基于Micromegas探測器的中子CT的研究.pdf

1、蘭州大學(xué)碩士學(xué)位論文基于Micromegas探測器的中子CT的研究姓名：周健榮申請學(xué)位級別：碩士專業(yè)：粒子物理與原子核物理指導(dǎo)教師：胡碧濤20090501蘭州大學(xué)碩士畢業(yè)論文AbstractNondestructiveexamination(NDE)techniqueisofgreatimportancefortheexaminationofplantroot’Sgrowinginsoil，whichmakesitpossiblefor

2、botaniststomonitorthegrowthofaplantalivewithoutremovingsoil，anddiscriminatethehealth，growthandvitalityoftheplantInthispaperthepossibilityusingmicromegas(MicroMeshGaseousStructure)asneutrondetectorin14MeVneutroncomputedto

3、mography(CT)，basedontheacceleratorneutronsource(T(d，n)4He，3x1012rgsec)ofLanzhouUniversitywasstudied，mainlyincluding14MeVneutrondetectionwithmicromegastechniqueandneutronCTThispapercontainsfivepartsbelow：Inthefirstchapter

4、，thedetailedintroductiontOneutronradiographywaspresentedincludingitsprinciple，historyandapplicationInthesecondchapter，thedesignprocessandpresentexperimentofmicromegasas14MeVneutrondetectorwithhighspatialresolutionwereill

5、ustratedindetailInthethirdchapterthebasicprincipleofneutronCTwasillustratedinmathematicas，andhowthealgorithmwascarriedoutbycomputerwasshownindiagramInthefourthchaptermontecarlomethodwasintroducedbrieflyThethreedimensiona

6、limageofplantrootsinsoilwassuccessfullyandclearlyobtainedbythe14MeVneutronCTwithsimulationInthelastchaptertheconclusionofthispaperwaspresented，andthefutureworkwasdiscussedaswellKeywords：FastNeutronRadiographyNeutronCTMic