NSUF 23-1856: Mesoscale irradiation of HT-9

This proposal aims to bridge the gab between neutrons and ion beam irradiation as well as between nanoscale mechanical testing and macroscale mechanical testing and features the mesoscale approach of nuclear materials evaluation. Furthermore, we aim to compare the displacement damage created by Helium ions and protons and directly compare it to neutron irradiation performed through previous experiments. We will use mesoscale tensile testing on high energy Helium and proton irradiated materials and evaluate if the change in mechanical property matches previously neutron irradiated materials. The material studied is HT-9. The 27MeV Helium and 6-8MeV proton irradiation is carried out at Lawrence Livermore CAMS facility. We will utilize recently introduced mesoscale tensile testing to evaluate the property change of the material. Furthermore, TEM examination will allow us to draw direct comparison to previously neutron irradiated samples. This proposal will answer the following questions: • Does displacement damage produced by protons, high energy helium and neutrons lead to the same change in mechanical properties? • Can we obtain bulk property data on mesoscale samples • Does the novel approach of mesoscale sample testing lend itself to characterize mechanical property changes due to ion beam irradiation.

Additional Info

Field	Value
Abstract	This proposal aims to bridge the gab between neutrons and ion beam irradiation as well as between nanoscale mechanical testing and macroscale mechanical testing and features the mesoscale approach of nuclear materials evaluation. Furthermore, we aim to compare the displacement damage created by Helium ions and protons and directly compare it to neutron irradiation performed through previous experiments. We will use mesoscale tensile testing on high energy Helium and proton irradiated materials and evaluate if the change in mechanical property matches previously neutron irradiated materials. The material studied is HT-9. The 27MeV Helium and 6-8MeV proton irradiation is carried out at Lawrence Livermore CAMS facility. We will utilize recently introduced mesoscale tensile testing to evaluate the property change of the material. Furthermore, TEM examination will allow us to draw direct comparison to previously neutron irradiated samples. This proposal will answer the following questions: • Does displacement damage produced by protons, high energy helium and neutrons lead to the same change in mechanical properties? • Can we obtain bulk property data on mesoscale samples • Does the novel approach of mesoscale sample testing lend itself to characterize mechanical property changes due to ion beam irradiation.
Award Announced Date	2023-02-08T10:51:34.757
Awarded Institution	None
Facility	None
Facility Tech Lead	Peter Hosemann, Scott Tumey
Irradiation Facility	Center for Accelerator Mass Spectrometry
PI	Peter Hosemann
PI Email	[email protected]
Project Type	RTE
RTE Number	4534