arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2105.03076physics.atom-phnucl-ex
收藏

自旋交换光抽运对131 π核总自旋Angular Momentum的两个数量级改善

Two-Orders-of-Magnitude Improvement in the Total Spin Angular Momentum of 131Xe Nuclei Using Spin Exchange Optical Pumping

Michael J. Molway, Liana Bales-Shaffer, Kaili Ranta, Dustin Basler, Megan Murphy, Bryce E. Kidd, Abdulbasit Tobi Gafar, Justin Porter, Kierstyn Albin, Boyd M. G… 展开作者

Michael J. Molway, Liana Bales-Shaffer, Kaili Ranta, Dustin Basler, Megan Murphy, Bryce E. Kidd, Abdulbasit Tobi Gafar, Justin Porter, Kierstyn Albin, Boyd M. Goodson, Eduard Y. Chekmenev, Matthew S. Rosen, W. Michael Snow, James Ball, Eleanor Sparling, Mia Prince, Daniel Cocking, Michael J. Barlow

摘要:

本文报道了四极(I=3/2)~(131)He的自旋交换光抽运超极化现象。对131 π极化动力学的观测表明,有效的碱金属/131 π自旋交换截面足够大,足以与131 π自旋弛豫竞争。131 nm的极化率达到7.6p/m1.5%。8.5EE20旋转--一个ca. 100-总自旋角动量的倍数改进--使应用包括自旋相关的中子-131 s波散射的测量和对超出标准模型的中子-131 s相互作用中的时间反演破坏的灵敏搜索。

英文摘要:

We report on hyperpolarization of quadrupolar (I=3/2) 131Xe via spin-exchange optical pumping. Observations of the 131Xe polarization dynamics show that the effective alkali-metal/131Xe spin-exchange cross-sections are large enough to compete with 131Xe spin relaxation. 131Xe polarization up to 7.6 p/m 1.5 percent was achieved in ca. 8.5EE20 spins--a ca. 100-fold improvement in the total spin angular momentum--enabling applications including measurement of spin-dependent neutron-131Xe s-wave scattering and sensitive searches for time-reversal violation in neutron-131Xe interactions beyond the Standard Model.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑