激光波长对含能材料起爆阈值的影响

刘建; 吴立志; 蒋小华; 沈瑞琪; 张伟; 步磊

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激光波长对含能材料起爆阈值的影响

刘建, 吴立志, 蒋小华, 沈瑞琪, 张伟, 步磊

文章导航 > 红外与激光工程 > 2014 > 43(10): 3309-3312

刘建, 吴立志, 蒋小华, 沈瑞琪, 张伟, 步磊. 激光波长对含能材料起爆阈值的影响[J]. 红外与激光工程, 2014, 43(10): 3309-3312.

引用本文:

刘建, 吴立志, 蒋小华, 沈瑞琪, 张伟, 步磊. 激光波长对含能材料起爆阈值的影响[J]. 红外与激光工程, 2014, 43(10): 3309-3312.

Liu Jian, Wu Lizhi, Jiang Xiaohua, Shen Ruiqi, Zhang Wei, Bu Lei. Effect of laser wavelengths on initiation threshold of energetic materials[J]. Infrared and Laser Engineering, 2014, 43(10): 3309-3312.

Citation:

Liu Jian, Wu Lizhi, Jiang Xiaohua, Shen Ruiqi, Zhang Wei, Bu Lei. Effect of laser wavelengths on initiation threshold of energetic materials[J]. Infrared and Laser Engineering, 2014, 43(10): 3309-3312.

激光波长对含能材料起爆阈值的影响

1.
中国工程物理研究院化工材料研究所,四川绵阳 621900;
2.
南京理工大学化工学院,江苏南京 210094

基金项目:

中国工程物理研究院科学技术发展基金(2011B0101019)

详细信息

作者简介:
刘建(1983-),男,助理研究员,硕士,主要从事激光起爆、MEMS火工品设计方面的研究。Email:caeplj@163.com

中图分类号: TJ55;TQ560

Effect of laser wavelengths on initiation threshold of energetic materials

1.
Institute of Chemical Materials,China Academy of Engineering Physics,Mianyang 621900,China;
2.
School of Chemical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China

摘要: 为了解激光波长对含能材料起爆阈值的影响,降低含能材料的激光起爆能量,提高激光激励源的小型化程度,采用飞行时间质谱技术和Bruccton升降法,测试了波长1 064 nm和532 nm两种激光对泰安(PETN)的解离谱图和起爆阈值,分析了波长对起爆机理的影响。结果表明:含能材料激光起爆对波长具有选择性,每种含能材料均具有一些有利于起爆的特征吸收波长;不同波长(1 064 nm和532 nm)激发时PETN存在不同的解离机理。相对于532 nm激光,接近特征吸收的1 064 nm激光能够加速PETN的解离,并使其50%发火能量降低14%。因此,采用含能材料特征吸收波长激光作为起爆激励源,能有效的减少含能材料的起爆阈值。
- 激光起爆 /
- 含能材料 /
- 激光波长 /
- 起爆阈值
Abstract: In order to understand the effect of laser wavelengths on initiation threshold, reduce the laser initiation energy of energetic materials, and improve miniaturization design of excitation source of laser initiation, dissociation spectral and initiation threshold of pentaerythritol tetranitrate(PTEN) under wavelength 1 064 nm and 532 nm laser were tested by time-of-flight mass spectrometer and bruccton up and down method, and effect of laser wavelengths on initiation mechanism was analysed. Results show that laser initiation of energetic materials has selectivity for wavelengths, and every kind of energetic material possess some characteristic absorption wavelengths which are beneficial to laser initiation. There are different dissociation mechanisms for different laser wavelengths(1 064 nm and 532 nm). Compared with 532 nm laser, 1 064 nm laser, which close to characteristic absorption of PETN, can accelerate dissociation of PETN, and decrease 50 percent firing energy by 14 percent. Therefore, using characteristic absorption wavelengths of energetic materials as excitation source of laser initiation, can effectively reduce initiation threshold of energetic materials.
- laser initiation /
- energetic materials /
- laser wavelength /
- initiation threshold

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激光波长对含能材料起爆阈值的影响

1. 中国工程物理研究院化工材料研究所,四川绵阳 621900;

2. 南京理工大学化工学院,江苏南京 210094

作者简介:
刘建(1983-),男,助理研究员,硕士,主要从事激光起爆、MEMS火工品设计方面的研究。Email:caeplj@163.com

收稿日期: 2014-02-22
修回日期: 2014-03-25
刊出日期: 2014-10-25

基金项目:

中国工程物理研究院科学技术发展基金(2011B0101019)

中图分类号: TJ55;TQ560

关键词:

摘要: 为了解激光波长对含能材料起爆阈值的影响,降低含能材料的激光起爆能量,提高激光激励源的小型化程度,采用飞行时间质谱技术和Bruccton升降法,测试了波长1 064 nm和532 nm两种激光对泰安(PETN)的解离谱图和起爆阈值,分析了波长对起爆机理的影响。结果表明:含能材料激光起爆对波长具有选择性,每种含能材料均具有一些有利于起爆的特征吸收波长;不同波长(1 064 nm和532 nm)激发时PETN存在不同的解离机理。相对于532 nm激光,接近特征吸收的1 064 nm激光能够加速PETN的解离,并使其50%发火能量降低14%。因此,采用含能材料特征吸收波长激光作为起爆激励源,能有效的减少含能材料的起爆阈值。

English Abstract

Effect of laser wavelengths on initiation threshold of energetic materials

1. Institute of Chemical Materials,China Academy of Engineering Physics,Mianyang 621900,China;

2. School of Chemical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China

Received Date: 2014-02-22
Rev Recd Date: 2014-03-25
Publish Date: 2014-10-25

Keywords:

Abstract: In order to understand the effect of laser wavelengths on initiation threshold, reduce the laser initiation energy of energetic materials, and improve miniaturization design of excitation source of laser initiation, dissociation spectral and initiation threshold of pentaerythritol tetranitrate(PTEN) under wavelength 1 064 nm and 532 nm laser were tested by time-of-flight mass spectrometer and bruccton up and down method, and effect of laser wavelengths on initiation mechanism was analysed. Results show that laser initiation of energetic materials has selectivity for wavelengths, and every kind of energetic material possess some characteristic absorption wavelengths which are beneficial to laser initiation. There are different dissociation mechanisms for different laser wavelengths(1 064 nm and 532 nm). Compared with 532 nm laser, 1 064 nm laser, which close to characteristic absorption of PETN, can accelerate dissociation of PETN, and decrease 50 percent firing energy by 14 percent. Therefore, using characteristic absorption wavelengths of energetic materials as excitation source of laser initiation, can effectively reduce initiation threshold of energetic materials.