Video: LET radiation yog dab tsi?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Hluav taws xob tau muab cais ua ib qho kev hloov pauv hluav taws xob siab (siab LET ) los yog qis hloov hluav taws xob tawm ( qis LET ), raws li tus nqi ntawm lub zog nws hloov mus rau ib txoj kab ntev nws taug kev. Alpha hluav taws xob yog siab LET ; beta thiab gamma hluav taws xob yog qis LET.
Raws li txoj cai, hluav taws xob Let yog dab tsi?
Hauv dosimetry, hloov hluav taws xob tawm ( LET ) yog tus nqi zog uas ib qho ionizing particle hloov mus rau cov khoom traversed ib chav nyob deb. Nws piav txog qhov kev txiav txim ntawm hluav taws xob rau hauv qhov teeb meem. Nws zoo ib yam rau qhov quab yuam quab yuam ua rau them nqi ionizing particle taug kev los ntawm qhov teeb meem.
Kuj Paub, dosimetry yog dab tsi hauv kev kho hluav taws xob? Kev kho mob dosimetry yog kev suav ntawm absorbed koob tshuaj thiab optimization ntawm koob tshuaj xa hauv kev kho hluav taws xob . Nws yog feem ntau ua los ntawm tus kws kho mob physicist nrog kev cob qhia tshwj xeeb hauv thaj chaw ntawd.
Ntxiv mus, dab tsi yog tso rau hauv xray?
Lub ntsiab txhais yog li ntawd LET yog ib qho kev ntsuas ntawm kev saib xyuas quab yuam ua rau them nqi ionizing particle taug kev los ntawm qhov teeb meem. Thiab lub zog hloov pauv, txhais tau tias ntau npaum li cas ntawm cov hluav taws xob hluav taws xob tau xa mus rau hauv cov khoom uas nws mus dhau. Lub tswv yim no cuam tshuam nrog X - ray piv rau lwm hom hluav taws xob.
ionizing hluav taws xob cuam tshuam li cas DNA?
Thaum cov cell raug rau ionizing tawg , xov tooj cua kev puas tsuaj tuaj yeem tshwm sim los ntawm kev nqis tes ncaj lossis ua ncaj qha. Kev txiav txim ncaj qha tshwm sim thaum alpha hais, beta hais los yog x-rays tsim ions uas lub cev ua txhaum ib los yog ob qho tib si ntawm cov qab zib phosphate backbones los yog ua txhaum lub hauv paus khub ntawm lub cev. DNA.
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