Input interpretation
kinetic energy of particle | incident particle | e^- (electron) radiation absorber | potassium thickness | 20 cm
Result
45 MeV (megaelectronvolts)
Comparison as energy for 45 MeV
≈ ( 0.047 ≈ 1/21 ) × mass-energy of a proton ( 1 m_p c^2 )
≈ ( 0.21 ≈ 1/5 ) × QCD scale ( ≈ 217 MeV )
≈ ( 0.22 ≈ 1/4 ) × average total energy released in fission of one U-235 atom ( ≈ 3.2×10^-11 J )
Properties
shielding thickness | 20 cm CSDA range | 17.2 g/cm^2 stopping power | 4.05 MeV/(g/cm^2) collision stopping power | 1.86 MeV/(g/cm^2) radiative stopping power | 2.19 MeV/(g/cm^2) radiation yield | 0.331 density effect parameter | 3.68
Range versus energy
Range versus energy
Radiation yield versus energy
Range versus energy Radiation yield versus energy
Density effect parameter versus energy
Range versus energy Density effect parameter versus energy
Stopping power versus energy
Stopping power versus energy
Absorber material properties
atomic number (Z) | 19 atomic mass number (A) | 39.0983 〈Z/A〉 | 0.48595 nuclear collision length (λ_T) | 75.4 g/cm^2 nuclear interaction length (λ_I) | 119 g/cm^2 radiation length (X_0) | 17.32 g/cm^2 minimum ionization (- dE/ dx |_ min) | 1.623 MeV/(g/cm^2) density | 860 g/L mean excitation energy | 190 eV Molière radius | 11.61 g/cm^2 pion collision length | 101 g/cm^2 pion interaction length | 148.1 g/cm^2 plasma energy | 18.65 eV