They also needed an alternative to conventional X-rays. In a clinical linac, X-ray photons are produced by dumping high-energy electrons into a bremsstrahlung target, which is made of a material with a high atomic number, like tungsten or copper. The target slows the electrons, converting their kinetic energy into X-ray photons. It’s an inherently inefficient process that wastes most of the beam power as heat and makes it extremely difficult to reach the ultrahigh dose rates required for FLASH. High-energy electrons, by contrast, can be switched on and off within milliseconds. And because they have a charge and can be steered by magnets, electrons can be precisely guided to reach tumors deep within the body. (Researchers are also investigating protons and carbon ions; see the sidebar, “What’s the Best Particle for FLASH Therapy?”)
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All laser printers struggle with complex colors, photos, and art, but the HP had smoother gradients and less banding than I saw on other color laser printers. I still wouldn’t use it as a primary photo printer, but it’s certainly a point in the OfficeJet’s favor, and helps justify the high price tag.，更多细节参见新收录的资料
公司在近期调研中释放的产品进展，试图为扩产提供支撑：700V高压BCD产品工程阶段取得重大突破，计划2026年释放产能；与芯微泰克合作的1200V背道激光退火超薄片IGBT进入工程批试样。技术突破与扩产规划形成对应，看似具备落地基础，但产能释放与市场需求、客户验证之间的时间差，仍然具备不确定性。