Frequently Asked Questions
What are the different types of ionizing radiation?
Ionizing radiation has enough energy to remove electrons from atoms, which is why monitoring and protection are important. There are four main types you may encounter in medical, industrial, research, or nuclear environments.
Alpha (α) Radiation
- Consists of heavy, positively charged particles
- Low penetration: stopped by paper, clothing, or skin
- High biological impact if inhaled or ingested
- Commonly associated with radon and some radioactive materials
>Primary risk is internal exposure, not external.
Beta (β) Radiation
- Made up of high-energy electrons
- Moderate penetration: can pass through skin but usually stopped by plastic or glass
- Can cause skin and eye exposure
- Found in nuclear medicine, isotope labs, and industrial sources
>Both external and internal exposure are concerns.
Gamma (γ) Radiation
- High-energy electromagnetic waves (similar to X-rays but more energetic)
- Highly penetrating: requires dense shielding like lead or concrete
- Major source of whole-body exposure
- Common in medical imaging, radiation therapy, and industrial radiography
>Most common type monitored with whole-body dosimetry badges.
Neutron Radiation
- Consists of uncharged particles
- Extremely penetrating and biologically significant
- Requires specialized shielding (water, concrete, polyethylene)
- Found near nuclear reactors, accelerators, and some research facilities
>Requires specialized neutron monitor badges.
Why this matters
Different radiation types interact with the body in different ways, which is why dosimetry badges are matched to your specific work environment. Using the right badge ensures accurate monitoring and regulatory compliance.
Not sure which type of radiation you work with—or which badge detects it? We’re happy to help clarify.
