Comparative study of femtosecond and nanosecond laser-induced breakdown spectroscopy of depleted uranium

Luke A. Emmert; Rosemarie C. Chinni; David A. Cremers; C. Randy Jones; Wolfgang Rudolph

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Comparative study of femtosecond and nanosecond laser-induced breakdown spectroscopy of depleted uranium

机译：飞秒和纳秒激光诱导的贫铀击穿光谱的比较研究

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We present spectra of depleted uranium metal from laser plasmas generated by nanosecond Nd:YAG (1064nm) and femtosecond Ti:sapphire (800nm) laser pulses. The latter pulses produce short-lived and relatively cool plasmas in comparison to the longer pulses, and the spectra of neutral uranium atoms appear immediately after excitation. Evidence for nonequilibrium excitation with femtosecond pulses is found in the dependence of spectral line intensities on the pulse chirp.

机译：我们展示了由纳秒级Nd：YAG（1064nm）和飞秒Ti：蓝宝石（800nm）激光脉冲产生的激光等离子体中的贫化铀金属光谱。与较长的脉冲相比，后一个脉冲产生的等离子体寿命较短且相对凉爽，激发后立即出现中性铀原子的光谱。飞秒脉冲引起的非平衡激发的证据是光谱线强度对脉冲chi的依赖性。

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《Applied optics》 |2011年第3期|共5页
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Luke A. Emmert; Rosemarie C. Chinni; David A. Cremers; C. Randy Jones; Wolfgang Rudolph;
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1. Comparative study of femtosecond and nanosecond laser-induced breakdown spectroscopy of depleted uranium [J] . Luke A. Emmert, Rosemarie C. Chinni, David A. Cremers, Applied optics . 2011,第3期

机译：飞秒和纳秒激光诱导的贫铀击穿光谱的比较研究
2. Comparison of sample temperature effect on femtosecond and nanosecond laser-induced breakdown spectroscopy [J] . Miao LIU, Anmin CHEN, Yutong CHEN, 等离子体科学和技术（英文版） . 2021,第007期
3. Enhanced optical emission in laser-induced breakdown spectroscopy by combining femtosecond and nanosecond laser pulses [J] . Wang Ying, Chen Anmin, Zhang Dan, Mathematical research letters: MRL . 2020,第2期

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4. Comparison of Femtosecond and Nanosecond Boron Isotopic Ratio Measurements with Laser-induced Breakdown Spectroscopy [C] . Phyllis Ko, Ben Yee, Kyle Hartig, INMM annual meeting . 2013

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5. Characterization of ablation and atomic emission enhancements in dual-pulse laser-induced breakdown spectroscopy using femtosecond- and nanosecond-pulse lasers. [D] . Scaffidi, Jonathan Peter. 2005

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Comparative study of femtosecond and nanosecond laser-induced breakdown spectroscopy of depleted uranium

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