The photoionization of H
2 by photons of sufficiently short wave length produces the molecular ion H
2+ as well as the atomic ion H
+. The relative yield H
+/H
2+ has been calculated as the function of energies of photons. The description of the ground state of H
2 is given by the superpositon of two configurations: σ
g2+λσ
u2, taking account of the spatial correlation between electrons, while those of H
2+ by the linear combinations of Wang type atomic orbitals. The results show that the relative yield curve has a plateau in the high-energy range and its height is essentially proportional to λ
2. The various approximations used in our calculation (Franck Condon approximation, Born approximation, dipole velocity approximation, the neglect of possibility of production of H
2+ and H
+ through autoionization and multiple ionization etc.) have been carefully discussed. The velocity distribution of the ejected protons has also been calculated according to the Franck Condon principle.
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