DJERABA Aicha2026-06-292026-06-29https://dspace.univ-usto.dz/handle/123456789/762This handout is taken from the Quantum Mechanics II course that i have been teaching at Mohamed Boudiaf University of Science and Technology of Oran since 2012, initially for the Life Science Applied Physics (PASV) undergraduate degree and currently in Radiation Physics (Phy- Rays) for third-year students’ Bachelor's Degree. The syllabus for this course, defined by the Ministry of Higher Education and Scientific Research, will serve as the table of contents for our course material, entitled: Quantum Mechanics II (MQII). This teaching takes place during the fifth semester (S5) at the Faculty of Physics, in the Department of Energetic Physics and is intended for third-year undergraduate students (L3) in the field of Science and Materials (SM) Option Radiation Physics. Semester duration: 45.00 hours Weekly duration: 1.5 hours of lectures and 1.5 hours of tutorials. Coefficient: 02; Credit: 04. This course contains six main chapters: Chapter I: Review of the postulates of quantum mechanics Chapter II: 1D quantum harmonic oscillator Chapter III: Quantum angular momentum Chapter IV: The hydrogen atom Chapter V: Stationary perturbation theory Chapter VI: Introduction to the quantum scattering theory We will finalize this document with appendix and additional questions as well as a rich bibliography. A previous "version 1"of the Quantum Mechanics II course was developed in 2017/2018 written in French language. This "version 2" is written in English language in order to respond to the call of the Ministry of Higher Education and Scientific Research for the generalization of teaching in English language in Algerian universities. Note that version 2 contains many modifications compared to version 1. The version 2 is more complete compared to version 1. With a chapter I reviewing the postulates in order to initiate the calculation methods of quantum mechanics by detailed applications of the physical systems studied such as the quantum harmonic oscillator, the angular momentum and the hydrogen atom, stationary perturbations theory and an introduction to the quantum scattering theory. This version 2 is also enriched with solved exercises at the end of each chapter. Finally, it serves as a useful tool for the course in quantum mechanics at the Bachelor's level. It can be used as a supplement to courses, for example in atomic physics, radiations physics and also in master’s courses of medical physics.enQuantum mechanicsPostulatesEnergyWave functionEingenvalueEingenvectorOrbital momemtumSpinOther