This book provides the reader with a modern and comprehensive overview of nuclear polarization theory. The understanding of polarization phenomena greatly enriches data obtained from scattering and nuclear reactions by providing information on the interaction that can change spin orientation as well as important verification data for the study of nuclear structures and reaction mechanisms. The author methodically derives the polarization theory of nuclear reactions for various types of elastic scattering and two-body direct reactions between particles of different spin and unpolarized target nuclei with arbitrary spin, as well as the reactions between two polarized light particles and the polarization theory for photon beams. In addition, the polarization theories of relativistic nuclear reactions are rigorously covered in great scope and detail. A chapter on polarized particle transport theory presents the Monte-Carlo method for describing the transport of polarized particles and formalizes the polarized particle transport equation. Here, the author also illustrates a novel and concrete scheme for establishing a polarization nuclear database.

Nuclear polarization is important not only for microscopic nuclear structure and reaction studies but also for nuclear engineering, applied nuclear physics, and medical physics. With the development of radioactive beam facilities and, on the theoretical side, the development of consistent microscopic nuclear reaction and structure theories, this book on the polarization theory of nuclear reactions serves as a timely source of reference for students and researchers alike.

Qing-Biao Shen is a researcher at the China Institute of Atomic Energy (CIAE). He was born on September 1, 1938, in Guan County, Hebei Province. In 1963, he graduated from the University of Science and Technology of China with a degree in Physics under the tutelage of Mr. Hong-Yuan Zhu. In the same year, Mr. Shen joined the CIAE and from 1963 to 1965, participated in a group led by Min Yu and Zu-Qia Huang, working on hydrogen bomb theory. Since then, Mr. Shen's career has focused on low and medium energy nuclear reaction theory, nuclear many-body theory, and nuclear data theory, some of which he conducted while he was a visiting scholar at the University of Kentucky from 1985 to 1987.

Mr. Shen is the recipient of twelve National or Ministerial Science and Technology Progress Awards, including five inaugural prizes, and has published over 300 academic papers as either a lead author or co-author. He is the author of the book "Nuclear Reaction Theory of Low and Medium Energies". In addition, Mr. Shen developed the Skyrme force microscopic optical potential theory, a theory to this day best fitting experimental data.