Simulation of spacesuit materials as radiation shield

In this thesis, the simulation of protective clothing materials was performed with Geant4 by considering the events occurring in the space environment. Since the design and production of space suits are costly, testing them in simulation programs before the actual production is important in terms of selecting the materials to be used. The simulated space suit is composed of five layers. In the layers created, from inside to outside; Water, polypropylene, Kevlar, polyethylene and gold materials were used. In these layers, the skeleton and tissue were defined to form the human tissue. The reason why water was preferred as a material in the first layer is that it acts as a protective shield against space radiation. The reason why polypropylene was preferred in the second layer is that it reduces the weight of the space suit considerably thanks to its lightweight structure and is durable and resistant to wear. Kevlar used in the third layer is the most preferred material in protective clothing. It has high strength and impact resistance. Polyethylene and gold used in the fourth and fifth layers, thanks to the flexible and composite structure of polyethylene, form a layered structure with gold and provide the protective material called gold-plated polyethylene "gold grafted polyethylene". Finally, particle-matter interaction was simulated by sending protons, electrons, neutrons, alpha and photon particles to the spacesuit modelled in the space environment with Geant4. As a result of the analysis, different interactions were observed in different layers. The interactions in the materials used in the layers change according to the type and energy of the particles sent.