What does a radiation detector measure?
A radiation detector measures ionizing radiation, which is energy emitted as particles or waves that can ionize atoms. Depending on the model, it can display: Counts (CPM / CPS) → number of radiation events detected Dose rate (µSv/hr or mR/hr) → how much radiation exposure is occurring Accumulated dose → total radiation over time CPM/CPS […]
Can Radiation Alert® instruments detect microwaves?
No. Our instruments detect ionizing radiation. Microwaves are non-ionizing radiation. DO NOT PLACE OUR INSTRUMENTS IN A MICROWAVE AS IT MAY DAMAGE THE INSTRUMENT OR THE MICROWAVE OVEN.
What is the lowest beta energy that Radiation Alert® detect?
The 10 keV mentioned in some of our specifications is specific to gamma/x rays. For beta particles, it is a bit different. For example, the detector used in The Ranger, Ranger EXP, Frisker, Inspector, and Abacus units has an “Areal density” listed as 1.5 to 2.0 mg/cm^2. Looking this up on a beta particle range/energy […]
Emergency Response and Preparedness
Since the event of September 11, we have had an increased amount of calls from individuals wanting to be informed if a radiation event takes place. Radiation is a scary topic for most individuals, but some basic knowledge will help in determining what action to take when exposed to radiation in an emergency response situation. […]
Glossary of Terms
Alpha: Positively charged particles emitted from the nucleus of an atom. Alpha particles are relatively large, and very heavy. Due to this strong (+) charge and large mass, an alpha particle cannot penetrate far into any material. A sheet of paper or an inch of air can usually stop most alpha particles. Background Radiation: Naturally […]
Possible Household Sources of Radiation
Smoke Detectors: Some smoke detectors contain a sealed radioactive isotope as part of the smoke sensing mechanism. There is no danger to the individual if the container in sealed. They are labeled. Camping Lantern Mantles: In recent years this has changed but some lantern mantles are made with radioactive Thorium. Be especially careful not to […]
A Brief Overview of Radiation Detection
None of the instruments listed in this website detect neutron, microwave, RF (radio frequency), laser, infrared, or ultraviolet radiation. All of the instruments are most accurate for Cesium 137 and isotopes of similar energies. Some isotopes detected relatively well are Cobalt 60, Technicium 99M, Phosphorous 32, Strontium 90, and many forms of Radium, Plutonium, Uranium, […]
What is a Typical Geiger Counter?
A Geiger counter senses ionizing radiation by means of a GM (Geiger Mueller) tube. Some tubes have a thin mica window. When a ray or particle of ionizing radiation enters or passes through the tube, it is sensed electronically and displayed on the meter or LCD and by a red count light. When the switch […]