Diffuse reflectance pulse radiolysis of opaque samples

Flash photolysis and pulse radiolysis techniques have contributed substantially to understanding the harmful and beneficial effects of radiation. Many of the most important radiation-induced processes involve non-transparent, heterogeneous systems, for example, most biological systems. The first successful 'diffuse-reflectance pulse radiolysis' experiments which demonstrate that time-dependent absorption spectra of short-lived species can now be measured for opaque samples following pulse radiolysis are reported. (author)