Pozitron [lot. posi (tivus) \u2014 mus- BAT va elektron], e* \u2014 musbat elektr zaryadli elementar zarra, elektronning antizarrasi. Uning zaryadi e=1,602189- 10-” kl.; massasi \/ya=0,91093 – yu”30 kg; magnit momenti SS=9,2848-10-24 J\/TL. P. spini 1\/2 ga teng bo’lib, Fermi \u2014 Di- rak statis-tikasiga bo’ysunadi. Anti- zarralarning mavjudligini birinchi bo’lib P. Dirak bashorat qilgan (1931). Bu nazariyaga asosan zarra va antizarra- ning massasi, yashash vaqti va spinlari bir xil bo’lib, elektr zaryadi va magnit mo-mentlari modul jihatdan teng, ammo ishoralari qaramaqarshi bo’lishi ke- rak edi. Keyinchalik ular tajribalarda to’la tasdikdandi. Birinchi antizarra \u2014 P.ning mavjudligini K. D. Anderson kuchli magnit maydoniga joylashtiril- gan Vilson kamerasi yordamida kashf etgan (1932). P. elektromagnit, gravitasion va kuchsiz o’zaro ta’sirlarda ishtirok eta- Di va leptonlar sinfiga kiradi. Sta- tistik xususiyatiga kura, P. fermion hisoblanadi. P. turg’undir, lekin u elektron b-n to’qnashganda e+ eg juftlar annigilyasiya hodisasi sodir bo’lganligi uchun jismda qisqa vakt yashaydi. Mas, qo’rg’oshinda P.ning yashash vaqti 5-10-” s ga teng. P.lar bir zarraning ikkinchi zarraga aylanish jarayoni (mas, myuonning Emi- rilishida, u – kvantlarning P. elektron juftini hosil qilish jarayonida va ba’zi radioaktiv izotoplarning beta emirilishi)da hosil bo’ladi. Beta Emi- rilishdan hosil bo’lgan P.dan tekshirish maqsadlarida foydalaniladi. P.ning jismda sekinlashish va annigilyasiya ja- rayonlari jiemning fizik va kimyo-viy xossalari (mas, kristall panja-raning defekti, elektron o’tkazuvchanlikning tezliklar bo’yicha taqsimoti, ba’zi bir kimyoviy reaktsiyalar kinetikasi) to’g’risida ma’lumot beradi.<\/p>\n","protected":false},"excerpt":{"rendered":"
Pozitron [lot. posi (tivus) \u2014 mus- BAT va elektron], e* \u2014 musbat elektr zaryadli elementar zarra, elektronning antizarrasi. Uning zaryadi e=1,602189- 10-” kl.; massasi \/ya=0,91093 – yu”30 kg; magnit momenti … Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":99837,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[226],"tags":[],"class_list":["post-119032","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-p-harfi","entry"],"translation":{"provider":"WPGlobus","version":"3.0.2","language":"kr","enabled_languages":["uz","kr","ru"],"languages":{"uz":{"title":true,"content":true,"excerpt":false},"kr":{"title":false,"content":false,"excerpt":false},"ru":{"title":false,"content":false,"excerpt":false}}},"_links":{"self":[{"href":"https:\/\/milliycha.uz\/kr\/wp-json\/wp\/v2\/posts\/119032","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/milliycha.uz\/kr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/milliycha.uz\/kr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/milliycha.uz\/kr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/milliycha.uz\/kr\/wp-json\/wp\/v2\/comments?post=119032"}],"version-history":[{"count":1,"href":"https:\/\/milliycha.uz\/kr\/wp-json\/wp\/v2\/posts\/119032\/revisions"}],"predecessor-version":[{"id":119039,"href":"https:\/\/milliycha.uz\/kr\/wp-json\/wp\/v2\/posts\/119032\/revisions\/119039"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/milliycha.uz\/kr\/wp-json\/wp\/v2\/media\/99837"}],"wp:attachment":[{"href":"https:\/\/milliycha.uz\/kr\/wp-json\/wp\/v2\/media?parent=119032"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/milliycha.uz\/kr\/wp-json\/wp\/v2\/categories?post=119032"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/milliycha.uz\/kr\/wp-json\/wp\/v2\/tags?post=119032"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}