Most smoke detectors which operate alarms contain an artificially produced radioisotope: americium-241 in the form of americium dioxide. Americium-241 is made in nuclear reactors, and is a decay product of plutonium-241. It emits mostly alpha particles and relatively little harmful gamma radiation. The amount of americium in a typical new smoke detector is 1 microcurie or about 0.29 micrograms. The smoke detector works by using the americium as a source of ionizing radiation to ionize the air in an ionization chamber between two electrodes. The slightly ionized air allows a small current to be conducted between the two electrodes. When smoke enters the chamber, it absorbs some of the ionizing radiation, reducing or eliminating the current and triggering the alarm.
If it is related to Nuclear studies, then the answer would be fusion.
only the gamma decay.
This is a gamma-decay.
radioactive decay
Radioactive decay; beta decay is a type of radioactive decay in which a beta particle (an electron or a positron) is emitted
It is Radioactive Decay.
alpha decay.
alpha decay
Alpha decay
Rutherford
During any type of radioactive decay, one isotope (type of atom) will convert into a different isotope.
If it is related to Nuclear studies, then the answer would be fusion.
Alpha decay
only the gamma decay.
There are basically two types of smoke detector; one type measures the opacity of the air to literally "see" if there is smoke. The other type tests for ionization that occurs when there is a fire. That type smoke detector uses a small radioactive chip to determine if freshly ionized smoke is present. It's a far more accurate means of determining the presence of fire and associated hazardous smoke. Many smoke detectors use a combination of both detectors. A separate type of detector is the carbon monoxide detector, which senses the presence of harmful carbon monoxide in the air. Most will even indicate the percentage of carbon monoxide. Note that carbon monoxide is typically present when a furnace or other heating device malfunctions.
This is a gamma-decay.
This is an alpha decay.