Lamb-Dip Laser-Induced Fluorescence Spectroscopy for Measuring Magnetic Field in a Plasma
Lamb-Dip Laser-Induced Fluorescence Spectroscopy for Measuring Magnetic Field in a Plasma
复制标题
用于测量等离子体磁场的 Lamb-Dip 激光诱导荧光光谱
DOI：
10.1143/jjap.50.036101
复制
发表时间：
2011
影响因子：
1.5
通讯作者：
Masayoshi Y. Tanaka
中科院分区：
文献类型：
--
作者：
K. Ogiwara;M. Aramaki;S. Yoshimura;Yuta Itoh;Y. Kato;Masayoshi Y. Tanaka
我们开发了一种Lamb-dip激光诱导荧光（LIF）系统，用于精确测量等离子体中的局部磁场强度。利用孔燃烧效应，我们在LIF光谱上做了尖锐的凹陷作为频率标记，并通过读取凹陷的频率间隔准确地确定了塞曼分裂。该方法即使在LIF谱的多普勒展宽大于塞曼频移的情况下也是有效的。新开发的LIF系统能够确定10-4 t量级的磁场强度。已经证明，Lamb-dip LIF系统可以成功地在HYPER-I线性器件中再现非常小的场不均匀性。
We have developed a Lamb-dip laser-induced fluorescence (LIF) system to precisely measure the local magnetic field strength in a plasma. Utilizing the hole burning effect, we made sharp dips on the LIF spectrum as the frequency markers and accurately determined the Zeeman splitting by reading the frequency interval of the dips. The method is valid even in the conditions where the Doppler broadening of the LIF spectrum is larger than the Zeeman shift. The newly developed LIF system is capable of determining a magnetic field strength on the order of 10-4 T. It has been demonstrated that the Lamb-dip LIF system can successfully reproduce a very small field inhomogeneity in the HYPER-I linear device.