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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Spatial compression of bunched crystalline ion beams
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Spatial compression of bunched crystalline ion beams

机译：束状结晶离子束的空间压缩

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Recently, bunched crystalline ion beams have been realized in the table-top rf quadrupole storage ring PALLAs by means of laser cooling. Here, a novel method for the measurement of the spatial distribution of the ion bunch is presented which is based on the time-resolved analysis of the fluorescence emitted by the ions during cooling. Thus, the phase transition from a gaseous to a crystalline beam can be followed monitoring the whole phase space, and structural transitions can be studied as a function of the variable longitudinal confinement. Surprisingly, the length of crystalline bunches was found to be considerably shortened by a factor of three with respect to the length expected for space charge dominated bunches. [References: 33]
机译：最近，借助激光冷却在台式射频四极杆存储环PALLA中实现了成束的结晶离子束。在此，提出了一种新的方法来测量离子束的空间分布，该方法基于冷却过程中离子发射的荧光的时间分辨分析。因此，可以监测整个相空间，从气体到结晶束的相变，并且可以根据可变的纵向限制研究结构的转变。令人惊讶地，发现相对于以空间电荷为主的束的预期长度，晶体束的长度显着缩短了三倍。 [参考：33]

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