Profile of 2537.ANGS. emission line from a low-pressure mercury lamp and its absorption by a gas containing mercury vapor.

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  • 低圧水銀灯２５３７Å発光線と水銀蒸気によるその吸収　　プロファイルと吸収効率
  • テイアツ スイギントウ 2537Aハツコウセン ト スイギン ジョウキ ニ ヨル
  • プロファイルと吸収効率

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For Hg I λ2537 Å (63P→61S) line emitted from a low-pressure mercury lamp, we have determined the relative population in the upper level as a function of discharge current and mercury density. From the radial profile of the emission-line intensity, the spatial distribution function of the upper-revel population has been determined to be the zero-th order decay mode for the trapped radiation. Line absorption has been measured by a mercury vapor in a cell with various mercury densities and Lorentzian widths. The results are consistent with the upper-levl-population distribution as determined above. On the basis of these findings we calculate the emission-line profile and its change in the absorption cell. The amount of absorption at an arbitrary depth of the absorption cell is calculated, and the optium cold-spot temperature of the lamp of 40-50°C is suggested for the maximum absorption under the typical condition of the photo-CVD experiment.

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