Author Topic: Noise signal at the first point in TDI  (Read 173 times)

Changkun

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Noise signal at the first point in TDI
« on: May 11, 2018, 11:22:56 am »
Is there anyone who has seen a noise signal at the first point in TDI?

Attached shows that high signal (20 cps/nA) only at the first point and normal signals (~0.3 cps/nA) at following points in TDI for Ti in melilite.
Since Ti is trace in melilite (generally less than 500 ppm as TiO2 in this sample), the first signals are definitely noise, probably due to hardware problem.

The noise signals appeared temporarily for ~3 hours in the spectrometer 5 (LiFH) and are not seen anymore yet.
« Last Edit: May 11, 2018, 01:22:17 pm by John Donovan »