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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Considerations towards the possibility of the observation of parity nonconservation in highly charged ions in storage rings
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Considerations towards the possibility of the observation of parity nonconservation in highly charged ions in storage rings

机译:考虑到在储存环中高度电荷的离子中观察奇偶阶层非经济性的可能性

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摘要

The feasibility of an experiment for the observation of parity nonconserving effects using He-like highly charged ions in storage rings is discussed theoretically. The basic idea is the observation of an asymmetry in the emission of the hyperfine quenched transition (1s2s)S-1(0) - (1s)(2) S-1(0) + gamma with respect to the direction of a beam of ions with polarized nuclei. It will be shown, that for such an experiment Eu-151(61+) ions with nuclear spin I = 5/2 in the excited electronic state (1s2s)S-1(0) with zero total electron angular momentum and polarized nuclei are the best available candidates. The nuclei can be polarized if H-like Eu62+ ions capture an electron from a polarized electron beam which overlays the ion beam on some part of the ring and travels with nearly the same velocity. It is suggested, to monitor steadily the degree of the nuclear polarization by the observation of the selective laser excitation and subsequent decay of the Zeeman sublevels of the excited hyperfine states of the ionic ground state. Estimates for the observation time aiming at an accuracy of PNC measurement of about 0.1% are given.
机译:理论上讨论了使用HO样用的高度带电离子在储存环中观察奇偶校验不可应氧效果的实验的可行性。基本思想是观察血清淬火转变(1S2S)S-1(0) - &GT的发射中的不对称性。 (1S)(2)S-1(0)+伽马相对于具有偏振核的离子束的方向。将显示,对于这种实验Eu-151(61 +)离子,核旋转I = 5/2在激发的电子状态(1S2S)S-1(0)中,零总体角动量和极化核最好的候选人。如果H样EU62 +离子捕获来自偏振电子束的电子捕获电子束,核可以是偏振的,该束在环的某些部分上覆盖离子束并具有几乎相同的速度。建议,通过观察离子地面状态的激发杂种态的选择性激光激发和随后的塞曼余量的塞曼余尺寸的稳定监测核极化程度。给出了旨在瞄准约0.1%的PNC测量的准确性的观察时间的估计。

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