Argonne National Laboratory
RERTR
Reduced Enrichment for Research and Test Reactors
Nuclear Engineering Division at Argonne
U.S. Department of Energy

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.

2016 RERTR Meeting

The 2016 International RERTR Meeting (RERTR-2016) will take place in Belgium. Stay tuned for further details.

2015 RERTR Meeting

The 2015 International RERTR Meeting (RERTR-2015) took place in Seoul, Korea on Oct. 11-14, 2015.
For more information visit RERTR-2015.


ARGONNE NATIONAL LABORATORY, Nuclear Engineering Division, RERTR Department
9700 South Cass Ave., Argonne, IL 60439-4814
A U.S. Department of Energy laboratory managed by UChicago Argonne, LLC
 

Last modified on July 29, 2008 11:33 +0200