As evidenced by the field’s existence surpassing a 100 years, nuclei are varied and immensely complex. New accelerator facilities are now able to produce rare isotopes that seldom appear in nature and whose properties must be measured to lead to a better understanding of the nuclear force. These facilities have naturally facilitated the need to switch to inverse kinematics. This, coupled with the low intensity of rare isotope beams, has lead to the creation of a new type of detector called an active target. These detectors are especially well-suited for rare isotope beams due to their high luminosity, theoretical 4? solid angle coverage, and ability to determine the vertex of a nuclear reaction.One such active target is the Active Target-Time Projection Chamber (AT-TPC) housed at the Facility for Rare Isotope Beams. This thesis reports the results from the first transfer reaction measurement by the AT-TPC in inverse kinematics. Specifically, 11Be spectroscopy was performed via the 10Be(?, ?) reaction. 11Be is an ideal candidate for such a commissioning measurement as the structure of its low-lying states is well known, allowing for comparisons to the literature. Despite this, the parity of its fourth excited state at 3.40 MeV has been debated. This thesis measured the angular distributions of all states in 11Be up to and including this state. Their spectroscopic factors were derived and compared to values in the literature and theoretical shell-model interactions. Reasonable agreement was found between the average derived factors, literature, and WBP and YSOX calculations. Although the coverage of the 3.40 MeV state’s angular distribution is too limited for a definitive parity assignment, it and the spectroscopic analysis tentatively support a positive parity. The implications of this assignment on the rotational structure, 0?3/2 effective single-particle energy, and spin-orbit splitting of the 0? orbitals in 11Be are explored.
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