Tus kheej-diffusion tuaj yeem saib xyuas los ntawm kev siv xov tooj cua isotopes ntawm cov hlau tau kawm. Cov lus tsa suab ntawm cov isotopic atoms yuav raug saib xyuas los ntawm kev ntsuas ntawm qib xov tooj cua.
Yuav ntsuas qhov sib txawv li cas?
MRI muaj lub peev xwm tshwj xeeb los ntsuas qhov kev hloov pauv hloov pauv ntawm cov dej molecules (diffusion) siv lub cuab yeej hu ua a pulsed magnetic field gradientSiv cov cuab yeej no, qhov chaw ntawm cov molecules tau tagged nyob rau hauv ib lub voxel thiab translational tsab ntawv tsa suab tuaj yeem kuaj pom los ntawm cov kev hloov hauv lub teeb liab siv.
Kev faib tus kheej txhais li cas?
Tus kheej-diffusion yog hloov pauv ntawm cov molecules vim Brownian motion nyob rau hauv nruab nrab ntawm cov molecules zoo tib yam. Tracer diffusion yog tib yam tshwm sim uas tau hais tseg rau ntau lub tshuab thiab yog qhov xwm txheej thaum hloov pauv ntawm cov molecule hauv ib qho kev sib xyaw raug saib xyuas.
Diffusion profile yog dab tsi?
Tom qab annealing rau lub sijhawm teev ntawm qhov ntsuas kub, qee qhov sib txawv ntawm impurity atoms yuav ua rau muaj qhov sib txawv, piv txwv li smooth nkhaus ntawm qhov concentration c vs. … tob x hauv cov qauv (feem ntau plotted li lg(c) - x nkhaus).
Dab tsi yog qhov diffusion coefficient ntawm hydrogen gas hauv palladium?
Qhov ua ntej-exponential thiab ua kom lub zog rau qhov diffusion coefficient nyob rau hauv dilute txwv, piv txwv li, intrinsic diffusion coefficient, yog, raws li, 2.40 × 10−7 m2 / s thiab 21.1 kJ/mol H.
