Photoneutron reaction cross-section calculations in some osmium isotopes

Nuclear reaction and application of nuclear physics widespread recently. Especially the applications of nuclear physics, which progress parallel to technological developments, increase the number and importance of the studies in this subject. From nuclear reactors to medical medicine, astrophysics to shielding, a wide range of studies being conducted. In this thesis photoneutron reaction cross section of some osmium isotopes have been calculated which have important for medical medicine, radiation shielding and astrophysics. The preliminary identification, and identification of these cross section calculation is particularly important in terms of their application. Osmium, which is rare and heavy element, is also used in the medical device Linac. In this thesis; photoneutron reaction cross sections calculated by TALYS nuclear code of some Osmium isotopes, programme, which have an important role especially in medical physics, astrophysics and radiation shields, are compared with experimental results and interpreted.