arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0711.0337physics.atom-phhep-ph
收藏

线性斯塔克位移测量小原子样品Fr弱核电荷

Linear Stark Shifts to Measure the Fr Weak Nuclear Charge with Small Atom Samples

Marie-Anne Bouchiat

摘要:

研究了基态碱金属原子在E和B场作用下的手征性,用圆偏振激光束修饰,并与场助禁戒跃迁(如Fr中的7S-8 S)密切失谐,预测了它们的子能级的宇称破坏能移,在E中呈线性,和弱核电荷Q_W $. A dressing beam of 10 kW/cm$ ^2 $ at 506 nm produces a shift of $ \sim 100 μ $Hz at E=100 V/cm, B $ \gtrsim $30 mG. It should be observable with $ \sim 10^4 $ Fr atoms confined in an optical dipole trap. We discuss optimal conditions, parameter reversals and a calibration procedure to measure $ Q_W$。

英文摘要:

We study the chirality of ground-state alkali atoms in E and B fields, dressed with a circularly-polarized laser beam close-detuned from an E-field-assisted forbidden transition, such as 7S-8S in Fr. We predict a parity violating energy shift of their sublevels, linear in E, and the weak nuclear charge Q_W$. A dressing beam of 10 kW/cm$^2$ at 506 nm produces a shift of $\sim100 μ$Hz at E=100 V/cm, B $\gtrsim$30 mG. It should be observable with $\sim 10^4$ Fr atoms confined in an optical dipole trap. We discuss optimal conditions, parameter reversals and a calibration procedure to measure $Q_W$.

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。

↑