alpha particle

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  • noun

Words related to alpha particle

a positively charged particle that is the nucleus of the helium atom

References in periodicals archive ?
Indeed, it is known that to remove of only a nucleon from alpha particles the energy about 20 MeV is required [9].
3 days, which itself emits an alpha particle and converts to PO-218, a radioactive material with 3-minute half-life.
What we do is strip the inner electrons out of the atom, by getting close to the sample and hitting it with either an alpha particle or an X-ray.
Alpha particles traversing the nucleus of HeLa cells produced a track averaging 10 [micro]m, with an average of 22 doublestrand chromosomal breaks (DSBs) (Aten et al.
One day, Rutherford recounted years later, Geiger excitedly reported that some alpha particles had bounced backward upon encountering the foil.
The extra mass increases the amount of damage alpha particles inflict on cancer cells.
A solid neutron converter material of boron is placed on the aluminum drift electrode producing alpha particles that ionize the fill gas mixture of argon and methane.
The small sizes of the bone and marrow cavities and the short ranges of the alpha particles complicate accurate dose estimates to the red bone marrow and bone endosteum.
When U-238 spontaneously undergoes radioactive decay, it emits alpha particles and turns into Thorium-234.
Along with the neutrons, alpha particles are released at exactly 180 degrees opposite to the neutrons.
Some of the radon daughters decay by the emission of high energy alpha particles which can kill as many as two cells in their path; the damage which may be only increased in conjunction with other possible environmental factors such as viruses.
Since alpha particles only travel short distances of between 2 and 5 cell diameters, there is less chance of damaging healthy tissue with this type of therapy.
One gram of DU emits more than 12,000 cell-damaging alpha particles per second.
Radon's radioactivity consists of alpha particles, which are generally unable to pass through the stomach's lining but may lodge in the lungs.
Instead of an external power source, these nuclear devices use a radioactive isotope, Polonium-210, to bombard adjacent air molecules with alpha particles.