简介：Ｏｐｅｒａｔｉｏｎｏｆ２００ｋＶＨｅａｖｙＩｏｎＡｃｃｅｌｅｒａｔｏｒ￥ＺｈａｏＬｉｍｉｎ；ＷａｎｇＪｉｎｇｙａｎ；ＦｕＢａｏｊｉｎａｎｄＸｉａｏＲｏｎｇｑｉｎｇＩｎ１９９６２００ｋＶｈｅａｖｙｉｏｎａｃｃｅｌｅｒａｔｏｒｗａｓｏｐｅｒａｔｅｄｆｏｒ...

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简介：ThispaperdevelopsamodifiedTaitequationofstate(EOS)fortrans-decahydronaphthalenewithfourparametersA,B,V0andP0beingtreatedaslinearfunctionsoftemperature.Thecoefficientscontainedinthesefunctionsaredeterminedthroughfittingtheexperimentalcompressiondataintheliteraturebetween293Kand446Kandatpressuresfrom10to200MPa.Expressionsforthethermalexpansivity,isothermalcompressibilityandthermodynamicquantitiesarededucedandthenumericalresultsareanalyticallyderived.ThenumericalresultsshowthattheprecisionofthemodifiedTaitEOSdevelopedinthispaperissuperiortotheEOSintheliterature.

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简介：Weperformfirst-principlecalculationsforthestudyoftheorthorhombicRb2Cd2(SO4)3structure.Electronicenergybands,totalandpartialdensitiesofstatesarereportedandanalysed.Itisfoundthatoxygenatomic2pelectronsstronglyhybridizewithRb/orCd4dandS2pstates,resultingintwo-typeionicgroupswithweakcouplings.Itisshownthatmacroscopicdomainwallsoriginatefromsuchweak-couplingionicgroups,arisingatthecellboundaries.Theasymmetriccationbonds(Rb-OandCd-O)andthesubsequentrotationsoftheS04tetrahedracanleadtothedrivingforceoftheferroelectricbehaviour.Thepredictedpyroelectriccurrenteffectsareobservedexperimentallyintheferroelectricphase.

简介：SISAK是国内外目前应用最广泛的短寿命同位素快化分离技术之一,在裂变产物、超重元素、远离β稳定线的非稳核研究方面有着广泛的应用。SISAK技术最新的发展主要集中在配套设备和计算机控制上。我们研制了一套以S7-200PLC为核心的SISAK自动控制系统,其组成和控制方案简单可靠,已在冷实验中取得了很好的效果。

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