Save Custom Analysis Format #3 (J.H.)

EPMA Xtreme Probe

 

Probe Menu Details > Output

Save Custom Analysis Format #3 (J.H.)

This menu will automatically create a custom file format (J.H. format). This format is a tab delimited ASCII file and contains extensive information including elemental, oxide, atomic weight percents, detection limits, analytical error (percent error), raw k-ratios, raw and corrected x-ray intensities, background and net counts,  count times, deadtimes, beam current, stage positions, relative distance (in microns) and standard counts.

 

This file format was specified by John Hanchar at George Washington University and cannot be modified for other applications. A short explanation of the various column labels used for this custom output format is given here, but note that in reality, the symbol (El) will be replaced by the actual element symbol:

 

LINE        Line number

El AT%      Atomic weight percent

El WT%      Elemental weight percent

El (O2)     Oxide weight percent

TOTAL       Total weight percent

El CDL99    Detection limit in elemental weight percent at 99% confidence

El %ERR     Analytical error in relative percent (one sigma)

El K-RAW    Elemental raw k-ratio (unk counts/standard counts)

El ONCNT    On-peak count intensity (cps/nominal beam)

El OFCNT    Off-peak count intensity (cps/nominal beam)

El NECNT    Net (off-peak corrected) count intensity (cps/nominal beam)

El ONTIM    On-peak counting time

El HITIM    High off-peak counting time

El LOTIM    Low off-peak counting time

El DETIM    Deadtime correction factor (in secs)

BEAMCUR     Beam current (in nA)

X-POS       X stage position

Y-POS       Y stage position

Z-POS       Z stage position

RELDIST     Relative distance (in microns)

El STDCTS   Standard counts (cps/nominal beam)

 

The elemental raw k-ratios and x-ray intensities are corrected for deadtime, beam current and normalized to cps in addition to background, Time Dependent Intensity (TDI), area peak factors and spectral interference corrections.