平顶脉冲磁场
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观测微观世界,有了更强“放大镜”(探一线)
Ren Min Ri Bao· 2025-08-08 22:01
Core Insights - The research team led by Professor Li Liang at Huazhong University of Science and Technology has achieved a new world record of 71.36 Tesla for a flat-top pulsed magnetic field, reinforcing China's leading position in this field [1][2] - The pulsed strong magnetic field facility is crucial for modern scientific experiments, enabling the observation of material changes that are not visible under normal conditions, thus acting as a "microscope" for the microscopic world of matter [1][2] Group 1 - The facility can generate magnetic fields up to 2 million times stronger than Earth's magnetic field, which is essential for various scientific research areas including physics, chemistry, materials science, and biology [1][2] - The new record of 71.36 Tesla surpasses existing international levels by 19%, showcasing significant advancements in material and control technology, including the development of high-strength copper-silver alloy wires [2] - The facility has been operational since 2014 and has been designed with indigenous technology, avoiding reliance on foreign expertise, which has allowed for a significant increase in research capabilities within China [2][3] Group 2 - Over the past decade, the facility has opened its doors to over 130 research institutions globally, facilitating more than 2,000 foundational research projects [3] - Future plans for the facility include enhancements to magnetic field parameters, measurement techniques, and research areas, aiming to develop a 110 Tesla ultra-strong magnetic field and a 9.50 Tesla superconducting pulsed composite magnetic field [3]
我国科学家在强磁场技术领域取得新突破 观测微观世界,有了更强“放大镜”(探一线)
Ren Min Ri Bao· 2025-08-08 21:41
Core Insights - The research team led by Professor Li Liang at Huazhong University of Science and Technology has achieved a new world record of 71.36 Tesla for a flat-top pulsed magnetic field, reinforcing China's international leadership in this field [1][2] - The pulsed strong magnetic field facility is crucial for modern scientific experiments, enabling the observation of material changes that are not visible under normal conditions, thus acting as a "microscope" for the microscopic world of matter [1][2] - The facility has been open for global collaboration, with over 70% of its usage dedicated to external researchers, facilitating more than 2000 foundational research projects [3] Summary by Sections Achievements - The team successfully created a flat-top pulsed magnetic field of 71.36 Tesla, surpassing previous records by 19% [2] - The facility has transitioned from reliance on foreign resources to becoming a self-sufficient platform for high magnetic field experiments [3] Technological Innovations - Breakthroughs in material and control technology include the development of high-strength copper-silver alloy wires, which have a tensile strength improvement of nearly 40% compared to previous materials [2] - Innovative reverse circuit topology design has enabled precise generation of pre-structured magnetic field waveforms [2] Future Developments - Plans for enhancing the facility's performance include the construction of a 110 Tesla ultra-strong magnetic field and a 9.50 Tesla superconducting pulsed composite magnetic field, along with 10 experimental testing systems [3]
中国科研团队刷新平顶脉冲磁场世界纪录
Zhong Guo Xin Wen Wang· 2025-06-22 07:11
中新社武汉6月22日电 (高翔)华中科技大学22日发布消息,该校国家脉冲强磁场科学中心李亮教授团队 于近日成功实现71.36特斯拉平顶脉冲磁场,刷新其团队于2018年创下的64特斯拉世界纪录,进一步巩 固中国在该领域的国际领先地位。 据悉,强磁场是现代科学实验最重要的极端条件之一,能够为基础科学研究发现新现象、揭示新规律提 供更多机遇。平顶脉冲磁场是强磁场技术前沿方向,兼具稳态与脉冲优势,能实现高磁场强度且稳定维 持,为核磁共振等研究提供独特实验条件。特斯拉是磁场大小单位,1特斯拉相当于地球磁感应的2万 倍,磁场越强,应用潜力越大。 李亮介绍,针对强电磁力下磁体结构稳定与大电流精确调控两大难题,团队在材料与调控技术上实现突 破:自主研制国产高强高导铜银合金导线,抗拉强度较原有材料提升近40%;创新性将瞬态控制问题转 化为逆向电路拓扑设计,实现预构磁场波形精准生成。 据介绍,在标志脉冲强磁场装置水平的五大核心指标中,国家脉冲强磁场科学中心的峰值场强达到 94.88特斯拉,世界第二;而平顶磁场强度、脉冲重复频率、测量精度和磁体寿命等多项指标,均全球 领先。 最终,团队以高稳定性(稳定度0.39%,持续时间12.1 ...