Collection of spectra of direct photons recorded in ISO neutron fields

Compilation of prompt photon spectra recorded in ISO neutron fields produced at PIAF (PTB accelerator facility) by using a 1.5'' x 1.5'' CeBr3 detector. This data set is an appendix to the article “Quantitative investigation of gamma radiation in accelerator produced ISO neutron fields” by H. Dombrowski and R. Nolte. The spectra are depicted in this article. The time-of-flight method was used to detect direct photons. By performing shadow cone measurements, a background subtraction was performed. In addition, the random background was subtracted. The latter consists of net spectra (likewise foreground minus shadow cone background spectra), which were recorded using a time-of-flight window located earlier on the timeline than the arrival of the prompt photons.