Which radiation types does the AN/PDR-77 Radiac Set detect and measure?

The AN/PDR-77 Radiac Set is specifically designed to detect and measure radiation types relevant to CBRN operations. The correct answer encompasses the detection of alpha particles, x-rays, beta particles, and gamma rays. The AN/PDR-77 is equipped with a scintillation detector that is sensitive to these forms of radiation, allowing for effective measurement in various operational environments.

Alpha particles, while limited in penetration, can be detected when proper measuring techniques and equipment are used. X-rays, which are a form of high-energy electromagnetic radiation, are also detectable and relevant in many radiation scenarios. Beta particles (electrons) and gamma rays are vital in contamination and exposure assessments, making their detection by the AN/PDR-77 crucial for operators in the field.

This capability is essential in CBRN reconnaissance, as understanding the types of radiation present can inform decisions regarding safety and protective measures during operations.