radiation Flashcards
each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element.
isotopes
a full outer shell
stable
doesn’t have a full outer shell
unstable
a radioactive isotope.
radioisotopes
a method of dating geological specimens by determining the relative proportions of particular radioactive isotopes present in a sample.
radiometric dating
another term for carbon dating. (the determination of the age or date of organic matter from the relative proportions of the carbon isotopes carbon-12 and carbon-14 that it contains. The ratio between them changes as radioactive carbon-14 decays and is not replaced by exchange with the atmosphere.)
radiocarbon dating
an apparatus or structure in which fissile material can be made to undergo a controlled, self-sustaining nuclear reaction with the consequent release of energy
nuclear reactor
a rod-shaped fuel element in a nuclear reactor.
fuel rod
division or splitting into two or more parts.
fission
External beam therapy (EBT), also called external radiation therapy, is a method for delivering a beam or several beams of high-energy x-rays to a patient’s tumor.
external radiotheraphy
a type of cancer treatment. It delivers a high dose of radiation directly to the tumor and helps spare nearby tissues. With internal radiation therapy, the oncologist implants or inserts radioactive materials at the site of your cancer.
internal radiotherapy
the treatment of cancer, especially prostate cancer, by the insertion of radioactive implants directly into the tissue.
brachytheraphy
the point on the earth’s surface directly above or below an exploding nuclear bomb.
ground zero
When nuclear weapons are detonated, enormous amounts
of heat and radiation spread out from the centre of the blast
thermal flash
An electromagnetic pulse (EMP) is an intense burst of electromagnetic (EM) energy caused by an abrupt, rapid acceleration of charged particles, usually electron s. An EMP can contain energy components over a large part of the EM spectrum , from very-low-frequency ( VLF ) radio to ultraviolet ( UV ) wavelength s.
electromagnetic pulse