铜丝电爆炸的光谱分析

金涌; 栗保明

doi:10.11883/1001-1455(2014)02-0252-05

铜丝电爆炸的光谱分析

doi: 10.11883/1001-1455(2014)02-0252-05

金涌^,,
栗保明

南京理工大学瞬态物理国家重点实验室，江苏南京210094

基金项目: 国家高技术研究发展计划(863计划)项目(2012AA8091201)

详细信息

作者简介:
金涌(1986—), 男, 博士研究生

中图分类号: O389; O536
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- 被引次数: 0
出版历程
- 收稿日期: 2012-09-03
- 修回日期: 2013-03-26
- 刊出日期: 2014-03-25

Spectral analysis on electrical explosion of copper wire

Jin Yong^,,
Li Bao -ming

National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China

Funds: Supported by the National High -tech R & D Program (863Program) (2012AA8091201)

More Information

Corresponding author: Jin Yong, kingdeyu@163.com

摘要

摘要: 通过搭建脉冲成形网络放电模块和光谱测试系统，利用Andor SR750光谱仪测量了铜丝电爆炸等离子体在400~500nm范围内的发射光谱。根据热力学平衡理论，采用双谱线相对强度法计算了等离子体的激发温度，并研究了激发温度随时间变化的特性。研究结果表明，铜丝电爆炸产生的稳态等离子体的激发温度约为5 400K。在脉冲放电前期，激发温度变化较大；在放电后期，激发温度较稳定；整个脉冲时间内激发温度差约达800K。
- 爆炸力学 /
- 激发温度 /
- 双谱线相对强度法 /
- 铜丝 /
- 电爆炸 /
- 等离子体
Abstract: A pulse forming network (PFN)discharge module and a spectroscopy system were employed to discuss the electrical explosion of copper wire.The plasma emission spectra were obtained in the wavelength range of 400-500nm by an Andor SR750spectrograph.Based on the thermodynamic equilibrium theory, the arc plasma excitation temperature was calculated by the relative line intensities.And the variation characteristic of the excitation temperature was discussed.The results show that the steady -state plasma excitation temperature by the exploding copper wire is approximately 5400K.The excitation temperature changes obviously in the prophase of the pulse discharge and it is relatively stable at the later stage of the pulse discharge.The excitation temperature difference during the whole pulse time is about 800K.
- mechanics of explosion /
- excitation temperature /
- relative line intensities /
- copper wire /
- electrical explosion /
- arc plasma

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图 1 实验系统示意图

Figure 1. Schematic diagram of experimental system

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图 2 PFN放电时负载电压和电流

Figure 2. Load voltage and current by PFN discharging

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图 3 铜丝电爆炸等离子体光谱

Figure 3. Plasma spectra by exploding a copper wire

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图 4 t₂时刻的等离子体光谱

Figure 4. Plasma spectrum at t₂

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图 5 等离子体温度变化曲线

Figure 5. Plasma temperature curves

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表 1 CuⅠ若干谱线的光谱参数^[13-15]

Table 1. Parameters of CuⅠ emission lines^[13-15]

λ_m/nm E_m/cm^-1 g_m A_m /(10^-8 s^-1)

406.5 0.210

450.9 0.275

454.0 63 585 4 0.212

458.7 62 952 6 0.320

465.1 62 403 8 0.380

470.5 62 403 8 0.055

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