs) developed for dark-matter detection. These systems offer complementary features for identifying radioactive regions and particles of interest on a sample. This paper highlights measurement challenges with post-detonation samples, explores approaches such as use of gating and collimators to overcome quantitative measurement bottlenecks, and includes results of experiments to test those approaches. Concepts for measuring large samples with an iQID are also discussed.