近日，美国麻省理工学院S. G. Wilkins团队报道了分子中核磁化分布的观测。相关论文于2025年10月23日发表在《科学》杂志上。
精确的实验控制、分子的研究和分子结构的计算丰富了对核物理和粒子物理现象的研究。含有重的、八极体变形原子核的分子，如镭，是特别令人感兴趣的。
研究组报告了放射性单氟化镭分子225Ra19F结构的精确激光光谱测量和理论计算。该结果揭示了短程电子-核相互作用的精细细节，表明该分子对镭核内磁化分布的高灵敏度。这些结果提供了对核体积内电子波函数描述的严格测试，突出了这些分子用于研究亚原子现象的适用性。
附：英文原文
Title: Observation of the distribution of nuclear magnetization in a molecule
Author: S. G. Wilkins, S. M. Udrescu, M. Athanasakis-Kaklamanakis, R. F. Garcia Ruiz, M. Au, I. Beloevi, R. Berger, M. L. Bissell, A. A. Breier, A. J. Brinson, K. Chrysalidis, T. E. Cocolios, R. P. de Groote, A. Dorne, K. T. Flanagan, S. Franchoo, K. Gaul, S. Geldhof, T. F. Giesen, D. Hanstorp, R. Heinke, T. Isaev, á. Koszorús, S. Kujanp, L. Lalanne, G. Neyens, M. Nichols, H. A. Perrett, J. R. Reilly, L. V. Skripnikov, S. Rothe, B. van den Borne, Q. Wang, J. Wessolek, X. F. Yang, C. Zülch
Issue&Volume: 2025-10-23
Abstract: Precise experimental control and interrogation of molecules and calculations of their structure are enriching the investigation of nuclear and particle physics phenomena. Molecules containing heavy, octupole-deformed nuclei, such as radium, are of particular interest. Here, we report precision laser spectroscopy measurements and theoretical calculations of the structure of the radioactive radium monofluoride molecule 225Ra19F. Our results reveal fine details of the short-range electron-nucleus interaction, indicating the high sensitivity of this molecule to the distribution of magnetization, within the radium nucleus. These results provide a stringent test of the description of the electronic wave function inside the nuclear volume, highlighting the suitability of these molecules for investigating subatomic phenomena.
DOI: adm7717
Source: https://www.science.org/doi/10.1126/science.adm7717