Lin C H, Matsumoto J, Ohtake S, Imasaka T
Talanta. 1996 Nov;43(11):1925-9. doi: 10.1016/0039-9140(96)01978-9.
Mass spectra and ionization efficiencies of adenine were measured with nanosecond (15 ns) and femtosecond (500 fs) laser pulses at identical energy levels. A molecular ion is clearly observed in both spectra, but the efficiency is improved 10-fold when a femtosecond laser is used, indicating the distinct advantage of ultrashort laser pulses for multiphoton ionization of nucleobases in supersonic jet spectrometry.
在相同能量水平下，使用纳秒（15纳秒）和飞秒（500飞秒）激光脉冲测量了腺嘌呤的质谱和电离效率。在两个光谱中均清晰观察到分子离子，但使用飞秒激光时效率提高了10倍，这表明在超声速喷射光谱法中，超短激光脉冲对核碱基进行多光子电离具有明显优势。
