The point of the above post being more that even in a relatively complex composition as monazite with significant high Z element emissions going every which way, we still see only a small contribution from beta fluorescence.
As for a system more along the lines (pun intended!), which Brian mentioned here is an example of a high alloy steel, first with fluorescence *with* beta lines:
Correction Method and Mass Absorption Coefficient File:
ZAF or Phi-Rho-Z Calculations
LINEMU Henke (LBL, 1985) < 10KeV / CITZMU > 10KeV
Current ZAF or Phi-Rho-Z Selection:
Armstrong/Love Scott (default)
Correction Selections:
Phi(pz) Absorption of Armstrong/Packwood-Brown 1981 MAS
Stopping Power of Love-Scott
Backscatter Coefficient of Love-Scott
Backscatter of Love-Scott
Mean Ionization of Berger-Seltzer
Phi(pz) Equation of Love-Scott
Reed/JTA w/ M-Line Correction and JTA Intensity Mod.
Fluorescence by Beta Lines Included
St 651 Set 2 NIST SRM C2402 (Hastelloy C)
TakeOff = 40.0 KiloVolt = 15.0 Beam Current = 30.0 Beam Size = 0
(Magnification (analytical) = 20000), Beam Mode = Analog Spot
(Magnification (default) = 1000, Magnification (imaging) = 100)
Image Shift (X,Y): .00, .00
High temperature alloy
Number of Data Lines: 5 Number of 'Good' Data Lines: 5
First/Last Date-Time: 03/14/2015 08:09:05 PM to 03/14/2015 08:20:58 PM
WARNING- Using Exponential Off-Peak correction for cr ka
Average Total Oxygen: .000 Average Total Weight%: 98.011
Average Calculated Oxygen: .000 Average Atomic Number: 31.181
Average Excess Oxygen: .000 Average Atomic Weight: 62.245
Average ZAF Iteration: 3.00 Average Quant Iterate: 2.00
St 651 Set 2 NIST SRM C2402 (Hastelloy C), Results in Elemental Weight Percents
SPEC: Co Si Mn V Cu
TYPE: SPEC SPEC SPEC SPEC SPEC
AVER: 1.500 .850 .640 .220 .190
SDEV: .000 .000 .000 .000 .000
ELEM: Fe Ni Cr Mo W
BGDS: LIN LIN EXP LIN LIN
TIME: 100.00 100.00 100.00 100.00 100.00
BEAM: 29.84 29.84 29.84 29.84 29.84
ELEM: Fe Ni Cr Mo W SUM
207 7.607 52.452 16.336 14.459 3.857 98.111
208 7.377 51.317 16.431 15.585 3.698 97.808
209 7.501 52.075 16.397 14.743 3.799 97.915
210 6.505 46.098 16.133 21.935 4.225 98.296
211 7.317 51.365 16.461 15.703 3.679 97.925
AVER: 7.261 50.662 16.352 16.485 3.852 98.011
SDEV: .437 2.596 .131 3.093 .221 .193
SERR: .196 1.161 .058 1.383 .099
%RSD: 6.02 5.12 .80 18.76 5.75
PUBL: 7.300 51.500 16.150 17.100 4.290 99.740
%VAR: -.53 -1.63 1.25 -3.60 -10.22
DIFF: -.039 -.838 .202 -.615 -.438
STDS: 526 528 524 542 574
STKF: 1.0000 1.0000 .9988 .9910 .9979
STCT: 6346.7 20768.3 15241.3 8726.4 2235.2
UNKF: .0797 .5171 .1722 .1346 .0269
UNCT: 505.7 10739.8 2627.0 1185.5 60.4
UNBG: 19.5 118.8 71.3 14.9 4.7
ZCOR: .9115 .9795 .9498 1.2257 1.4303
KRAW: .0797 .5171 .1724 .1359 .0270
PKBG: 26.98 91.45 37.85 80.39 13.83
And next *without* fluorescence by beta lines:
Correction Method and Mass Absorption Coefficient File:
ZAF or Phi-Rho-Z Calculations
LINEMU Henke (LBL, 1985) < 10KeV / CITZMU > 10KeV
Current ZAF or Phi-Rho-Z Selection:
Armstrong/Love Scott (default)
Correction Selections:
Phi(pz) Absorption of Armstrong/Packwood-Brown 1981 MAS
Stopping Power of Love-Scott
Backscatter Coefficient of Love-Scott
Backscatter of Love-Scott
Mean Ionization of Berger-Seltzer
Phi(pz) Equation of Love-Scott
Reed/JTA w/ M-Line Correction and JTA Intensity Mod.
Fluorescence by Beta Lines NOT Included
St 651 Set 2 NIST SRM C2402 (Hastelloy C)
TakeOff = 40.0 KiloVolt = 15.0 Beam Current = 30.0 Beam Size = 0
(Magnification (analytical) = 20000), Beam Mode = Analog Spot
(Magnification (default) = 1000, Magnification (imaging) = 100)
Image Shift (X,Y): .00, .00
High temperature alloy
Number of Data Lines: 5 Number of 'Good' Data Lines: 5
First/Last Date-Time: 03/14/2015 08:09:05 PM to 03/14/2015 08:20:58 PM
WARNING- Using Exponential Off-Peak correction for cr ka
Average Total Oxygen: .000 Average Total Weight%: 98.158
Average Calculated Oxygen: .000 Average Atomic Number: 31.171
Average Excess Oxygen: .000 Average Atomic Weight: 62.230
Average ZAF Iteration: 3.00 Average Quant Iterate: 2.00
St 651 Set 2 NIST SRM C2402 (Hastelloy C), Results in Elemental Weight Percents
SPEC: Co Si Mn V Cu
TYPE: SPEC SPEC SPEC SPEC SPEC
AVER: 1.500 .850 .640 .220 .190
SDEV: .000 .000 .000 .000 .000
ELEM: Fe Ni Cr Mo W
BGDS: LIN LIN EXP LIN LIN
TIME: 100.00 100.00 100.00 100.00 100.00
BEAM: 29.84 29.84 29.84 29.84 29.84
ELEM: Fe Ni Cr Mo W SUM
207 7.673 52.461 16.419 14.459 3.856 98.267
208 7.439 51.326 16.511 15.586 3.697 97.959
209 7.566 52.084 16.479 14.743 3.798 98.070
210 6.553 46.106 16.200 21.936 4.225 98.419
211 7.379 51.374 16.541 15.703 3.678 98.075
AVER: 7.322 50.670 16.430 16.485 3.851 98.158
SDEV: .445 2.596 .136 3.093 .221 .183
SERR: .199 1.161 .061 1.383 .099
%RSD: 6.07 5.12 .83 18.76 5.75
PUBL: 7.300 51.500 16.150 17.100 4.290 99.740
%VAR: .30 -1.61 1.73 -3.59 -10.24
DIFF: .022 -.830 .280 -.615 -.439
STDS: 526 528 524 542 574
STKF: 1.0000 1.0000 .9988 .9910 .9976
STCT: 6346.7 20768.3 15241.3 8726.4 2235.2
UNKF: .0797 .5171 .1722 .1346 .0269
UNCT: 505.7 10739.8 2627.0 1185.5 60.4
UNBG: 19.5 118.8 71.3 14.9 4.7
ZCOR: .9191 .9797 .9544 1.2257 1.4304
KRAW: .0797 .5171 .1724 .1359 .0270
PKBG: 26.98 91.45 37.85 80.39 13.83
The largest effects as expected for Fe ka and Cr Ka, both highly fluoresced by beta lines.