• Scattering of neutrons on $\alpha$-particles in three-dimensional space

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    • Keywords


      Neutron energy; $\alpha$ scattering; three-dimensional space

    • Abstract


      This letter demonstrates that there are some mistakes in the article of Roshan et al (Pramana – J. Phys. 90(3): 30, 2018) in dealing with the scattering of neutrons on $\alpha$-particles in three-dimensional space. In fact, there is no one-to-one correspondence between the incident neutron energy and the scattering angle of the α-particle even if they have definite velocities before scattering. Instead, the situation is complex, and all the scattered $\alpha$-particles will emit in a cone, which is called the velocity cone. At each scattering angle, which is smaller than the apex angle of the velocity cone, there are two groups of $\alpha$-particles with different kinetic energies.

    • Author Affiliations



      1. School of Physics, Peking University, Beijing 100871, People’s Republic of China
      2. School of Basic Medical Sciences, Peking University, Beijing 100191, People’s Republic of China
    • Dates

  • Pramana – Journal of Physics | News

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