discussion During the experiments, SEM and TEM images of SiO2 nano particles have been taken in different magnification. The ma in purpose of scanning the images in low magnification orders is to observe the nano particles adhesion in micron size in the samples. So, if nano particles changed to micro-size cluster by adhesion, in this case, it is impossible to observe the existing clusters in nano images in ×50.000 and more magnification. Therefore, first let us review SEM images scanning with micron-size images and ×5.000 and ×20.000 magnification (1 m index) (Fig. 1).From the figures, it is seen that before (control sample)and after irradiation there is not any change in the general background of the image (Fig. 1a–d). According to SEM images shown in Fig. 1, we can say that SiO2 nano particles do not change to large-size “combination” (clusters) under the influence of neutron flux. And now let us review relatively big magnification in order to observe the clusters that can be generated in several hundred nano meter (Fig. 2).So, in this case, we will review SEM images taken with×50.000 magnification (100 nm index). In this case, it is possible to observe bigger nano clusters, which can be formed in nano size, however in this case also the clusters are not observed. Obviously, to these SEM images clusters with the sizes of 200 nm to 1 m are not observed.Now let us review TEM images for analyzing the compound of the nano particles (2–5 nano particles with the diameter of50 nm) in the smaller size (Fig. 3).TEM images shown in Fig. 3, have been taken up to×1.200.000 magnification (10 nm index). From TEM images(Fig. 3a and b) of the initial nano particles it is seen that, all particles has 20 nm size in the samples. This shows that practically the process of “adhesion” does not occur in the initial sample without external influence. In other words, the experimental sample consists of pure nano particles, which has20 nm particles diameter. Moreover, other two TEM images shown in Fig. 3c and d, we can say that new nano particles with about 70 nm size are generated in the sample by very little “adhesion” under the influence of neutron irradiation.And this small amount “adhesion” direct influence to electro physical properties of nano materials [11–14]. Furthermore,in order to study the lattice structure of SiO2 nano particles, it has been carried out SAED analyses for the samples exposed to neutron flux influence and initial circumstance in TEM device(Fig. 4).