强激光与粒子束2025，Vol.37Issue(12)：160-170,11.DOI:10.11884/HPLPB202537.250098
屏蔽盒内PCB高能射线辐射效应的建模及计算
Modeling and calculation of radiation effects of high-energy rays on PCB inside a shielded enclosure
摘要
Abstract
[Background]X/γ-ray irradiation of an electronic system shielding box will penetrate the box body,generate photoelectrons or Compton electrons on the surface layers or inside the system,and excite electromagnetic pulses.These particles or electromagnetic fields will interfere with or even damage the sensitive electronic components of the electronic system inside the box,affecting the regular operation of the electronic system.[Purpose]To rapidly assess the particle and electromagnetic environment inside electronic systems under radiation exposure and enable timely protective measures that mitigate radiation-induced damage and ensure reliable operation.[Methods]We present a theoretical analysis of irradiation responses arising from two coupling mechanisms:electromagnetic pulses excited by primary particles within the cavity of a shielded enclosure and their field-to-circuit coupling to a printed circuit board(PCB),and direct multi-layer penetration coupling of ionizing radiation.Equivalent-circuit models were constructed to represent these coupling paths,and transient current responses were calculated analytically.[Results]The transient current responses of the shielded enclosure under high-energy radiation,computed using the equivalent-circuit approach,reproduce the trends observed in published experimental measurements and exhibit approximate numerical agreement.[Conclusions]The results validate the proposed theoretical modeling approach,showing that analytical equivalent-circuit analysis can provide rapid,simulation-free estimates of radiation effects on electronic systems.The method can be extended to scenarios that more closely match practical applications.关键词
X/γ射线/辐射效应/内电磁脉冲/印制电路板/等效电路Key words
X/γ-ray/radiation effects/internal electromagnetic pulse/printed circuit boards/equivalent circuit分类
核科学引用本文复制引用
张艺洁,郝建红,宋沛洋,张芳,范杰清,赵强,薛碧曦,董志伟,胡刚..屏蔽盒内PCB高能射线辐射效应的建模及计算[J].强激光与粒子束,2025,37(12):160-170,11.基金项目
国家自然科学基金项目(12205024) （12205024）
