Abstract

A thin Bi layer is irradiated by X-rays so thatL-Auger electrons are emitted. A magnetic lens spectrometer is used to measure the electron spectrum. Energy, transition, and relativ intensity are given for 14 lines. Under the most favourable conditions the number ofLIII ionisations is about ten times that ofLII ionisations. In this case only a small intensity ofLII-Auger electrons is superposed on theLIII-Auger spectrum. The ratiod of intensities of line groupLIIIM N to line groupLIIIM M is found by extrapolation to bed=0·46±0·02. This combined with earlier results gives anLIII-Auger yielda3= 0·64±0·04. TheLIII fluorescenc yield isω3=0·36±0·04, correspondingly. A further application of the experimental method is described.

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