11. Being composed of charged particles, beta radiation is more strongly ionizing than gamma radiation. 12. As a result, some have turned to beta radiation . 13. Beta radiation can be blocked by wood or aluminum.14. Measures of beta radiation were excluded from the report. 15. His early research, under Hans Geiger, showed that beta radiation produces a continuous electromagnetic spectrum. 16. Dr . Mark Harrison, Angiorad's co-founder, said he doesn't think beta radiation penetrates deep enough. 17. This is a novel way to deliver high doses of beta radiation to kill tumours. 18. Most fission products emit both gamma and beta radiation . 19. Iodine-131 in the body rapidly accumulates in the thyroid gland, becoming a source of beta radiation . 20. Radioluminescent paint contains a beta radiation ), preferred since this radiation will not penetrate an enclosure.