Na-23 dosimetry 531 0 0 0 1.10230+ 4 2.27920+ 1 1 0 0 16311 1451 1 0.00000+ 0 0.00000+ 0 0 0 0 06311 1451 2 0.00000+ 0 0.00000+ 0 0 0 49 56311 1451 3 11-na- 23 ornl eval-dec77 d.c.larson 6311 1451 4 dist-aug79 790711 6311 1451 5 *** documentation for dosimetry special applications file*** 6311 1451 6 file 2 ***** 6311 1451 7 resonance parameters are used from 600 ev to 500 kev. the thermal 6311 1451 8 capture cross section is given as 528 mb, in agreement with the 6311 1451 9 experimental results of 526.9+-4.5 mb(ry71), as well as earlier 6311 1451 10 results summarized in ref ry71. using resonance parameters 6311 1451 11 e=2.81 kev, gn=376 ev and gg=0.353 ev for the large 2.81 kev 6311 1451 12 resonance gives the correct thermal capture value using a breit- 6311 1451 13 wigner shape, and this form is used to calculate the capture cross6311 1451 14 section from 1.e-5 ev to 600 ev. the capture width gg=0.353 ev is6311 1451 15 consistent with a recent result by wilson, jackson and thomas 6311 1451 16 (wi77) where they find 0.24