nuclear physicist
A scientist specializing in nuclear physics. The term is straightforward and used in academic and professional contexts.
She works at a research institute as a nuclear physicist.
To become a nuclear physicist, you need to major in physics in graduate school.
Refers to the field of nuclear physics, while 原子物理学者 is the person who practices it.
Compound of 原子 (atom), 物理 (physics), and 学者 (scholar). The term is a straightforward modern coinage for a specialist in nuclear physics.