{"id":49563,"date":"2025-06-08T13:14:39","date_gmt":"2025-06-08T07:44:39","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=49563"},"modified":"2025-06-10T10:41:15","modified_gmt":"2025-06-10T05:11:15","slug":"proton-emission","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/proton-emission\/","title":{"rendered":"Proton Emission"},"content":{"rendered":"<h2>Proton Emission Latest News<\/h2>\n<p>An international collaboration of researchers recently detected and measured the half-life of the heaviest proton emitter, the 188At (astatine) isotope, which decayed by emitting a proton.\u00a0<\/p>\n<h2>About Proton Emission<\/h2>\n<ul>\n<li>Proton emission (also known as proton radioactivity) is a\u00a0<strong>rare form of radioactive decay\u00a0<\/strong>in which a\u00a0<strong>proton is ejected from a nucleus.<\/strong>\n<ul>\n<li><strong>Radioactive decay<\/strong>\u00a0is the process of an\u00a0<strong>unstable atom transitioning to a more stable form.\u00a0<\/strong><\/li>\n<li>It may do so\u00a0<strong>by releasing subatomic particles and energy or by capturing an orbital electron<\/strong>\u00a0into the nucleus\u00a0<strong>and releasing energy.\u00a0<\/strong><\/li>\n<\/ul>\n<\/li>\n<li><strong>Proton emission<\/strong>\u00a0can\u00a0<strong>occur from high-lying excited states in a nucleus following a beta decay,<\/strong>\u00a0in which case the process is known as\u00a0<strong>beta-delayed proton emission<\/strong>,\u00a0<strong>or\u00a0<\/strong>can occur\u00a0<strong>from the ground state (or a low-lying isomer) of very proton-rich nuclei,<\/strong>\u00a0in which case the process is very\u00a0<strong>similar to alpha decay.\u00a0<\/strong>\n<ul>\n<li><strong>Alpha decay<\/strong>\u00a0is a type of radioactive decay in which an<strong>\u00a0unstable nucleus emits an alpha particle.<\/strong>\u00a0An\u00a0<strong>alpha particle consists of 2 protons and 2 neutrons,<\/strong>\u00a0which is the s<strong>ame as a helium nucleus (\u2074\u2082He).<\/strong><\/li>\n<li><strong>Beta decay<\/strong>\u00a0occurs when a\u00a0<strong>nucleus emits a beta particle<\/strong>, which can be an\u00a0<strong>electron (\u03b2\u207b) or a positron (\u03b2\u207a).<\/strong><\/li>\n<\/ul>\n<\/li>\n<li>For a proton to escape a nucleus, the\u00a0<strong>proton separation energy must be negative\u00a0<\/strong>&#8211; the proton is therefore unbound, and tunnels out of the nucleus in a finite time.\u00a0<\/li>\n<li><strong>Proton emission\u00a0<\/strong>is\u00a0<strong>not seen in naturally-occurring isotopes;<\/strong>\u00a0proton emitters can be\u00a0<strong>produced via nuclear reactions,\u00a0<\/strong>usually utilising some kind of particle accelerator.<\/li>\n<li>The\u00a0<strong>rate\u00a0<\/strong>of proton emission is\u00a0<strong>governed by the nuclear, Coulomb, and centrifugal potentials of the nucleus,<\/strong>\u00a0where centrifugal potential affects a large part of the rate of proton emission.\u00a0<\/li>\n<li>The\u00a0<strong>half-life of a nucleus with respect to proton emission<\/strong>\u00a0is\u00a0<strong>affected by the proton energy<\/strong>\u00a0and\u00a0<strong>its orbital angular momentum.<\/strong>\n<ul>\n<li>Half-life is the time that it takes for half of the original value of some amount of a radioactive element to decay.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>Proton Emission FAQs<\/h2>\n<p><strong>Q1<\/strong>. What is proton emission?<\/p>\n<p><strong>Ans<\/strong>. It is a rare form of radioactive decay in which a proton is ejected from a nucleus.<\/p>\n<p><strong>Q2<\/strong>. In which condition does proton emission typically occur?\u00a0<\/p>\n<p><strong>Ans<\/strong>. In proton-rich nuclei.<\/p>\n<p><strong>Q3<\/strong>. What is required for a proton to be emitted from the nucleus?<\/p>\n<p><strong>Ans<\/strong>. Negative proton separation energy.<\/p>\n<p><strong>Source<\/strong>:\u00a0<a href=\"https:\/\/www.thehindu.com\/sci-tech\/science\/heaviest-proton-emitter-astatine-188-detected\/article69661352.ece\" target=\"_blank\" rel=\"nofollow noopener\">TH<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Proton Emission is a rare form of radioactive decay in which a proton is ejected from a nucleus.<\/p>\n","protected":false},"author":8,"featured_media":49568,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[21,749,22,23],"class_list":{"0":"post-49563","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-upsc-prelims-current-affairs","8":"tag-prelims-pointers","9":"tag-proton-emission","10":"tag-upsc-current-affairs","11":"tag-upsc-prelims-current-affairs","12":"no-featured-image-padding"},"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/49563","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/comments?post=49563"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/49563\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/49568"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=49563"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=49563"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=49563"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}