prove that the sum of angle of scattering and angle of recoil make 90

1.	prove that the sum of angle of scattering and angle of recoil make 90 degrees in an elastic collision in 2 dimensions
Answer» Answer: Elastic scattering leads to the loss of kinetic energy (slowing down) of NEUTRONS by billiard ball-type collisions. This process leads to the generation of highly energetic RECOIL nuclei, which lose energy by excitation and ionization of the surrounding material. The recoil process is governed by the LAWS of conservation of momentum and energy. Up to half of the kinetic energy of a neutron is lost on COLLISION with a hydrogen nucleus, since the masses are almost equal. THUS, materials with high hydrogen content, such as water or paraffin wax, are effective for neutron shielding.

prove that the sum of angle of scattering and angle of recoil make 90 degrees in an elastic collision in 2 dimensions

Answer»

Answer:

Elastic scattering leads to the loss of kinetic energy (slowing down) of NEUTRONS by billiard ball-type collisions. This process leads to the generation of highly energetic RECOIL nuclei, which lose energy by excitation and ionization of the surrounding material. The recoil process is governed by the LAWS of conservation of momentum and energy. Up to half of the kinetic energy of a neutron is lost on COLLISION with a hydrogen nucleus, since the masses are almost equal. THUS, materials with high hydrogen content, such as water or paraffin wax, are effective for neutron shielding.

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