l. Radioactivity a. Concept of radioactivity resulting from atomic detonations b. Definition of the following terms: radiation, alpha particle, beta particle, gamma radiation, decay, fission, curie, roentgen, milliroentgen per hour, radiation intensity, and attenuation Cc. 2. 3. 4. Range and energy relations of fission-product radiations Biological effects a. Concept of ionization b. External and internal radiation effects Cc. Radiation doses 1) Lethal (acute and chronic) 2) Probable early effects of acute radiation dose over the whole body 3) Local effects, beta-ray burns 4) Symptoms of radiation sickness Recognition of radiation effects a. Methods of detecting of nuclear radiation by film, crystal, ionization, and heat b. Survey meters c. Pocket dosimeters dad. Photographic film badges Protection of personnel from radiation effects a. Shielding characteristics of materials b. Control of radiation dose c. Clothing and equipment d. Decontamination facilities e. Safety indoctrination. Exercises and problems were of 2 or 4 hours' duration with 12 peopl in each instructional group. 1. Dosimetry: The eight sessions were as follows: Familiarization with film badges and pocket dosimeters as radiation-dose-measuring devices and practice in charging, reading, and determining the correction factor on dosimeters 90