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<p>CSV import</p> <p><b>New page</b></p><div>&#039;&#039;&#039;Photodisintegration&#039;&#039;&#039; is a nuclear process in which an atomic nucleus absorbs a high-energy gamma ray, causing it to enter an excited state and immediately emit a subatomic particle. This process is a key mechanism in the [[astrophysics|astrophysical]] production of heavy elements, particularly in environments with high-energy radiation, such as [[supernova]]e and active galactic nuclei.<br /> <br /> == Overview ==<br /> <br /> Photodisintegration is a type of [[nuclear reaction]] that occurs when a nucleus absorbs a gamma ray and emits a particle. This process is the reverse of [[photoelectric effect|photoelectric]] and [[Compton scattering]], where a gamma ray is absorbed and an electron is emitted. <br /> <br /> In photodisintegration, the absorbed gamma ray has enough energy to overcome the [[nuclear binding energy]], causing the nucleus to emit a particle. The emitted particle can be a proton, neutron, alpha particle, or another nucleus, depending on the specific reaction.<br /> <br /> == Role in Astrophysics ==<br /> <br /> Photodisintegration plays a crucial role in the production of heavy elements in the universe. In high-energy environments such as supernovae and active galactic nuclei, the intense radiation can cause nuclei to undergo photodisintegration. This process can lead to the production of heavy elements through a series of reactions known as the [[r-process]].<br /> <br /> The r-process, or rapid neutron-capture process, involves the rapid absorption of neutrons by a nucleus, followed by beta decay. Photodisintegration can provide the necessary neutrons for this process, contributing to the synthesis of heavy elements.<br /> <br /> == See Also ==<br /> <br /> * [[Nuclear physics]]<br /> * [[Nuclear reaction]]<br /> * [[Gamma ray]]<br /> * [[Supernova]]<br /> * [[r-process]]<br /> <br /> == References ==<br /> <br /> &lt;references /&gt;<br /> <br /> [[Category:Physics]]<br /> [[Category:Nuclear physics]]<br /> [[Category:Astrophysics]]<br /> {{physics-stub}}<br /> {{medicine-stub}}</div>

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