Alpha, Beta, Gamma

1234567891011
Across
  1. 2. Alpha particles consist of these atoms' nuclei
  2. 3. High energy, short wavelength electromagnetic wave
  3. 6. Device used to detect radiation
  4. 7. Heaviest type of radiation particle
  5. 9. Time taken for half of a radioactive substance to decay
  6. 11. Uncharged electromagnetic radiation
Down
  1. 1. Particle ejected during beta decay
  2. 4. Material that can stop beta radiation
  3. 5. Process where unstable nuclei emit radiation
  4. 7. Number of protons in a nucleus
  5. 8. Radiation that is stopped by paper
  6. 10. Beta particles are identical to these subatomic particles