Beta rays

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Related to Beta rays: Alpha rays

Be´ta rays

1.(Physics) a form of ionizing radiation emitted by radioactive substances (such as radium), more penetrating than alpha rays, and consisting of negatively charged electrons. The electrons are the same kind of particle as those of cathode rays, but have much higher velocities (about 35,000 to 180,000 miles per second). They are readily deflected by a magnetic or electric field.
References in periodicals archive ?
These devices monitor and measures ionizing radiations such as X-rays, Beta rays, Gamma rays.
Strontium-90, materials that emit beta rays and causes bone cancer, likewise hit 1.
Tepco said the level of those that emit beta rays was 230 million becquerels per liter.
About 10 tons of water may have leaked, the utility said, noting the pipe contained some 37 million becquerels per liter of radioactive substances that emit beta rays such as strontium-90 in a reading in August, against the legal limit of 30 becquerels for strontium-90.
Tepco said the radiation measured was beta rays, which would be easier to protect against than gamma rays.
Alpha rays carry a positive charge, beta rays carry a negative charge and gamma rays are neutral.
can release radioactive gamma and beta rays that can cause cancer.