TY - RPRT TI - Solar Energetic Particle Acceleration at a Spherical Shock with the Shock Normal Angle $θ$ $B_n$ Evolving in Space and Time AU - Chen, Xiaohang AU - Giacalone, Joe AU - Guo, Fan PY - 2022 DO - 10.3847/1538-4357/ac9f43 UR - https://www.osti.gov/biblio/2507008 ID - 2507008 ER -