Search for Cluster Structure in $^{14}$C by Investigation of ${^{10}}$Be + ${^4}$He Resonant Scattering with the Prototype AT-TPC

A half-scale prototype Active Target-Time Projection Chamber (AT-TPC) was built at the National Superconducting Cyclotron Laboratory (NSCL) as part of the development of the full-scale AT-TPC device. The prototype AT-TPC was used to investigate $^{14}$C cluster structures by way of a 38 MeV $^{10}$Be beam incident on a 90:10 He:CO$_2$ active target gas at the University of Notre Dame in October 2011. The $^{10}$Be beam was produced by Notre Dame's TwinSol and delivered to the prototype AT-TPC. Multiple resonances in scattering $^{10}$Be on ${^4}$He were observed. Spins and parities of resonances were determined. The resonances' relevance to $^{14}$C clustering will be discussed and presented. This work was partially supported by the US NSF under Contract No. PHY-0923087.