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首页> 外文期刊>Review of Scientific Instruments >Charge exchange recombination spectroscopy as a plasma diagnostic tool (invited)
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Charge exchange recombination spectroscopy as a plasma diagnostic tool (invited)

机译：电荷交换重组光谱法作为等离子体诊断工具（受邀）

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Intensity and line profile measurements of the spectra of light hydrogenic ions which are excited by charge exchange reactions with fast neutral atoms are being widely used as diagnostics for fusion plasma research. This technique, which is referred to as charge exchange recombination spectroscopy, allows measurements of the densities of fully stripped impurity ions and particle transport coefficients with only minor uncertainties arising from atomic processes. The excitation of long‐wavelength transitions in light ions such as He+, C5+, and O7+ allows relatively easy measurements of ion velocity distributions to determine ion temperatures and plasma rotation velocities. Among its advantages for such measurements are the facts that fiber‐optic coupling between a remote spectrometer and the immediate reactor environment is possible in many cases, the measurement is localized by the intersection region of a neutral beamline and viewing sightline, and intrinsic ions can be used so that injection of potentially perturbing impurities can be avoided. A particularly challenging application of this technique lies in the diagnosis of alpha particles expected to be produced in the present generation of Q≊1 tokamak experiments.
机译：通过与快速中性原子进行电荷交换反应而激发的轻质氢离子光谱的强度和线轮廓测量已广泛用作聚变等离子体研究的诊断方法。这项技术被称为电荷交换复合光谱学，可以测量完全剥离的杂质离子的密度和颗粒传输系数，而原子过程仅产生很小的不确定性。激发He +，C5 +和O7 +等轻离子中的长波长跃迁，可以相对轻松地测量离子速度分布，从而确定离子温度和等离子体旋转速度。这种测量的优点之一是，在许多情况下，远程光谱仪和紧邻的反应堆环境之间可能发生光纤耦合，测量通过中性束线和观察视线的交点区域进行定位，并且固有离子可以这样可以避免注入潜在干扰的杂质。该技术的一项特别具有挑战性的应用在于诊断有望在当代Q≊1托卡马克实验中产生的α颗粒。

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