Neutrino thiab antineutrino yog ob lub subatomic hais. Qhov sib txawv tseem ceeb ntawm antineutrino thiab neutrino yog qhov neutrino yog ib qho particle whereas antineutrino yog antiparticle.
Muaj ntau qhov kev siv neutrino thiab antineutrino hauv ntau qhov chaw. Peb tuaj yeem siv cov khoom xws li huab hwm coj, nqi, thiab kiv ntawm cov khoom no hauv ntau txoj hauv kev los kuaj xyuas thiab txiav txim siab cov khoom ntawm lub tshuab. Peb tuaj yeem txhais cov neutrino ua ib qho subatomic particle uas tsis muaj hluav taws xob (tab sis lwm yam khoom zoo ib yam li electron), qhov loj me me thiab nws muaj ntau heev hauv ntiaj teb. Ntawm qhov tod tes, ib qho antineutrino yog anti-particle ntawm neutrino.
Antineutrino yog dab tsi?
Yuav kom nkag siab tias antineutrino yog dab tsi, ib tus yuav tsum xub nkag siab tias cov tshuaj tiv thaiv yog dab tsi. Feem ntau ntawm cov khoom peb paub muaj antiparticles. Ib qho antiparticle yog ib qho particle uas muaj tib qhov loj, tab sis tus nqi rov qab rau ib qho particle. Txawm li cas los xij, tus nqi tsis yog qhov sib txawv ntawm cov particles thiab antiparticles xwb. Yog hais tias ib tug particle thiab ib tug antiparticle sib cuag, lawv yuav annihilate los tsim lub zog. Rau qhov kev puas tsuaj tshwm sim, ob qho tib si particle thiab antiparticle yuav tsum muaj nyob rau hauv lub xeev quantum uas tsim nyog.
Daim duab 01: Tsim cov Antineutrino los ntawm Beta Decay
Ntxiv mus, ib qho antineutrino yog antiparticle ntawm neutrino. Txij li thaum neutrino tsis muaj nqi, qee cov neeg hais tias neutrino thiab antineutrino yog tib yam. Particle-antiparticle khub uas muaj cov cuab yeej no (ib qho khoom muaj nws tus kheej antiparticle nrog tib lub zog) hu ua Majorana hais. Zoo li cov neutrino, antineutron kuj muaj qhov sib npaug ntawm ½. Tsis tas li ntawd, antineutrinos cuam tshuam los ntawm lub zog tsis muaj zog thiab lub zog gravitational nkaus xwb. Yog li ntawd, kev tshawb pom ntawm antineutrons yog ib qho nyuaj. Cov particle no yog lepton. Qhov no txhais tau tias antineutrino yog ib qho tseem ceeb ntawm ib nrab ntawm cov lej sib npaug (kiv 1 ⁄ 2) uas tsis muaj kev sib cuam tshuam zoo.
Neutrino yog dab tsi?
Lub neutrino txhais tau tias "qhov nruab nrab me me". Peb tuaj yeem txhais nws los ntawm Greek tsab ntawv ν (nu). Lub neutrino yog ib qho me me subatomic particle, uas muaj kev cuam tshuam tsis zoo nrog cov teeb meem; uas txhais tau tias, nws tuaj yeem dhau los ntawm qhov teeb meem yam tsis muaj kev cuam tshuam ntau yam xws li kev sib tsoo thiab kev sib txawv. Neutrino yog hluav taws xob nruab nrab.
Qhov loj ntawm cov khoom no me me tab sis tsis xoom. Qhov me me ntawm qhov loj thiab qhov hluav taws xob nruab nrab yog vim li cas neutrino muaj tsawg heev los yog yuav luag tsis muaj kev cuam tshuam nrog teeb meem. Lawv raug tsim los ntawm qee hom kev puas tsuaj los yog nuclear kev cuam tshuam. Lub nuclear fusion nyob rau hauv lub hnub, nuclear fission nyob rau hauv atomic reactors thiab cosmic ray kev sib tsoo nrog atoms yog ib co ntawm cov laj thawj rau kev tsim cov particles.
Daim duab 02: Lub cim ntawm Muon Neutrino
Muaj peb hom neutrons uas yog electron neutrons, tau neutrons, thiab muon neutrons. Cov no yog hu ua flavours ntawm neutrinos hauv particle physics. Thawj cov pov thawj ntawm cov neutrino yog tias kev txuag ntawm huab hwm coj, lub zog thiab lub zog tsis muaj nyob rau hauv kev sib npaug ntawm kev puas tsuaj.
Xyoo 1930, Wolfgang Pauli tau hais tias yuav tsum muaj cov khoom me me uas muaj qhov loj me thiab tsis muaj nqi txhawm rau txhawm rau sib npaug ntawm txoj cai kev txuag. Tom qab ntawd, qhov kev tshawb pom ntawm thawj neutrons tshwm sim hauv xyoo 1956, thiab lub hauv paus tseem ceeb ntawm neutrinos hauv ntiaj teb yog lub hnub. Kwv yees li 65 billion hnub ci neutrinos hla txhua square centimeter. Ntxiv mus, txoj kev xav ntawm neutrino oscillations qhia tias cov neutrinos hloov flavour lossis "oscillates" ntawm flavours. Neutrino muaj qhov sib tw ntawm ½. Ib qho particle uas muaj ib nrab-tus lej tig poob rau hauv tsev neeg lepton.
Qhov txawv ntawm Antineutrino thiab Neutrino yog dab tsi?
Ob qho tib si neutrino thiab antineutrino yog ob lub subatomic hais. Txawm li cas los xij, qhov sib txawv tseem ceeb ntawm antineutrino thiab neutrino yog qhov neutrino yog ib qho particle whereas antineutrino yog antiparticle. Ntxiv mus, kev sib tsoo neutrino-antineutrino yuav rhuav tshem ob qho tib si thiab tsim ob lub photons.
Summary – Antineutrino vs Neutrino
Ob qho tib si neutrino thiab antineutrino yog ob lub subatomic hais. Qhov sib txawv tseem ceeb ntawm antineutrino thiab neutrino yog qhov neutrino yog ib qho particle whereas antineutrino yog ib qho antiparticle.
