What causes high background signal in SPECS PHOIBOS?
A high background signal in your SPECS Measuring Instruments could be due to a few reasons. First, check the detector preamplifier threshold. If that's not the issue, consider that the primary source might be generating excessive noise, and try using a second excitation source. Electrical interference could also be the cause; monitor the mains voltage and inspect ground connections.
What to do if I have low energy resolution on SPECS Measuring Instruments?
If you're experiencing low energy resolution with your SPECS Measuring Instruments, start by verifying the work function setting. Sample charging can also degrade resolution, so check the sample's ground connection and use an external electron flood gun for compensation. Incorrect voltages on the HSA (inner and outer sphere) can be a factor. Also, check the zero point of HSA3500.
Why are there intensity fluctuations in SPECS PHOIBOS Measuring Instruments?
Intensity fluctuations in SPECS Measuring Instruments can arise from several sources. Field emission at the exit slit of the HSA might be occurring; remove any wire edges from the mesh at the exit slit. Sparks at the anode side of the CEM may also cause fluctuations. Check spectra without excitation source and disconnect the preamplifier and measure again.
What causes a noisy spectrum in SPECS PHOIBOS?
A noisy spectrum in SPECS Measuring Instruments may be caused by several factors. Malfunctioning lenses can introduce noise; check tubus voltages and all analyzer (HSA 3500) voltages. Improper adjustment of the Slit Orbit mechanism can also contribute; check proper adjustment. Magnetic fields may also be the cause.
Why are peaks shifted equally in SPECS PHOIBOS?
If the peaks are shifted equally in your SPECS Measuring Instruments, the issue might be an incorrect amplification factor. Check U0 HSA3500.
What causes peaks to shift differently in SPECS PHOIBOS Measuring Instruments?
Peaks shifting differently in SPECS Measuring Instruments could indicate a malfunction of the counter board. Alternatively, one lens electrode might not be connected; run a spectrum at high speed and perform a crosstalk test with all lens tubes. A malfunction of the energy sweep generator could also be the cause; check the energy sweep.
General| Brand | SPECS |
|---|---|
| Model | PHOIBOS Series |
| Category | Measuring Instruments |
| Language | English |
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