In situ electromagnetic field diagnostics with an electron plasma in a Penning-Malmberg trap
In situ electromagnetic field diagnostics with an electron plasma in a Penning-Malmberg trap
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DOI：
10.1088/1367-2630/16/1/013037
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发表时间：
2014-01-21
影响因子：
3.3
通讯作者：
Wurtele, J. S.
中科院分区：
文献类型：
--
作者：
Amole, C.;Ashkezari, M. D.;Wurtele, J. S.
我们提出了一种新的检测方法的回旋共振频率的电子等离子体中的潘宁-Malmberg陷阱。利用这种技术，电子等离子体被用作测量阱中静磁场和微波电场的原位诊断工具。电子等离子体的回旋运动由微波辐射激发，等离子体的温度变化通过监测等离子体的四极模频率来非破坏性地测量。空间分辨的微波电场强度可以从等离子体温度的变化推断，磁场是通过回旋共振频率。这些测量被广泛用于最近报道的反氢共振量子相互作用的演示。
We demonstrate a novel detection method for the cyclotron resonance frequency of an electron plasma in a Penning-Malmberg trap. With this technique, the electron plasma is used as an in situ diagnostic tool for the measurement of the static magnetic field and the microwave electric field in the trap. The cyclotron motion of the electron plasma is excited by microwave radiation and the temperature change of the plasma is measured non-destructively by monitoring the plasma's quadrupole mode frequency. The spatially resolved microwave electric field strength can be inferred from the plasma temperature change and the magnetic field is found through the cyclotron resonance frequency. These measurements were used extensively in the recently reported demonstration of resonant quantum interactions with antihydrogen.