Active target measurement of the ³⁵Cl(n, p) and ³⁵Cl(n, α) cross sections

The ³⁵Cl(n, p) and ³⁵Cl(n, α) reactions are important inputs to designs of molten chloride fast reactors, a class of molten salt reactor utilizing chloride salts. There is presently a lack measurements in the range of 0.1 ‐ 0.6 MeV. We have measured these cross sections from 0.1 – 3.0 MeV utilizing a ⁶Li-enhanced (> 95%) CLYC detector as an active target; approximately 45% of the detector active target atoms are ³⁵Cl. The measurements were made with the 4.5 MV Tandem Pelletron, Beam Swinger, and Time-of-Flight Tunnel facilities at Edwards Accelerator Lab at Ohio University utilizing a ⁹Be(d, n) white-spectrum neutron source. The detector was placed at 5 m from the neutron source and the time-of-flight technique was used to measure neutron energies. A Geant4 simulation of the Time-of-Flight Tunnel and detector has been constructed. We present the measurements in the 0.1 - 0.6 MeV and compare to previous measurements in overlapping energy ranges.