Rebbert R E, Ausloos P
Institute for Materials Research, National Bureau of Standards, Washington, D.C. 20234.
J Res Natl Bur Stand A Phys Chem. 1971 Sep-Oct;75A(5):481-485. doi: 10.6028/jres.075A.038.
The ionization quantum yields and I he extinction coefficients of a number of compounds have been determined at the wavelengths of the helium (58.4 nm) and neon (73.6-74.4 nm) resonance lamps. These are lamps with thin aluminum windows (100-200 nm) which we inserted in a glass cell backed by a second cell. Both cells are provided with parallel plate electrodes and separated from each other by an aluminum window. The ionization quantum yields are based on ionization efficiency of argon which is unity. Hydrogen, which has an ionization quantum yield of 0.94 and 1.00 at 73.6-74.4 and 58.4 nm respectively, was used as a secondary standard because it yielded better defined saturation ion current plateaus. The extinction coefficients were determined in both a double cell and a single cell arrangement. The agreement between the two measurements was excellent. In general an inert diluent was added to the gas of interest in order to improve the plateau of the saturation ion current. These results are compared with the literature values, which were mainly determined in windowless systems with monochromators.
已在氦（58.4纳米）和氖（73.6 - 74.4纳米）共振灯的波长下测定了多种化合物的电离量子产率和消光系数。这些灯带有薄铝窗（100 - 200纳米），我们将其插入由第二个电池支撑的玻璃电池中。两个电池都配备有平行板电极，并由铝窗彼此隔开。电离量子产率基于氩的电离效率，其值为1。氢气在73.6 - 74.4纳米和58.4纳米处的电离量子产率分别为0.94和1.00，由于它能产生定义更明确的饱和离子电流平台，所以被用作二级标准。消光系数是在双电池和单电池配置中测定的。两种测量结果之间的一致性非常好。一般来说，为了改善饱和离子电流的平台，会向感兴趣的气体中添加惰性稀释剂。将这些结果与文献值进行了比较，文献值主要是在无窗系统中用单色仪测定的。
