P1 Electron Spin Resonance (ESR) bench top system 1 EA - Each 70 days after award 41100000 - Equip: Dorm/Clssrm Minimum requirements: X-Band operating frequency. Sensitivity 10^8 spins/G or better. Microwave power 1 uW to 100 mW. Magnetic field sweep = 6500 G. Field stability 10 mG/h or better and homogeneity of 50 mG or better. Weight 75 kg or less. P2 Desktop PC 1 EA - Each 70 days after award 43210000 - Computer Hrdwre/Supplies Minimum requirements: 1 Ethernet Port. Intel® Core™ i7 Processor. 32 GB RAM. 2x 1 TB SSD Storage, Windows 10 Pro or successor. P3 Variable temperature Controller and attachment for ESR system 1 EA - Each 70 days after award 41100000 - Equip: Dorm/Clssrm Minimum requirements: Temperature range 93 K to 473 K. Preferred cryogen: Liquid nitrogen. Liquid nitrogen Dewar provided with the system. P4 77 K cold finger Dewar for liquid nitrogen measurements 1 EA - Each 70 days after award 41100000 - Equip: Dorm/Clssrm Minimum requirements: holds 50 mL of liquid nitrogen. Adaptors and holders compatible with the ESR system cavity are provided. P5 Quartz Sample tubes 1 EA - Each 70 days after award 41100000 - Equip: Dorm/Clssrm Requirements: 260 mm length x 4 mm O.D. Synthetic Quartz P6 Installation & Training 1 EA - Each 70 days after award To include on-site training for sample preparation, room temperature and variable temperature measurements, software use and data analysis for 2 senior researchers and 2 graduate students (3-4 hours).