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1、ThermodynamicsofElectrolytesTheJournalofPhysicalChemistry,Vol.83,No.12,19791599trappedhydrogenatomsaredetrappedclearlydemon-diffusionvelocityofhydrogenatomsintheplasticcrystalstrateswhathappensifhydrogenatomsaremobilizedinphaseleadstoahigherprobabilityofrecombinatio
2、nre-thematrices.Thereactionsofmobilehydrogenatomsinaction8thanthatofabstractionreactionfromsolutessuchsolidphasesmustbediffusioncontrolledespecially(reaction7).Theyhavealsoreportedthatthesoluteatlowtemperatureasissuggestedfromthesuppressionradicalyieldrelativetothet
3、otalyieldinthecrystalphaseofhydrogenatommigrationbelow77Kandimmobili-levelsoffathighirradiationdoses.Thismaybealsozationat4.2K.Itislikelythatthereactionswouldbeinterpretedbytherelativeimportanceofrecombinationmoreorlessdiffusioncontrolledevenat77K,sothatreaction8ath
4、igherdoses.Theseresultsseemtosuggestsimplecompetitionmaynotbeassumedevenformobilethatthereactionsofhydrogenatomsincrystallineneo-hydrogenatoms.Thestericandorientationalfactorsmaypentanearediffusioncontrolled.bealsoimportantforthediffusion-controlledreactionsofhydrog
5、enatomsinsuchsolidphase^.^ReferencesandNotesItissuggestedthatfactorssuchastheefficiencyofthe(1)M.Iwasaki,K.Toriyama,K.Nunome,H.Fukaya,andH.Muto,J.hydrogenatomimmobilizationandthediffusionofhy-Phys.Chem.,81,1410(1977).drogenatomsinthematrices,aswellasstericandori-(2)
6、M.Iwasaki,H.Muto,K.Toriyama,H.Fukaya,andK.Nunome,J.Phys.Chem.,precedingpaperinthisissue.entationalfactorsandthereactivitiesofhydrogenatoms(3)T.Miyazaki,K.Kinugawa,andJ.Kasugai,Radlat.Phys.Chem.,10,withmatrixandsolutemoleculesarecorrelatedina155(1977).complicatedmann
7、erandplayanimportantroleinthe(4)M.Iwasaki,K.Toriyama,H.Muto,andK.Nunome,Chem.Phys.Lett.,56,494(1978).selectiveformationofsoluteradicalsat77Kandits(5)K.ToriyamaandM.Iwasaki,J.Phys.Chem.,82,2056(1978).suppressionattemperatureslowerthan77K.Unlessall(6)K.Toriyama,K.Nuno
8、me,andM.Iwasaki,J.Am.Chem.Soc.,99,ofthesefactorsareproperlytakenintoconsideration,the5823(1977).soundunderstandingofthesolidstatereactions
