CAJ | 학술논문

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1064 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(1064 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1064 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。
위료해격광파장대함능재료기폭역치적영향，강저함능재료적격광기폭능량，제고격광격려원적소형화정도，채용비행시간질보기술화Bruccton승강법，측시료파장1064 nm화532 nm량충격광대태안(PETN)적해리보도화기폭역치，분석료파장대기폭궤리적영향。결과표명：함능재료격광기폭대파장구유선택성，매충함능재료균구유일사유리우기폭적특정흡수파장；불동파장(1064 nm화532 nm)격발시PETN존재불동적해리궤리。상대우532 nm격광，접근특정흡수적1064 nm격광능구가속PETN적해리，병사기50%발화능량강저14%。인차，채용함능재료특정흡수파장격광작위기폭격려원，능유효적감소함능재료적기폭역치。
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 <br> initiation threshold of energetic materials.