What type of radiation is used in radioactive dating 18 sexmobilechat

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Gamma rays, which are unaffected by the electric field, must be uncharged. Because the loss of an α particle gives a daughter nuclide with a mass number four units smaller and an atomic number two units smaller than those of the parent nuclide, the daughter nuclide has a larger n:p ratio than the parent nuclide.If the parent nuclide undergoing α decay lies below the band of stability (refer to Chapter 21.1 Nuclear Structure and Stability), the daughter nuclide will lie closer to the band.In most cases, the energy emitted will be in the form of an X-ray.Like positron emission, electron capture occurs for “proton-rich” nuclei that lie below the band of stability.The loss of an inner shell electron leaves a vacancy that will be filled by one of the outer electrons.As the outer electron drops into the vacancy, it will emit energy.The scans it produces can be used to image a healthy brain (b) or can be used for diagnosing medical conditions such as Alzheimer’s disease (c).

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This increases the n:p ratio, and the daughter nuclide lies closer to the band of stability than did the parent nuclide.Following the somewhat serendipitous discovery of radioactivity by Becquerel, many prominent scientists began to investigate this new, intriguing phenomenon.Among them were Marie Curie (the first woman to win a Nobel Prize, and the only person to win two Nobel Prizes in different sciences—chemistry and physics), who was the first to coin the term “radioactivity,” and Ernest Rutherford (of gold foil experiment fame), who investigated and named three of the most common types of radiation.Whether electron capture or positron emission occurs is difficult to predict.The choice is primarily due to kinetic factors, with the one requiring the smaller activation energy being the one more likely to occur.

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