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Rydberg-positronium velocity and self-ionization studies in a 1T magnetic field and cryogenic environment
Physical Review A ( IF 2.9 ) Pub Date : 2020-07-02 , DOI: 10.1103/physreva.102.013101 M. Antonello , A. Belov , G. Bonomi , R. S. Brusa , M. Caccia , A. Camper , R. Caravita , F. Castelli , D. Comparat , G. Consolati , L. Di Noto , M. Doser , M. Fanì , R. Ferragut , J. Fesel , S. Gerber , A. Gligorova , L. T. Glöggler , F. Guatieri , S. Haider , A. Hinterberger , O. Khalidova , D. Krasnický , V. Lagomarsino , C. Malbrunot , S. Mariazzi , V. Matveev , S. R. Müller , G. Nebbia , P. Nedelec , L. Nowak , M. Oberthaler , E. Oswald , D. Pagano , L. Penasa , V. Petracek , F. Prelz , B. Rienäcker , O. M. Røhne , A. Rotondi , H. Sandaker , R. Santoro , G. Testera , I. C. Tietje , T. Wolz , C. Zimmer , N. Zurlo ,
Physical Review A ( IF 2.9 ) Pub Date : 2020-07-02 , DOI: 10.1103/physreva.102.013101 M. Antonello , A. Belov , G. Bonomi , R. S. Brusa , M. Caccia , A. Camper , R. Caravita , F. Castelli , D. Comparat , G. Consolati , L. Di Noto , M. Doser , M. Fanì , R. Ferragut , J. Fesel , S. Gerber , A. Gligorova , L. T. Glöggler , F. Guatieri , S. Haider , A. Hinterberger , O. Khalidova , D. Krasnický , V. Lagomarsino , C. Malbrunot , S. Mariazzi , V. Matveev , S. R. Müller , G. Nebbia , P. Nedelec , L. Nowak , M. Oberthaler , E. Oswald , D. Pagano , L. Penasa , V. Petracek , F. Prelz , B. Rienäcker , O. M. Røhne , A. Rotondi , H. Sandaker , R. Santoro , G. Testera , I. C. Tietje , T. Wolz , C. Zimmer , N. Zurlo ,
We characterized the pulsed Rydberg-positronium production inside the Antimatter Experiment: Gravity, Interferometry, Spectroscopy () apparatus in view of antihydrogen formation by means of a charge exchange reaction between cold antiprotons and slow Rydberg-positronium atoms. Velocity measurements on the positronium along two axes in a cryogenic environment () and in magnetic field were performed. The velocimetry was done by microchannel-plate (MCP) imaging of a photoionized positronium previously excited to the state. One direction of velocity was measured via Doppler scan of this line, another direction perpendicular to the former by delaying the exciting laser pulses in a time-of-flight measurement. Self-ionization in the magnetic field due to the motional Stark effect was also quantified by using the same MCP-imaging technique for Rydberg positronium with an effective principal quantum number ranging between 14 and 22. We conclude with a discussion about the optimization of our experimental parameters for creating Rydberg positronium in preparation for an efficient pulsed production of antihydrogen.
中文翻译:
1T磁场和低温环境中的Rydberg-正电子速度和自电离研究
我们在反物质实验中表征了脉冲式Rydberg-正电子的产生:重力,干涉法,光谱法(考虑到通过冷反质子与慢Rydberg-正电子原子之间的电荷交换反应形成氢的装置。在低温环境中沿两个轴对正电子进行速度测量()和 进行磁场。通过微通道板(MCP)对先前被激发到州。通过多普勒扫描测量该方向的速度在飞行时间测量中,通过延迟激发的激光脉冲,使垂直于前者的另一方向垂直。还使用相同的MCP成像技术对具有有效主量子数的Rydberg正电子对由于运动Stark效应引起的磁场中的自电离进行了定量 范围在14到22之间。我们最后讨论了有关优化实验参数以创建Rydberg正电子,以准备高效脉冲生产抗氢的讨论。
更新日期:2020-07-02
中文翻译:
1T磁场和低温环境中的Rydberg-正电子速度和自电离研究
我们在反物质实验中表征了脉冲式Rydberg-正电子的产生:重力,干涉法,光谱法(考虑到通过冷反质子与慢Rydberg-正电子原子之间的电荷交换反应形成氢的装置。在低温环境中沿两个轴对正电子进行速度测量()和 进行磁场。通过微通道板(MCP)对先前被激发到州。通过多普勒扫描测量该方向的速度在飞行时间测量中,通过延迟激发的激光脉冲,使垂直于前者的另一方向垂直。还使用相同的MCP成像技术对具有有效主量子数的Rydberg正电子对由于运动Stark效应引起的磁场中的自电离进行了定量 范围在14到22之间。我们最后讨论了有关优化实验参数以创建Rydberg正电子,以准备高效脉冲生产抗氢的讨论。