| 强流脉冲离子束辐照钨靶温度场演化数值研究 |
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| 引用本文： | 吴迪,季长清,段萍,宫野.强流脉冲离子束辐照钨靶温度场演化数值研究[J].沈阳师范大学学报(自然科学版),2011,29(3):372-374. |
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| 作者姓名： | 吴迪 季长清 段萍 宫野 |
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| 作者单位： | 1. 大连大学物理科学与技术学院,辽宁大连,116622
2. 大连理工大学物理与光电工程学院,辽宁大连,116024 |
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| 基金项目： | 国家自然科学基金资助项目(10975026); 大连大学科学基金资助课题(SBQ200810) |
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| 摘 要： | 强流脉冲离子束(HIPIB)使材料表面气化产生喷发等离子体从而进行薄膜生长、纳米粉的制备等工作。金属钨的熔点高,热导性好,是耐高热流密度防护层最可能的材料。为了研究金属钨在高热负荷下的响应,建立了HIPIB辐照钨靶的考虑相变的非线性热力学方程,并采用有限元方法数值求解了靶材辐照后的二维温度场演化问题,得到了钨靶温度场的时空演化规律。当离子束流密度为100 A/cm2时,脉冲结束后束流入射中心表层约0.3μm厚的材料熔化,且熔化是从表面开始的,而后因热传导固化;脉冲结束后开始时靶材表面温度急剧下降,而后变得缓慢,温降的梯度在不同时刻均存在峰值,且随时间增加峰值向纵向深度处移动。
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| 关 键 词： | 强流脉冲离子束 钨 温度场 数值方法 |
Numerical study on evolution of temperature field in tungsten irradiated by high-intensity pulsed ion beam |
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| WL Di,JI Chang-qing,DUAN Ping,GONG Ye.Numerical study on evolution of temperature field in tungsten irradiated by high-intensity pulsed ion beam[J].Journal of Shenyang Normal University: Nat Sci Ed,2011,29(3):372-374. |
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| Authors: | WL Di JI Chang-qing DUAN Ping GONG Ye |
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| Institution: | WU Di1,JI Chang-qing1,DUAN Ping1,GONG Ye2(1.College of Physical Science and Technology,Dalian University,Dalian 116622,China,2.School of Physics and Optoelectronic Engineering,Dalian University of Technology,Dalian 116024,China) |
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| Abstract: | High-intensity pulsed ion beam(HIPIB) can modify the characteristics of materials directly by bombardment the surface.HIPIB can also make the surface materials vaporization to form the eruption of plasma and therefore can be utilized to the growth of thin film and the preparation of nano-powders,etc.Tungsten has high melting point and good thermal conductivity,it is a material of the protective layer to resistant the high heat flux most likely.In order to study the response of tungsten under high heat load,... |
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| Keywords: | high-intensity pulsed ion beam tungsten temperature fields numerical method |
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