The research of the dose distribution of neutron excitation gamma rays

In this paper, by simulating the six kinds of neutron energy spectra, which were located in five kinds of height within the range of Om to 120m, the gamma dose of the six measuring points in the range of 100m~1km is studied. By the study of the dose of the height of the source and the distance of the source heart projection point, the optimal height was obtained when the distance of the center of the center was fixed. This optimal height made the neutron energy spectrum the maximum amount of dose in the measurement point. The relationship between the source height h and the distance x from the source center was met with h=0.3*x. In the condition of the height constant, the dose of the measuring point decreases with the increase of the distance of the center of the center. This was independent of the type of neutron energy spectrum. By means of the dose of different neutron energy spectra, the neutron energy spectrum of the neutron bomb was the maximum amount of dose in the measurement point from the source heart projection point of 200m to 1km. The “fat man” neutron energy spectrum was the minimum dose in the measurement point, and was not related to the high source of the neutron spectrum.