根据EN 62493,说明了灯具人体暴露的评估计算方法,对电流密度测试布置、设备及测试步骤进行详细说明。对常用的不同类型(节能灯、LED灯、卤素灯及气体放电灯)、不同功率的灯具在20 k Hz^10 MHz频率内分别进行了感应电流密度测试、计算...根据EN 62493,说明了灯具人体暴露的评估计算方法,对电流密度测试布置、设备及测试步骤进行详细说明。对常用的不同类型(节能灯、LED灯、卤素灯及气体放电灯)、不同功率的灯具在20 k Hz^10 MHz频率内分别进行了感应电流密度测试、计算了评估系数F,获得了同类型、不同功率灯具,同功率不同类型灯具的电磁场辐射发射变化评估,以供灯具的生产商对比参考。展开更多
We present a systematic light-cone QCD sum rule study of the exclusive rare radiative decay Ab → Aγ and rare semileptonic decay Ab→ Al＋ l- within the framework of the standard model. Although some light-cone sum r...We present a systematic light-cone QCD sum rule study of the exclusive rare radiative decay Ab → Aγ and rare semileptonic decay Ab→ Al＋ l- within the framework of the standard model. Although some light-cone sum rule （LCSR） studies on these rare processes can be found in different literatures, it is necessary to reanalyze them systematically for the reason that either the baryonic distribution amplitudes are improved or different interpolating currents for the Ab baryon may lead to quite different results. In addition, the rare process Ab →Aγ has not yet been analyzed by LCSR with the Ioffe-type current. Taking all these reasons into account, we perform LCSR calculations of both the processes with two types of interpolating currents. Our calculations show that the choice of the interpolating current for the Ab baryon can affect the predictions significantly, especially for the rare radiative decay process.展开更多
文摘根据EN 62493,说明了灯具人体暴露的评估计算方法,对电流密度测试布置、设备及测试步骤进行详细说明。对常用的不同类型(节能灯、LED灯、卤素灯及气体放电灯)、不同功率的灯具在20 k Hz^10 MHz频率内分别进行了感应电流密度测试、计算了评估系数F,获得了同类型、不同功率灯具,同功率不同类型灯具的电磁场辐射发射变化评估,以供灯具的生产商对比参考。
基金Supported by the National Natural Science Foundation of China under Grant Nos. 11205242, 10975184, 11105222, and 11105223
文摘We present a systematic light-cone QCD sum rule study of the exclusive rare radiative decay Ab → Aγ and rare semileptonic decay Ab→ Al＋ l- within the framework of the standard model. Although some light-cone sum rule （LCSR） studies on these rare processes can be found in different literatures, it is necessary to reanalyze them systematically for the reason that either the baryonic distribution amplitudes are improved or different interpolating currents for the Ab baryon may lead to quite different results. In addition, the rare process Ab →Aγ has not yet been analyzed by LCSR with the Ioffe-type current. Taking all these reasons into account, we perform LCSR calculations of both the processes with two types of interpolating currents. Our calculations show that the choice of the interpolating current for the Ab baryon can affect the predictions significantly, especially for the rare radiative decay process.
