Scholarlink

<p>High-intensity laser (HIL) facilities with high repetition rates are transforming research in nuclear physics, laboratory astrophysics, and high-energy-density physics. However, real-time diagnostics in such environments remain challenging because intense electromagnetic pulses (EMPs) degrade conventional detector performance. This paper presents a real-time diagnostic method based on scintillator activation, exploiting the dual role of scintillators as both activation media and radiation sensors. The methodology involves selecting scintillators with appropriate activation half-lives and characteristic energy responses to enable inter-shot measurements while avoiding direct EMP exposure. A proof-of-principle experiment using a LaBr<InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(_3\)</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mn>3</mn> <mrow /> </mmultiscripts> </math></EquationSource> </InlineEquation>(Ce) scintillator at the Shanghai Superintense Ultrafast Laser Facility (SULF) demonstrated the successful detection of characteristic <InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(\gamma\)</EquationSource> <EquationSource Format="MATHML"><math> <mi>γ</mi> </math></EquationSource> </InlineEquation> rays from the activation product <InlineEquation ID="IEq3"> <EquationSource Format="TEX">\(^\text {79m}\)</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mrow /> <mtext>79m</mtext> </mmultiscripts> </math></EquationSource> </InlineEquation>Br, showing that high signal-to-noise ratios and minimal inter-shot interference can be achieved by selecting activation products with appropriate half-lives. This approach offers several advantages, including rapid data acquisition, selectivity in the activation channel, and adaptability to various HIL scenarios, paving the way for advanced diagnostics in next-generation laser systems.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Real-time high-power laser diagnostics based on online scintillator activation

  • 期刊论文

  • 发表日期：

    2026年7月30日

查看全文
  • You-Jing Wang,
  • Yi-Xin Li,
  • Wei-Fu Yin,
  • Pu-Tong Wang,
  • Wan-Qing Su,
  • Zhi-Guo Ma,
  • Kai Zhao,
  • Xian-Gai Deng,
  • Feng-Hua Qiao,
  • Ying-Zi Dai,
  • Bo-Wen Zhang,
  • Cheng-Yu Qin,
  • Di-Rui Xu,
  • Hui Zhang,
  • Liang-Liang Ji,
  • Guo-Qiang Zhang,
  • Chang-Bo Fu,
  • Yu-Gang Ma

摘要

High-intensity laser (HIL) facilities with high repetition rates are transforming research in nuclear physics, laboratory astrophysics, and high-energy-density physics. However, real-time diagnostics in such environments remain challenging because intense electromagnetic pulses (EMPs) degrade conventional detector performance. This paper presents a real-time diagnostic method based on scintillator activation, exploiting the dual role of scintillators as both activation media and radiation sensors. The methodology involves selecting scintillators with appropriate activation half-lives and characteristic energy responses to enable inter-shot measurements while avoiding direct EMP exposure. A proof-of-principle experiment using a LaBr \(_3\) 3 (Ce) scintillator at the Shanghai Superintense Ultrafast Laser Facility (SULF) demonstrated the successful detection of characteristic \(\gamma\) γ rays from the activation product \(^\text {79m}\) 79m Br, showing that high signal-to-noise ratios and minimal inter-shot interference can be achieved by selecting activation products with appropriate half-lives. This approach offers several advantages, including rapid data acquisition, selectivity in the activation channel, and adaptability to various HIL scenarios, paving the way for advanced diagnostics in next-generation laser systems.