| TATB基PBX纳米孔隙的正电子湮没寿命谱 |
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| 引用本文： | 杨仍才,田勇,张伟斌,杜宇.TATB基PBX纳米孔隙的正电子湮没寿命谱[J].含能材料,2011,19(2):200-203. |
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| 作者姓名： | 杨仍才 田勇 张伟斌 杜宇 |
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| 作者单位： | 中国工程物理研究院化工材料研究所,四川绵阳,621900 |
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| 基金项目： | 国防预研（42604030401） |
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| 摘 要： | 为研究压制参数对TATB基高聚物粘结炸药(PBX)微观结构的影响,压制了密度为1.6～1.9 g·cm-3的PBX,采用了正电子湮没寿命谱(PALS)技术表征了其微观结构,讨论了不同压制密度PBX的纳米孔隙的变化.结果显示:压制密度越大,PBX中纳米孔隙浓度越小,平均尺寸越大,这表明压制过程中,PBX界面孔隙不断减小,...
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| 关 键 词： | 高能物理学 TATB基PBX 压制 纳米孔隙 正电子湮没寿命谱 |
| 收稿时间： | 4/14/2010 8:17:48 PM |
| 修稿时间： | 2010/10/31 0:00:00 |
Study on Positron Lifetime of Nano-void of TATB-based PBX |
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| YANG Reng-cai,TIAN Yong,ZHANG Wei-bin and DU Yu.Study on Positron Lifetime of Nano-void of TATB-based PBX[J].Chinese Journal of Energetic Materials,2011,19(2):200-203. |
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| Authors: | YANG Reng-cai TIAN Yong ZHANG Wei-bin and DU Yu |
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| Affiliation: | Institute of Chemical Materials,Institute of Chemical Materials,Institute of Chemical Materials,Institute of Chemical Materials |
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| Abstract: | Several groups of TATB-based PBX specimen with same components but different densities are prepared by different press intensities, and their positron lifetime spectra are measured. The spectra show that the positronium formation is negligible in TATB-based PBX, therefore the 2-component fit is applicable. The result shows an increasing dimension but decreasing concentration of nano-void during PBX pressing, which means the nano-void in TATB crystalline increased due to the damage and crack under pressure, however the nano-void of intergranular interface decreased. |
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| Keywords: | high-energy physics TATB-based PBX pressing nano-void positron annihilation lifetime spectroscopy |
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