Ion Track Technology


Reimar Spohr

PostHeaderIcon Abstract

Small Angle Neutron Scattering from Oriented Latent Nuclear Tracks. D. Albrecht, P. Armbruster, M. Roth, R. Spohr. Radiation Effects 65(1982)145-148.

Parallel arrays of long cylindrical objects with vanishing distance correlation and defined orientation, such as latent nuclear tracks, generated at the heavy ion accelerator facility GSI Darmstadt, represent an almost ideal case for a scattering experiment. A feasibility study has been conducted, using small angle neutron scattering, yielding the following results:

1) In contrast to transmission electron microscopy, the technique is virtually non-destructive and suitable also for low melting point organic materials.

2) Observation times between 0.1 and 1 h were sufficient at the neutron small-angle scattering apparatus D17 at ILL, Grenoble. Latent tracks at areal densities <3*10^11 ions per cm^2 could be observed, safely below the track interference limit between neighbouring tracks.

3) Small-angle neutron scattering yields intense two-dimensional scattering distributions from which equivalent track radii can be determined.