On the Primary Ionization Mechanism(s) in Matrix-Assisted Laser Desorption Ionization

Figure 2

Molecular ionic species (positive ions: (a), (c), (e); negative ions: (b), (d), (f)) generated by laser irradiation of HCCA, DHB, and SA.

(a)

(b)

(c)

(d)

(e)

(f)