Why the distance shielding for Gamma ray and Emitted Neturon is different?

Answer 1

Gamma rays are a form of electromagnetic radiation, and are absorbed by heavy materials such as lead which is often used for such shielding. Neutrons are uncharged particles which can pass through many materials, but are strongly absorbed by for example cadmium and boron, which are said to have a high capture cross section for neutrons. Therefore effective neutron shields can use such materials.

Answer 2

The distance shielding for gamma rays and emitted neutrons is different because they have different characteristics. Gamma rays are high-energy electromagnetic radiation that can be shielded by dense materials like lead or concrete. Neutrons are neutral subatomic particles that require materials with high hydrogen content, such as water or paraffin, to effectively shield against them due to their interactions with hydrogen atoms.