氢化钛镍合金阴极真空弧放电离子特性研究

赵光义; 王腾钫; 吴聪; 李正宏

doi:10.7538/yzk.2019.youxian.0848

氢化钛镍合金阴极真空弧放电离子特性研究

复旦大学现代物理研究所,上海200433
中国工程物理研究院核物理与化学研究所,四川绵阳621900

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- 刊出日期: 2020-04-19

Study of Ion Characteristic of Vacuum Arc Ion Source with Titanium-nickel Alloy Hydride Cathode

Institute of Modern Physics, Fudan University, Shanghai 200433, China
Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, China

摘要

摘要: 本文将氢化钛镍合金材料应用于强流长脉冲（200 A/270 μs）真空弧放电实验中，该材料能在强流长脉冲真空弧放电产生的高温条件下保持较好的稳定性。使用飞行时间谱仪获得了氢化钛镍合金阴极真空弧放电产生的离子电荷态分布和离子成分。结果表明：Tiⁿ⁺和Niⁿ⁺电荷态为1+、2+和3+，在放电过程的早期（0~30 μs），H⁺成分随时间逐渐增加，在30 μs时达到最大比例57%，而Tiⁿ⁺和Niⁿ⁺（n=1，2，3）离子成分随时间逐渐减少，在30 μs时达到最小比例43%；在放电过程的后期（30~270 μs），H⁺成分迅速下降且在75 μs后保持在总离子流的12%左右直至放电结束，Tiⁿ⁺和Niⁿ⁺（n=1，2，3）含量随时间逐步增加，且在75 μs后保持在总离子流的88%左右直至放电结束。
- 真空弧放电 ,
- 氢化钛镍合金 ,
- 离子电荷态 ,
- 离子成分
Abstract: The titanium-nickel alloy hydride was applied to high-current long pulse (200 A/270 μs) vacuum arc discharging in this paper, which is more resistant to fragmentation and maintains good stability under high temperature condition generated by high-current long pulse vacuum arc discharging. In addition, an experimental study of the ion charge state distribution and mass-charge component of vacuum arc discharging with titanium-nickel alloy hydride cathode by the time-of-flight method was carried out for the first time. The results show that titanium ion and nickel ion have charge states of 1+, 2+, and 3+. Meanwhile, in the early stage of the discharging process (0-30 μs), the composition of H⁺ gradually increases with time, and reaches a maximum ratio of 57% at 30 μs, while the compositions of Tiⁿ⁺ and Niⁿ⁺ (n=1,2,3) rapidly decrease with time, and reach a minimum ratio of 43% at 30 μs; in the later stage of the discharging process (30-270 μs), the composition of H⁺ begins to decrease rapidly and remains unchanged at around 12% after 75 μs until the end of the pulse, and the compositions of Tiⁿ⁺ and Niⁿ⁺ (n=1, 2, 3) gradually increase with time and remain around 88% after 75 μs until the end of the pulse.
- vacuum arc discharging ,
- titanium-nickel alloy hydride ,
- ion charge state ,
- ion composition

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氢化钛镍合金阴极真空弧放电离子特性研究

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Study of Ion Characteristic of Vacuum Arc Ion Source with Titanium-nickel Alloy Hydride Cathode

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