Textbook in PDF format This book serves as a thorough reference for students, researchers, and professionals in nuclear engineering and reactor physics, offering a detailed exploration of the core principles behind nuclear reactor theory, neutron transport, neutronic analysis, and reactor core design and calculations. Each chapter includes at least one example to illustrate the topics covered, and the latter half focuses on key areas relevant to operating reactors – reactor kinetics/dynamics and in-core fuel management. Building on the foundational physics presented in the first half, it develops reactivity models using realistic reactor cross-section data and advanced analytic tools. This book is a valuable resource for engineers and scientists in the nuclear industry, as well as senior and graduate students in Nuclear Engineering, Mechanical Engineering, and Physics