Fuel temperature coefficient of reactivity sahifasining manbasini koʻrish

{{Short description|Yadro reaktori yoqilg‘isi barqarorligining o‘lchovi}}
'''Yoqilg‘i harorati reaktivlik koeffitsiyenti''' — yadro yoqilg‘isi haroratining har bir darajaga o‘zgarishiga to‘g‘ri keladigan [[reaktivlik (yadro fizikasi)|reaktivlik]] o‘zgarishidir. U [[yadro reaktori|reaktor]] ishining barqarorligini ifodalovchi ko‘rsatkich bo‘lib, uning qiymati odatda manfiy bo‘ladi. Ushbu koeffitsiyent [[Doppler kengayishi]]ning ta’siri tufayli '''Doppler koeffitsiyenti''' deb ham ataladi; Doppler kengayishi ushbu effektning asosiy hissasini tashkil etadi.<ref>{{Cite journal| doi = 10.1080/00295639.2022.2158679| issn = 0029-5639| volume = 197| issue = 8| pages = 1991-2006| last1 = Friant| first1 = David| last2 = Bernard| first2 = David| last3 = Blaise| first3 = Patrick| title = State of the Art on Doppler Broadening: Modern Developments on the Fuel Temperature Coefficient| journal = Nuclear Science and Engineering| access-date = 2026-08-25| date = 2023-08-03| url = https://doi.org/10.1080/00295639.2022.2158679| url-access = subscription}}</ref>

== Ta’sir etuvchi omillar ==

=== Doppler kengayishi ===
Yoqilg‘i tarkibidagi atomlarning [[issiqlik harakati]] yoqilg‘ining bo‘linmaydigan qismlarida (xususan, [[uran-238]]) [[neytronni yutish]] [[neytron kesimi|kesimining]] rezonans cho‘qqilari kengayishiga olib keladi. Rezonanslar o‘z-o‘zini ekranlagani sababli, ularning kengayishi harorat oshishi bilan umumiy [[neytron oqimi]]ning kamayishiga olib keladi.<ref>{{Cite web |title=Self-shielding |url=https://www.nuclear-power.com/nuclear-power/reactor-physics/nuclear-engineering-fundamentals/neutron-nuclear-reactions/self-shielding/ |website=Nuclear Power |access-date=25 August 2026}}</ref>

=== Issiqlik kengayishi ===
Yuqori haroratlarda yoqilg‘ining [[issiqlik kengayishi]] uning zichligining kamayishiga olib keladi, natijada neytronning yoqilg‘i bilan o‘zaro ta’sirlashish ehtimoli kamayadi.


== Manbalar ==
{{Reflist}}

== Tashqi havolalar ==
* [https://www.nrc.gov/reading-rm/basic-ref/glossary/fuel-temperature-coefficient-of-reactivity.html Fuel temperature coefficient of reactivity] – [[United States Nuclear Regulatory Commission|AQSh Yadro tartibga solish komissiyasi]] lug‘ati

[[Category:Yadro texnologiyasi]]
[[Category:Yadro fizikasi]]