Supersonic Jet/Time-of-flight mass spectrometry of adenine using nanosecond and femtosecond lasers.
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.
Lin
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Matsumoto
J
J
Ohtake
S
S
Imasaka
T
T