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VOLUME 36 (1982) | ISSUE 2 | PAGE 29
Detachment of chromophore ions from a complex molecule on a surface by picosecond UV laser pulses
A preferential desorption of chromophore ions has been observed during the bombardment of a solid-phase peptide containing an aromatic chromophore by 5-ps laser pulses at a wavelength λ = 266 nm. When the pulse length is increased to 20 ns, the mass spectrum of the ions produced is dominated by heavy masses, ranging up to the molecular level.