when 3s3p(1p)of Mg is resonantly excited by a dye laser,the bright and directional emission at 5184Åcan be observed.We have measured its intensity and temporal behavior in different Mg density.This emission is be...when 3s3p(1p)of Mg is resonantly excited by a dye laser,the bright and directional emission at 5184Åcan be observed.We have measured its intensity and temporal behavior in different Mg density.This emission is believed to be the superfluorescence,whose upper level is populated by inelastic collisions between excited Mg atoms.展开更多
The energy-pooling collision cross section for the transfer from 3s3p^(1)P to 3s4s^(3)S of Mg has been determined by measuring the relative intensity of the fluorescence at 5184Åand 2852Å.The average cross s...The energy-pooling collision cross section for the transfer from 3s3p^(1)P to 3s4s^(3)S of Mg has been determined by measuring the relative intensity of the fluorescence at 5184Åand 2852Å.The average cross section is(3.1±40%)×10^(-15)cm^(2).By considering the influence of radiation trapping and other uncertain effects,the absolute uncertainty of our measurement is within one order of magnitude.展开更多
文摘when 3s3p(1p)of Mg is resonantly excited by a dye laser,the bright and directional emission at 5184Åcan be observed.We have measured its intensity and temporal behavior in different Mg density.This emission is believed to be the superfluorescence,whose upper level is populated by inelastic collisions between excited Mg atoms.
文摘The energy-pooling collision cross section for the transfer from 3s3p^(1)P to 3s4s^(3)S of Mg has been determined by measuring the relative intensity of the fluorescence at 5184Åand 2852Å.The average cross section is(3.1±40%)×10^(-15)cm^(2).By considering the influence of radiation trapping and other uncertain effects,the absolute uncertainty of our measurement is within one order of magnitude.
