Large Longitudinal Spin Alignment Generated in Inelastic Nuclear Reactions

Daniel Hoff, Department of Physics, Washington University
April 6, 2018 at 4:00 pm
204 Crow
Event Description 

E/A=24 MeV Li-7 projectiles, inelastically excited by collisions with Be, C, and Al targets, are found to have large longitudinal spin alignment when the targets remain in their ground state. The observed alignment is consistent with an alignment mechanism stemming from an angular-momentum-excitation-energy mismatch. The longitudinal spin alignment of 7Li* [4.63 MeV] is well described by a DWBA cluster-model (α+t). The longitudinal spin alignment of several other systems is also well described by DWBA calculations, including one where a cluster model is inappropriate, demonstrating the proposed alignment mechanism is a more general phenomenon.