简介:HotnucleiwithdifferentN/Zratiowereproducedbyusing~(40)Arbeamon~(112)Snand~(124)Sntarget,respectively.Theenergyspectraandtheemissionprobabilitiesofhydrogenisotopesareanalyzedinthe30MeV/u~940)Ar+~(112,124)Snreactions.PartialemissionprobabilityP_iofacertainspeciesiisdefinedhereby
简介:MassYieldDistributionofTargetResiduesfromInteractionof197Anwith20MeV/u40ArIons¥SunTongyu;LiWenxin;QinZhi;Zha...
简介:
简介:Radiotherapyisacommontreatmentmodalityforheadandneckcancers,nasopharyngealcancers,primarybraintumorsandbrainmetastases.Alargenumberofpatientsintheworldwithprimaryormetastaticbraintumorswillrequirelargevolumeorwholebrainirradiationeveryyear.However,therapeuticirradiationnotonlykillstumorcells,butalsoinjuresnormalbraintissue,whichiscommonlyassociatedwithsignificantfunctionalmorbidityanddecreasedqualityoflifeinpatientstreatedwithbrainradiotherapy[1].
简介:Theabinitiogeneralizedgradientapproximation(GGA)+Ustudyofmultiferroic(La0.5Bi0.5)2FeCrO6inpnmastructureandferri-magneticorder,includingHubbardcorrections(U-4.1eV)fortransitionmetal/rareearthd-electronswith20atomscell,showsoptimumlocalmagneticmomentsof(Cr^3+,Fe^3+)equalto(-2.56,4.14)#Bandanidealspin-downbandgapof1.54eV.Tuned-bandgapLa-substituteddoubleoxideperovskitesBFCOshouldexhibitenhancedvisible-lightabsorptionandcarriermobility,thuscouldbeconvenientlightabsorbersandthenefficientalternativestowide-gapchalcopyriteabsorber-basedsolarcellsfailingtoachievehighestpowerconversionefficiencies,andevencompetewiththeirmetal-organichalideperovskitescounterparts.
简介:探讨用等离子体喷涂方法制备降低较高强度材料与U-Nb合金之间的摩擦性能的减磨层的可行性以及这些减磨层的摩擦特性。选用Sn为软涂层,ZrO2为硬涂层。采用SulzerMETCO9M等离子体喷涂机制备了Sn单层、ZrO2单层、Sn/ZrO2双层、Sn+ZrO2混合层等4种涂层。利用CSEM型销盘型摩擦磨损试验机分析了半径为3mm的U-Nb合金对偶销在涂层上滑动时的干摩擦特性,滑动速度分别为0.42,6.4,26.16cm/s。涂层为典型的等离子体喷涂涂层形貌。表面为Sn的涂层颗粒熔合状况和致密性比ZrO2单层好,其粗糙度低,Sn+ZrO2混合涂层表面形貌与ZrO2单层相近。Sn和ZrO2分别以bcc结构的Sn和四方结构ZrO2结构存在。
简介:EvaporationofIntermediate-massFragmentsfromHot-nucleiProducedby25MeV/u40ArBombarding159TbTarget¥JiangDongxing;...