RADIOLYTIC EFFECTS IN ORGANIC-COMPOUNDS INDUCED AND ANALYZED BY A N-15 BEAM

Cd-arachidat in the form of Langmuir-Blodgett films and thick photores ist layers of AZ5412H have been exposed to N-15-ion beams. The physico -chemical state of these targets as a function of the N-15 fluence has been monitored by the N-15 nuclear reaction with the respective H com ponent. 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 X 10(16) N /cm2 at temperatures as low as 40 K. The correlated changes in H bondi ng, obtained by analyzing the concomitant Doppler widths as a function of the 15 N fluence, consist of both decomposition and restoration of C-H and H-H molecular groups.