Radiolytic effects in organic compounds induced and analyzed by a 15N beam

Cd-arachidat in the form of Langmuir-Blodgett films and thick photoresist layers of AZ5412H have been exposed to 15N-ion beams. The physico-chemical state of these targets as a function of the 15N fluence has been monitored by the 15N nuclear reaction with the respective H component. In this way, radiolytic changes in H distribution and bonding have been measured. In particular, diffusion and desorption processes have quantitatively been followed up to fluences of about 1 × 1016 N/cm2 at temperatures as low as 40 K. The correlated changes in H bonding, obtained by analyzing the concomitant Doppler widths as a function of the 15N fluence, consist of both decomposition and restoration of C-H and H-H molecular groups.