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 1

BROAD GROUP BLACKNESS COEFFICIENTS AND EFFECTIVE DIFFUSION PARAMETERS
FOR A CADMIUM SLAB OF THICKNESS t = 0.1016 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 5.7044E-03 3.5980E-02 4.6885E-01 3.3797E+00 2.7866E+02
D(cm) 2.2107E+00 1.2857E+00 6.6445E-01 4.5743E-01 2.6851E-02
Sa(cm-1) 1.3852E-03 1.1291E-02 1.6113E-01 8.1813E-01 6.7436E+01
L(cm) 39.95 10.67 2.031 0.7477 0.01995
t/L 0.0025 0.0095 0.0500 0.1359 5.093
Sat 1.4074E-04 1.1472E-03 1.6371E-02 8.3122E-02 6.8515E+00
No. of Fine Groups 1 1 32 14 21
a(P1) 7.2308E-05 5.7402E-04 8.0056E-03 3.8077E-02 4.9904E-01
a(P3) 7.2304E-05 5.7374E-04 7.9567E-03 3.7162E-02 4.7188E-01
a(P5) 7.2304E-05 5.7371E-04 7.9516E-03 3.7089E-02 4.6980E-01
<a(P5)> 7.2304E-05 5.7371E-04 7.2171E-03 3.6251E-02 4.4449E-01
<ao(P5)> 7.0502E-05 5.7111E-04 7.1182E-03 3.5965E-02 4.4473E-01
<aom(P1)> 6.5998E-05 5.3636E-04 6.8076E-03 3.4988E-02 4.4368E-01
b(P1) 2.6866E+01 2.0183E+01 1.3004E+01 6.2145E+00 4.9955E-01
b(P3) 2.6868E+01 2.0183E+01 1.3002E+01 6.2051E+00 4.7241E-01
b(P5) 2.6868E+01 2.0183E+01 1.3002E+01 6.2034E+00 4.7035E-01
<b(P5)> 2.6868E+01 2.0183E+01 1.3795E+01 8.6248E+00 4.7099E-01
<bo(P5)> 4.7447E+03 5.8022E+02 1.8903E+02 1.5660E+01 4.7134E-01
<bom(P1)> 4.4454E+03 5.4537E+02 1.7754E+02 1.4706E+01 4.6984E-01
EDP's*
h = t:
Deff 1.3649E+00 1.0253E+00 7.0079E-01 4.3814E-01 2.3926E-02
Sa-eff 1.4233E-03 1.1294E-02 1.4214E-01 7.1662E-01 1.5556E+02
h = t/2:
Deff 1.3649E+00 1.0253E+00 7.0070E-01 4.3768E-01 1.4800E-02
Sa-eff 1.4233E-03 1.1294E-02 1.4210E-01 7.1511E-01 3.6893E+01

*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