Final answer:
The LD50/30, which indicates the dose of ionizing radiation that would be lethal to 50% of adult humans within 30 days without medical assistance, is between 3-4 Gyt.
Step-by-step explanation:
LD 50/30 for Adult Humans Without Medical Support
The question you are asking relates to the concept of LD50 in the field of toxicology. This value represents the dose of a substance that is expected to cause death in 50% of a test population. Specifically, you are referring to the LD50/30, which is the lethal dose for 50% of adult humans within 30 days after exposure without medical treatment. When it comes to ionizing radiation, the LD50/30 for adult humans without medical support is generally considered to be between 3-4 Gyt. At this range, 50% of human subjects are expected to die without medical intervention due to the radiation effects, primarily the breakdown of the small intestine and blood systems.