ENTRY 23529 20190604 228023529 0 1 SUBENT 23529001 20190603 228023529 1 1 BIB 11 31 23529 1 2 TITLE Thermal cross-section and resonance absorption integral23529 1 3 of Pu240 23529 1 4 AUTHOR (R.B.Tattersall) 23529 1 5 REFERENCE (R,AEEW-R-115,1962) 23529 1 6 REL-REF (I,,R.B.Tattersall+,J,JNE/A,12,32,1960) 23529 1 7 Exp.technique 23529 1 8 (R,,C.H.Westcott,R,CRRP-960,1960) 23529 1 9 (R,,,R,BNL-325,1958) and Supplement of 1960 year. 23529 1 10 INSTITUTE (2UK WIN) 23529 1 11 FACILITY (OSCIP,2UK HAR) Dimple Pile oscillator at Harwell 23529 1 12 INC-SPECT Pure thermal ( T=20 deg C, r= (6+-4)*10**-4 ) and 23529 1 13 pile type ( T=42+-5 deg C, r=0.077+-0.004) spectra; 23529 1 14 r thermal/epithermal ratio. 23529 1 15 SAMPLE .Pu samples as Pu(SO(4))(2) in dilute D(2)SO(4). 23529 1 16 Pu-240 - 91.5 % , Pu-239 - 6.87+-0.07 %, 23529 1 17 Pu-241 - 1.54+-0.05 %, Pu-242 - 0.069 %. 23529 1 18 Number of atoms: 23529 1 19 Pu-240 - 1.722E+21 (+-0.5%), Pu-239 - 1.296E+20, 23529 1 20 Pu-2141 - 2.900E+19, Pu-242 - 1.298E+18, 23529 1 21 S - 3.763E+21 . 23529 1 22 . Boron samples as solution B(2)O(3) in D(2)O. 23529 1 23 . All samples in polyethylene bottles of ~ 2.5 cm 23529 1 24 diameter, 30 cm long, 140 ml volume. 23529 1 25 ANALYSIS Effective CS SIG=SIGabsorption*(1-W*ETA), 23529 1 26 where W was determined at measurements with U-233, 23529 1 27 U-235, Pu-239 and using data from rel.refs. of 23529 1 28 C.H.Westcott and BNL-325 to be 23529 1 29 1.074+-0.008 for thermal spectrum, 23529 1 30 0.75+-0.1 for pile spectrum. 23529 1 31 ERR-ANALYS (ERR-1) Pu-240 atoms number error - 0.5% 23529 1 32 HISTORY (20190604C) M.M. 23529 1 33 ENDBIB 31 0 23529 1 34 COMMON 1 3 23529 1 35 ERR-1 23529 1 36 PER-CENT 23529 1 37 0.5 23529 1 38 ENDCOMMON 3 0 23529 1 39 ENDSUBENT 38 0 23529 199999 SUBENT 23529002 20190604 228023529 2 1 BIB 6 9 23529 2 2 REACTION (94-PU-240(N,ABS),,SIG,,MXW) 23529 2 3 INC-SPECT Thermal spectrum 23529 2 4 CORRECTION Value before correction for residual resonance 23529 2 5 absorption - 303.+-8. b . 23529 2 6 MONITOR (5-B-0(N,TOT),,SIG) 767.+-3.5 b 23529 2 7 ERR-ANALYS (DATA-ERR) Type of uncertainty is not explained in the 23529 2 8 article. 23529 2 9 STATUS (TABLE) Table II of rep. AEEW-R-115,1962 - value before23529 2 10 correction, text page 5 - value after correction. 23529 2 11 ENDBIB 9 0 23529 2 12 NOCOMMON 0 0 23529 2 13 DATA 3 1 23529 2 14 EN-DUMMY DATA DATA-ERR 23529 2 15 EV B B 23529 2 16 0.0253 298. 9. 23529 2 17 ENDDATA 3 0 23529 2 18 ENDSUBENT 17 0 23529 299999 SUBENT 23529003 20190604 228023529 3 1 BIB 5 10 23529 3 2 REACTION (94-PU-240(N,ABS),,SIG,,,DERIV) CS for 2200 m/sec 23529 3 3 REL-REF (A,,,R,BNL-325,1958) 286+-7 barn 23529 3 4 ANALYSIS Derived from measured data for thermal spectrum using 23529 3 5 Westcott g-factor 1.027 . 23529 3 6 ERR-ANALYS (DATA-ERR) Type of uncertainty is not explained in the 23529 3 7 article. 23529 3 8 STATUS (TABLE) Text page 5 of rep. AEEW-R-115,1962 23529 3 9 (DEP,23529002) Directly measured data for thermal 23529 3 10 spectrum 23529 3 11 . These data supersede 20638.072 23529 3 12 ENDBIB 10 0 23529 3 13 NOCOMMON 0 0 23529 3 14 DATA 3 1 23529 3 15 EN DATA DATA-ERR 23529 3 16 EV B B 23529 3 17 0.0253 290. 9. 23529 3 18 ENDDATA 3 0 23529 3 19 ENDSUBENT 18 0 23529 399999 SUBENT 23529004 20190604 228023529 4 1 BIB 6 13 23529 4 2 REACTION 1(94-PU-240(N,ABS),,SIG,,SPA) 23529 4 3 2(94-PU-240(N,ABS),,SIG,,SPA) 23529 4 4 3(94-PU-240(N,ABS),,SIG,,SPA) 23529 4 5 INC-SPECT Pile spectrum 23529 4 6 SAMPLE Three samples of stock solution fraction: 23529 4 7 1 0.210 23529 4 8 2 0.105 23529 4 9 3 0.063 23529 4 10 MONITOR (5-B-0(N,TOT),,SIG) 767.+-3.5 b 23529 4 11 ERR-ANALYS (DATA-ERR) Type of uncertainty is not explained in the 23529 4 12 article. 23529 4 13 STATUS (TABLE) Table III of rep. AEEW-R-115,1962 23529 4 14 These data superseed 20638.072 23529 4 15 ENDBIB 13 0 23529 4 16 COMMON 1 3 23529 4 17 EN-DUMMY 23529 4 18 EV 23529 4 19 0.0253 23529 4 20 ENDCOMMON 3 0 23529 4 21 DATA 6 1 23529 4 22 DATA 1DATA-ERR 1DATA 2DATA-ERR 2DATA 3DATA-ERR 323529 4 23 B B B B B B 23529 4 24 1039. 31. 1079. 46. 1037. 73. 23529 4 25 ENDDATA 3 0 23529 4 26 ENDSUBENT 25 0 23529 499999 SUBENT 23529005 20190604 228023529 5 1 BIB 7 25 23529 5 2 REACTION 1(94-PU-240(N,ABS),,RI,,RNV) 23529 5 3 2(94-PU-240(N,ABS),,RI,,RNV) 23529 5 4 3(94-PU-240(N,ABS),,RI,,RNV) 23529 5 5 SAMPLE Three samples of stock solution fraction: 23529 5 6 1 0.210 23529 5 7 2 0.105 23529 5 8 3 0.063 23529 5 9 MONITOR (79-AU-197(N,ABS),,RI) 1513.+-60. b 23529 5 10 ANALYSIS RI was derived from directly measured data by equation:23529 5 11 RI=(SQRT(PI)/2.)*(1/r)*SQRT(T0/T)* 23529 5 12 (SIGeff-SIGm*(gpile/gthermal)), 23529 5 13 gpile, gthermal - g-factors, 23529 5 14 SIGm=g*SIG0, 23529 5 15 T0,T - temperture of thermal and pile spectrum. 23529 5 16 REL-REF (A,,,R,BNL-325,1958) 23529 5 17 Derived from res.pars 8200+-170 barn 23529 5 18 (A,,N.G.Sioestrand+,R,AEEW-M-188,1962) ( year is not 23529 5 19 known exacly, mentioned as "to be published)" 23529 5 20 Derived from res.parameters 8370+-380 barn 23529 5 21 Both are quite consistent with measured . 23529 5 22 ERR-ANALYS (DATA-ERR) Do not include contribution from an error on23529 5 23 r*sqrt(T/T0) = 0.085+-0.004 23529 5 24 STATUS (TABLE) Table III of rep. AEEW-R-115,1962 23529 5 25 (DEP,23529004) CS for pile spectrum 23529 5 26 (DEP,23529003) CS for thermal spectrum 23529 5 27 ENDBIB 25 0 23529 5 28 COMMON 1 3 23529 5 29 EN-MIN 23529 5 30 EV 23529 5 31 0.133 23529 5 32 ENDCOMMON 3 0 23529 5 33 DATA 6 1 23529 5 34 DATA 1DATA-ERR 1DATA 2DATA-ERR 2DATA 3DATA-ERR 323529 5 35 B B B B B B 23529 5 36 7430. 320. 7840. 470. 7410. 730. 23529 5 37 ENDDATA 3 0 23529 5 38 ENDSUBENT 37 0 23529 599999 ENDENTRY 5 0 2352999999999