RERTR Publications:
Analysis Methods for Thermal Research and Test Reactors
ANL/RERTR/TM-29
COMPUTING CONTROL ROD WORTHS
IN THERMAL RESEARCH REACTORS
TABLE 2
BROAD GROUP BLACKNESS COEFFICIENTS AND
EFFECTIVE DIFFUSION PARAMETERS
FOR A Ag-In-Cd SLAB OF THICKNESS t = 0.310 cm
Quantity | Group 1 | Group 2 | Group 3 | Group 4 | Group 5 |
Eu(eV) | 1.0E+07 | 8.208E+5 | 5.531E+03 | 1.855 | 0.6249 |
Sa/Ss | 0.01388 | 0.06620 | 0.9549 | 9.2358 | 14.916 |
D(cm) | 1.8067E+00 | 9.6634E-01 | 3.0846E-01 | 1.2755E-01 | 1.0813E-01 |
Sa(cm-1) | 3.8027E-03 | 2.6855E-02 | 5.9217E-01 | 3.9909E+00 | 6.5510E+00 |
L(cm) | 21.80 | 5.999 | 0.7217 | 0.1788 | 0.1285 |
t/L | 0.0142 | 0.0517 | 0.4295 | 1.7338 | 2.4125 |
Sat | 1.1788E-03 | 8.3250E-03 | 1.8357E-01 | 1.2372E+00 | 2.0308E+00 |
No. of Fine Groups | 1 | 1 | 32 | 14 | 21 |
a(P1) | 5.8971E-04 | 4.1294E-03 | 8.0743E-02 | 3.5099E-01 | 4.3407E-01 |
a(P3) | 5.8948E-04 | 4.1191E-03 | 7.8255E-02 | 3.2980E-01 | 4.0888E-01 |
a(P5) | 5.8946E-04 | 4.1184E-03 | 7.8052E-02 | 3.2762E-01 | 4.0657E-01 |
<a(P5)> | 5.8946E-04 | 4.1184E-03 | 5.3232E-02 | 3.0963E-01 | 3.8747E-01 |
<aom(P1)> | 5.5110E-04 | 3.8370E-03 | 5.2921E-02 | 3.0990E-01 | 3.9047E-01 |
b(P1) | 7.7410E+00 | 4.9746E+00 | 1.8153E+00 | 6.6227E-01 | 5.4799E-01 |
b(P3) | 7.7410E+00 | 4.9738E+00 | 1.8052E+00 | 6.3920E-01 | 5.2324E-01 |
b(P5) | 7.7410E+00 | 4.9736E+00 | 1.8037E+00 | 6.3730E-01 | 5.2151E-01 |
<b(P5)> | 7.7410E+00 | 4.9736E+00 | 2.4627E+00 | 7.1679E-01 | 5.4003E-01 |
<bom(P1)> | 5.3069E+02 | 7.5151E+01 | 8.2595E+00 | 7.8897E-01 | 5.6342E-01 |
EDP's* | |||||
h = t: | |||||
Deff | 1.1998+00 | 7.7091E-01 | 3.8713E-01 | 1.1110E-01 | 8.3704E-02 |
Sa-eff | 3.8032E-03 | 2.6592E-02 | 3.5102E-01 | 3.5168E+00 | 8.8489E+00 |
h = t/2: | |||||
Deff | 1.1998E+00 | 7.7075E-01 | 3.7964E-01 | 9.7419E-02 | 6.4097E-02 |
Sa-eff | 3.8031E-03 | 2.6581E-02 | 3.4721E-01 | 2.6505E+00 | 4.7032E+00 |
*Effective Diffusion Parameters (EDP's) based on <a(P5)> and <b(P5)> values.