Production of multiply charged fullerene and carbon cluster beams by a 14.5 GHz ECR ion source
Production of multiply charged fullerene and carbon cluster beams by a 14.5 GHz ECR ion source
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通过 14.5 GHz ECR 离子源产生多电荷富勒烯和碳簇束
DOI：
10.1063/1.1429788
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发表时间：
2002
影响因子：
1.6
通讯作者：
A. Kitagawa
中科院分区：
文献类型：
--
作者：
S. Biri;A. Válek;L. Kenéz;A. Jánossy;A. Kitagawa
我们报告了对 14.5 GHz 电子回旋共振 (ECR) 离子源 (ECRIS) 产生的正常和内嵌富勒烯等离子体和束的研究的第一个结果。在等离子体室中产生主要由N、N2、C、C2和C60组成的混合等离子体。在富勒烯球中形成笼状氮需要对 14.5 GHz ECRIS 进行仔细、不寻常的调谐。我们在 ECRIS 内沉积了宏观数量的 N@C60 在 C60 中的固溶体。使用电子自旋共振光谱离线测量的 N@C60/C60 比率可能超过使用传统非 ECR 技术的典型值。在提取的光束光谱中记录了高强度的 C60Q+ 离子 (Q=1–5)。在 700 V 提取电压下测得的最高 C60+ 束电流为 410 nA。该方法也可用于从富勒烯生产碳簇束。我们产生了强度为 10-100 nA 的 CnQ+ 离子（n=2-15，Q=1,2）。
We report our first results on the study of normal and endohedral fullerene plasmas and beams produced by a 14.5 GHz electron cyclotron resonance (ECR) ion source (ECRIS). A mixed plasma of mainly N, N2, C, C2, and C60 was produced in the plasma chamber. Formation of caged nitrogens in the fullerene balls requires a careful, unusual tuning of the 14.5 GHz ECRIS. We deposited macroscopic quantities of the solid solution of N@C60 in C60 within the ECRIS. The N@C60/C60 ratio measured off-line using electron-spin-resonance spectroscopy may exceed typical values using conventional, non-ECR techniques. High intensities of C60Q+ ions (Q=1–5) were recorded in the extracted beam spectra. The highest measured C60+ beam current was 410 nA at 700 V extraction voltage. The method may be applied to produce carbon cluster beams from fullerenes, as well. We produced CnQ+ ions (n=2–15, Q=1,2) with intensities of 10–100 nA.