Across
- 4. Recording when a radioactive source is used, and what for
- 5. This type of radiation can be stopped by a sheet of paper
- 6. Electrons are found in an atom's ...
- 8. When radiation is used to follow an unseen structure, such as inside the body
- 11. Measures actual damage done to a body - takes the type of radiation into account
- 14. Radiation is dangerous because it is...
- 17. When a nucleus splits to release 2 daughter nuclei and neutrons
- 18. The location of protons and neutrons in an atom
- 20. Complete the sentence - "The moderator _ _ the neutrons in a nuclear reactor."
- 21. The number of nuclei decaying per second in a radioactive source
- 22. One of these is needed to induce Uranium-235 to split
- 23. The is divided by the mass of a body to give the absorbed dose
- 24. Nuclear reactor control rods are made out of these
- 25. Used as a protective shield around a nuclear reactor
Down
- 1. High energy electromagnetic wave
- 2. Used as the moderator inside a nuclear reactor
- 3. The process when an atom gains or loses an electron to become a charged ion
- 7. These contain the uranium fuel for a nuclear reactor
- 9. Radiation from this needs to be subtracted from any readings to get the corrected count rate
- 10. If a nucleus has more than this many protons it can never be stable
- 12. Complete the sentence. "To reduce radiation dose, limit exposure, add shielding, and increase _"
- 13. Complete the sentence - "The half-life of a tracer wants to be as _ as possible"
- 15. The time taken for the amount of a radioactive source to decrease by one half
- 16. Gamma is used as a tracer because it is the most ...
- 19. Name given to treatment for cancer using gamma rays
- 24. This type of radiation is a very fast electron