Low energy x ray facility

In the generalized theory of dual radiation action γ(x) is a fundamental function which is a measure of the probability that two energy deposits separated by a distance x will form a radiation lesion. The molecular on experiment was designed to determine this function. It is however clear that γ(x) can also be evaluated from the results of experiments with soft x-rays (energies between 0.3 and 4.5 keV). Although this approach presents difficulties because of varying LET of the photoelectrons produced by these radiations it has the important advantage that it can resolve (at least in principle) the function at smaller values of x. Our interest in exploring this method was enhanced by the finding that the theory can be successfully applied to soft x ray data and the values of γ(x) yielded are at least similar to those found in the molecular ion experiment. 4 references, 1 figure