ENTRY 14674 20210126 14791467400000001 SUBENT 14674001 20210126 14791467400100001 BIB 8 42 1467400100002 TITLE 236U resonance parameters at 5.467 eV from neutron 1467400100003 transmission measurements using thin liquid samples 1467400100004 AUTHOR (D.P.Barry,M.J.Rapp,R.C.Block,B.E.Epping,G.Leinweber, 1467400100005 Y.Danon, A.Daskalakis,E.Blain,B.McDermott) 1467400100006 REFERENCE (J,PNE,86,11,2016) 1467400100007 #doi:10.1016/j.pnucene.2015.10.001 1467400100008 INSTITUTE (1USAKAP,1USARPI) 1467400100009 FACILITY (LINAC,1USARPI) 1467400100010 SAMPLE This RPI-2014 transmission experiment used three 1467400100011 liquid samples containing different concentrations 1467400100012 (i.e., thickness) of 236U. The thickness for each 1467400100013 sample was chosen to produce a non-saturated 1467400100014 transmission resonance at 5.467 eV. The thickest 1467400100015 sample provided a minimum transmission of 1467400100016 approximately 0.1. 1467400100017 (92-U-234,ENR=0.001182) 1467400100018 (92-U-235,ENR=0.093498) 1467400100019 (92-U-236,ENR=0.891480) 1467400100020 (92-U-238,ENR=0.013827) 1467400100021 METHOD (TOF) The neutron transmission experiment was 1467400100022 performed at the 15 m flight station. The RPI 1467400100023 resolution function parameters: 1467400100024 Parameter Local Distant units 1467400100025 t1 234.67178 277.50783 ns 1467400100026 t2 2.5346E-02 2.5925E-02 1/eV 1467400100027 t3 237.72025 280.84240 ns 1467400100028 t4 3.0740E-02 3.1504E-02 1/eV 1467400100029 t5 176.81659 196.48548 ns 1467400100030 L0 529.04249 391.45612 ns 1467400100031 L1 215.32856 162.51178 ns 1467400100032 L2 21.89386 24.09497 ns 1467400100033 a1 4.2708E-04 2.6777E-04 1/ns 1467400100034 a2 2.4076E-02 2.4076E-02 1/eV 1467400100035 a3 6.3000E-04 6.3000E-04 1/ns 1467400100036 a4 3.53100 3.53100 1/eV 1467400100037 a5 1.5368E-03 1.7303E-03 1/ns 1467400100038 t0 931.88413 929.11081 ns 1467400100039 A2 70.52550 71.89694 none 1467400100040 A3 4.9918E-03 4.9825E-03 1/ns 1467400100041 A4 0.39671 0.39818 none 1467400100042 A5 7.2725E-04 6.4313E-04 1/ns 1467400100043 HISTORY (20210126C) BP 1467400100044 ENDBIB 42 0 1467400100045 NOCOMMON 0 0 1467400100046 ENDSUBENT 45 0 1467400199999 SUBENT 14674002 20210126 14791467400200001 BIB 4 23 1467400200002 REACTION (92-U-236(N,TOT),,TRN) 1467400200003 SAMPLE Thick liquid sample 1467400200004 Highest concentration of 236U 1467400200005 Isotope Number density (atoms/b) Uncertainty (atoms/b) 1467400200006 234U 2.4728x10-7 4.9555x10-8 1467400200007 235U 1.9472x10-5 3.1411x10-7 1467400200008 236U 1.8497x10-4 2.9837x10-6 1467400200009 238U 2.8333x10-6 6.7210x10-8 1467400200010 H 3.0800x10-7 4.3844x10-9 1467400200011 D 6.2100x10-2 8.8400x10-4 1467400200012 N 1.3300x10-3 1.8933x10-5 1467400200013 O 3.4400x10-2 4.8969x10-4 1467400200014 Total 0.098 0.001 1467400200015 ERR-ANALYS (ERR-S) The error bars for the RPI-2014 data points 1467400200016 determined from the counting statistics from the 1467400200017 measurement. The contribution to the overall 1467400200018 uncertainty from each randomly sampled input value 1467400200019 was investigated. The background, resolution function, 1467400200020 and sample thickness were found to be the dominant 1467400200021 contributors. 1467400200022 STATUS (CURVE) Fig. 2, page 16. 1467400200023 (COREL,14674003) medium liquid sample 1467400200024 (COREL,14674004) thin liquid sample 1467400200025 ENDBIB 23 0 1467400200026 COMMON 1 3 1467400200027 THICKNESS 1467400200028 ATOMS/B 1467400200029 1.8497E-04 1467400200030 ENDCOMMON 3 0 1467400200031 DATA 3 45 1467400200032 EN DATA ERR-S 1467400200033 EV NO-DIM NO-DIM 1467400200034 5.212 0.652 0.009 1467400200035 5.222 0.650 0.011 1467400200036 5.232 0.645 0.018 1467400200037 5.240 0.650 0.016 1467400200038 5.258 0.645 0.016 1467400200039 5.276 0.616 0.009 1467400200040 5.286 0.609 0.011 1467400200041 5.304 0.598 0.011 1467400200042 5.323 0.586 0.011 1467400200043 5.331 0.584 0.018 1467400200044 5.340 0.559 0.011 1467400200045 5.351 0.546 0.009 1467400200046 5.360 0.505 0.014 1467400200047 5.369 0.475 0.011 1467400200048 5.378 0.425 0.002 1467400200049 5.387 0.364 0.002 1467400200050 5.397 0.305 0.007 1467400200051 5.406 0.246 0.005 1467400200052 5.416 0.185 0.011 1467400200053 5.425 0.144 0.009 1467400200054 5.436 0.110 0.007 1467400200055 5.445 0.090 0.011 1467400200056 5.455 0.083 0.009 1467400200057 5.464 0.088 0.009 1467400200058 5.473 0.097 0.007 1467400200059 5.483 0.117 0.007 1467400200060 5.495 0.147 0.007 1467400200061 5.503 0.192 0.009 1467400200062 5.512 0.237 0.009 1467400200063 5.522 0.301 0.011 1467400200064 5.533 0.367 0.014 1467400200065 5.542 0.423 0.007 1467400200066 5.551 0.469 0.011 1467400200067 5.560 0.518 0.007 1467400200068 5.570 0.557 0.007 1467400200069 5.581 0.577 0.009 1467400200070 5.592 0.593 0.014 1467400200071 5.601 0.614 0.009 1467400200072 5.612 0.614 0.009 1467400200073 5.623 0.609 0.011 1467400200074 5.631 0.636 0.009 1467400200075 5.642 0.648 0.018 1467400200076 5.654 0.629 0.007 1467400200077 5.665 0.645 0.007 1467400200078 5.674 0.654 0.009 1467400200079 ENDDATA 47 0 1467400200080 ENDSUBENT 79 0 1467400299999 SUBENT 14674003 20210126 14791467400300001 BIB 4 22 1467400300002 REACTION (92-U-236(N,TOT),,TRN) 1467400300003 SAMPLE Medium liquid sample Medium concentration of 236U 1467400300004 Isotope Number density (atoms/b) Uncertainty (atoms/b)1467400300005 234U 1.6211x10-7 3.2487x10-8 1467400300006 235U 1.2785x10-5 2.0624x10-7 1467400300007 236U 1.2118x10-4 1.9548x10-6 1467400300008 238U 1.8644x10-6 4.4227x10-8 1467400300009 H 3.0800x10-7 4.3844x10-9 1467400300010 D 6.2200x10-2 8.8543x10-4 1467400300011 N 1.3300x10-3 1.8933x10-5 1467400300012 O 3.4500x10-2 4.9111x10-4 1467400300013 Total 0.098 0.001 1467400300014 ERR-ANALYS (ERR-S) The error bars for the RPI-2014 data points 1467400300015 determined from the counting statistics from the 1467400300016 measurement. The contribution to the overall 1467400300017 uncertainty from each randomly sampled input value 1467400300018 was investigated. The background, resolution function, 1467400300019 and sample thickness were found to be the dominant 1467400300020 contributors. 1467400300021 STATUS (CURVE) Fig. 2, page 16. 1467400300022 (COREL,14674002) thick liquid sample 1467400300023 (COREL,14674004) thin liquid sample 1467400300024 ENDBIB 22 0 1467400300025 COMMON 1 3 1467400300026 THICKNESS 1467400300027 ATOMS/B 1467400300028 1.2118E-04 1467400300029 ENDCOMMON 3 0 1467400300030 DATA 3 36 1467400300031 EN DATA ERR-S 1467400300032 EV NO-DIM NO-DIM 1467400300033 5.212 0.668 0.027 1467400300034 5.249 0.664 0.018 1467400300035 5.267 0.661 0.007 1467400300036 5.284 0.650 0.023 1467400300037 5.305 0.641 0.025 1467400300038 5.313 0.632 0.023 1467400300039 5.323 0.625 0.011 1467400300040 5.331 0.611 0.009 1467400300041 5.340 0.600 0.009 1467400300042 5.350 0.589 0.009 1467400300043 5.359 0.559 0.014 1467400300044 5.369 0.539 0.011 1467400300045 5.379 0.493 0.007 1467400300046 5.387 0.457 0.011 1467400300047 5.398 0.398 0.009 1467400300048 5.407 0.351 0.014 1467400300049 5.415 0.292 0.014 1467400300050 5.426 0.237 0.011 1467400300051 5.436 0.199 0.009 1467400300052 5.445 0.174 0.011 1467400300053 5.456 0.162 0.011 1467400300054 5.466 0.167 0.011 1467400300055 5.474 0.183 0.010 1467400300056 5.484 0.201 0.014 1467400300057 5.494 0.242 0.011 1467400300058 5.503 0.283 0.009 1467400300059 5.512 0.339 0.009 1467400300060 5.522 0.398 0.009 1467400300061 5.532 0.446 0.009 1467400300062 5.542 0.491 0.011 1467400300063 5.552 0.539 0.011 1467400300064 5.561 0.573 0.007 1467400300065 5.614 0.645 0.014 1467400300066 5.623 0.650 0.014 1467400300067 5.674 0.664 0.020 1467400300068 5.684 0.668 0.018 1467400300069 ENDDATA 38 0 1467400300070 ENDSUBENT 69 0 1467400399999 SUBENT 14674004 20210126 14791467400400001 BIB 4 23 1467400400002 REACTION (92-U-236(N,TOT),,TRN) 1467400400003 SAMPLE Thin liquid sample 1467400400004 Lowest concentration of 236U 1467400400005 Isotope Number density (atoms/b) Uncertainty (atoms/b) 1467400400006 234U 1.0884x10-7 2.1812x10-8 1467400400007 235U 8.5575x10-6 1.3804x10-7 1467400400008 236U 8.1385x10-5 1.3128x10-6 1467400400009 238U 1.2522x10-6 2.9704x10-8 1467400400010 H 3.1000x10-7 4.4129x10-9 1467400400011 D 6.2400x10-2 8.8827x10-4 1467400400012 N 1.3400x10-3 1.9075x10-5 1467400400013 O 3.4500x10-2 4.9111x10-4 1467400400014 Total 0.098 0.001 1467400400015 ERR-ANALYS (ERR-S) The error bars for the RPI-2014 data points 1467400400016 determined from the counting statistics from the 1467400400017 measurement. The contribution to the overall 1467400400018 uncertainty from each randomly sampled input value 1467400400019 was investigated. The background, resolution function, 1467400400020 and sample thickness were found to be the dominant 1467400400021 contributors. 1467400400022 STATUS (CURVE) Fig. 2, page 16. 1467400400023 (COREL,14674002) thick liquid sample 1467400400024 (COREL,14674003) medium liquid sample 1467400400025 ENDBIB 23 0 1467400400026 COMMON 1 3 1467400400027 THICKNESS 1467400400028 ATOMS/B 1467400400029 8.1385E-05 1467400400030 ENDCOMMON 3 0 1467400400031 DATA 3 37 1467400400032 EN DATA ERR-S 1467400400033 EV NO-DIM NO-DIM 1467400400034 5.204 0.679 0.010 1467400400035 5.249 0.673 0.016 1467400400036 5.294 0.669 0.014 1467400400037 5.303 0.654 0.007 1467400400038 5.314 0.656 0.010 1467400400039 5.332 0.638 0.010 1467400400040 5.341 0.624 0.006 1467400400041 5.351 0.614 0.007 1467400400042 5.360 0.594 0.007 1467400400043 5.369 0.589 0.011 1467400400044 5.380 0.543 0.010 1467400400045 5.388 0.516 0.013 1467400400046 5.398 0.474 0.011 1467400400047 5.407 0.434 0.010 1467400400048 5.417 0.383 0.010 1467400400049 5.426 0.337 0.008 1467400400050 5.436 0.303 0.008 1467400400051 5.445 0.275 0.010 1467400400052 5.454 0.263 0.007 1467400400053 5.465 0.263 0.008 1467400400054 5.473 0.275 0.010 1467400400055 5.484 0.297 0.010 1467400400056 5.493 0.335 0.010 1467400400057 5.502 0.371 0.007 1467400400058 5.513 0.429 0.011 1467400400059 5.523 0.474 0.011 1467400400060 5.533 0.519 0.008 1467400400061 5.542 0.550 0.010 1467400400062 5.552 0.589 0.013 1467400400063 5.561 0.607 0.010 1467400400064 5.572 0.634 0.013 1467400400065 5.581 0.646 0.011 1467400400066 5.601 0.652 0.011 1467400400067 5.631 0.669 0.014 1467400400068 5.653 0.671 0.010 1467400400069 5.684 0.676 0.016 1467400400070 5.695 0.676 0.014 1467400400071 ENDDATA 39 0 1467400400072 ENDSUBENT 71 0 1467400499999 SUBENT 14674005 20210126 14791467400500001 BIB 5 19 1467400500002 REACTION 1(92-U-236(N,0),,EN) 1467400500003 2(92-U-236(N,G),,WID) 1467400500004 3(92-U-236(N,EL),,WID) 1467400500005 4(92-U-236(N,F),,WID) 1467400500006 5(92-U-236(N,TOT),,SIG,,RES) 1467400500007 REL-REF (R,,M.B.Chadwick+,J,NDS,112,2887,2011) ENDF/B-VII.1 1467400500008 resonance parameters. 1467400500009 ANALYSIS The RPI-2014 resonance parameters were calculated 1467400500010 with the Total Monte Carlo. The RPI-2014 fission 1467400500011 width, Gammaf, was fixed at the ENDF-7.1 value 1467400500012 without any uncertainty. The NJOY code was used to 1467400500013 calculate the peak cross section of 236U at 5.467 eV, 1467400500014 Doppler broadened to 300 K. 1467400500015 ERR-ANALYS (DATA-ERR) No details on sources of uncertainties, 1467400500016 most likely fitting uncertainties. 1467400500017 STATUS (DEP,14674002) 1467400500018 (DEP,14674003) 1467400500019 (DEP,14674004) 1467400500020 (TABLE) Table 6, page 15. 1467400500021 ENDBIB 19 0 1467400500022 NOCOMMON 0 0 1467400500023 DATA 8 1 1467400500024 DATA 1DATA-ERR 1DATA 2DATA-ERR 2DATA 3DATA-ERR 31467400500025 DATA 4DATA 5 1467400500026 EV EV MILLI-EV MILLI-EV MILLI-EV MILLI-EV 1467400500027 MILLI-EV B 1467400500028 5.467 0.005 27.0 1.0 2.13 0.041467400500029 0.290 13571.0 1467400500030 ENDDATA 6 0 1467400500031 ENDSUBENT 30 0 1467400599999 SUBENT 14674006 20210126 14791467400600001 BIB 4 16 1467400600002 REACTION 1(92-U-236(N,0),,EN) 1467400600003 2(92-U-236(N,G),,WID) 1467400600004 3(92-U-236(N,EL),,WID) 1467400600005 4(92-U-236(N,F),,WID) 1467400600006 REL-REF (R,,M.B.Chadwick+,J,NDS,112,2887,2011) ENDF/B-VII.1 1467400600007 resonance parameters. 1467400600008 ANALYSIS The RPI-2014 negative resonance parameter values for 1467400600009 236U were fitted with SAMMY while keeping the 1467400600010 resonance parameters for the 5.467 eV resonance fixed 1467400600011 to the RPI-2014 resonance values. All resonance 1467400600012 parameters from higher energy were taken from 1467400600013 ENDF-7.1. This method preserved the thermal cross 1467400600014 section values of ENDF-7.1 to within 0.5%. 1467400600015 STATUS (DEP,14674002) 1467400600016 (DEP,14674004) 1467400600017 (TABLE) Table 7, page 15. 1467400600018 ENDBIB 16 0 1467400600019 NOCOMMON 0 0 1467400600020 DATA 4 1 1467400600021 DATA 1DATA 2DATA 3DATA 4 1467400600022 EV MILLI-EV MILLI-EV MILLI-EV 1467400600023 -9.7 21.4 4.909 0.08 1467400600024 ENDDATA 3 0 1467400600025 ENDSUBENT 24 0 1467400699999 SUBENT 14674007 20210126 14791467400700001 BIB 5 25 1467400700002 REACTION (92-U-236(N,G)92-U-237,,RI,,,DERIV) 1467400700003 REL-REF (R,,M.B.Chadwick+,J,NDS,112,2887,2011) ENDF/B-VII.1 1467400700004 resonance parameters. 1467400700005 ANALYSIS The RPI-2014 value was calculated using ENDF-7.1 1467400700006 resonance parameters for 236U, while substituting the 1467400700007 RPI-2014 values for the 5.467 eV resonance and the 1467400700008 values for the negative energy resonance. The neutron 1467400700009 capture resonance integral was calculated using a 1467400700010 combination of the NJOY and INTER codes. 1467400700011 ERR-ANALYS (DATA-ERR) The uncertainty on the resonance integral 1467400700012 was found by application of the Total Monte Carlo 1467400700013 (TMC) method. The NJOY and INTER calculations were 1467400700014 performed repeatedly while randomly sampling each of 1467400700015 the RPI-2014 236U resonance parameters from a 1467400700016 Gaussian distribution. The width of each Gaussian 1467400700017 distribution was defined as the uncertainty on the 1467400700018 resonance parameter of interest. The reported 1467400700019 uncertainty on the capture resonance integral is the 1467400700020 standard deviation of the results. The calculations 1467400700021 were repeated 2000 times to ensure that the standard 1467400700022 deviation of the capture resonance integral converged 1467400700023 to less than 0.1%. 1467400700024 STATUS (DEP,14674004) 1467400700025 (DEP,14674005) 1467400700026 (TABLE) Table 8, page 16. 1467400700027 ENDBIB 25 0 1467400700028 NOCOMMON 0 0 1467400700029 DATA 4 1 1467400700030 EN-MIN EN-MAX DATA DATA-ERR 1467400700031 EV MEV B B 1467400700032 0.5 20.0 330.0 5.0 1467400700033 ENDDATA 3 0 1467400700034 ENDSUBENT 33 0 1467400799999 SUBENT 14674008 20210126 14791467400800001 BIB 3 8 1467400800002 REACTION (92-U-236(N,TOT),,SIG,,,DERIV) 1467400800003 ANALYSIS The 236U resonance parameters at 5.467 eV were used 1467400800004 to construct the total cross section using the NJOY 1467400800005 code. The cross section was Doppler broadened to a 1467400800006 temperature of 300 K and the peak value was obtained. 1467400800007 STATUS (DEP,14674005) 1467400800008 (DEP,14674006) 1467400800009 (CURVE) Fig. 3, page 16. 1467400800010 ENDBIB 8 0 1467400800011 NOCOMMON 0 0 1467400800012 DATA 2 97 1467400800013 EN DATA 1467400800014 EV B 1467400800015 5.351 1432.489 1467400800016 5.354 1537.646 1467400800017 5.356 1677.737 1467400800018 5.359 1817.887 1467400800019 5.362 2027.848 1467400800020 5.365 2202.932 1467400800021 5.367 2377.899 1467400800022 5.369 2552.925 1467400800023 5.371 2762.767 1467400800024 5.373 3007.544 1467400800025 5.374 3147.517 1467400800026 5.377 3427.405 1467400800027 5.379 3707.116 1467400800028 5.381 3986.887 1467400800029 5.384 4371.578 1467400800030 5.386 4721.217 1467400800031 5.389 4966.111 1467400800032 5.390 5210.770 1467400800033 5.391 5455.488 1467400800034 5.392 5700.265 1467400800035 5.394 6014.852 1467400800036 5.396 6364.550 1467400800037 5.398 6749.064 1467400800038 5.402 7483.218 1467400800039 5.407 8462.089 1467400800040 5.412 9440.961 1467400800041 5.416 10454.590 1467400800042 5.421 11328.658 1467400800043 5.425 12272.536 1467400800044 5.427 12692.044 1467400800045 5.430 13041.742 1467400800046 5.432 13356.447 1467400800047 5.434 13636.276 1467400800048 5.437 13916.046 1467400800049 5.439 14125.947 1467400800050 5.442 14370.960 1467400800051 5.445 14546.044 1467400800052 5.447 14686.077 1467400800053 5.450 14651.496 1467400800054 5.452 14581.980 1467400800055 5.456 14512.583 1467400800056 5.458 14303.388 1467400800057 5.461 14024.266 1467400800058 5.463 13814.954 1467400800059 5.464 13570.590 1467400800060 5.467 13291.527 1467400800061 5.469 12907.542 1467400800062 5.473 12349.121 1467400800063 5.475 11860.334 1467400800064 5.479 11301.854 1467400800065 5.482 10708.439 1467400800066 5.486 9975.287 1467400800067 5.491 8823.216 1467400800068 5.497 7531.525 1467400800069 5.501 6833.308 1467400800070 5.504 6135.090 1467400800071 5.508 5506.741 1467400800072 5.509 5227.501 1467400800073 5.512 4948.379 1467400800074 5.515 4529.578 1467400800075 5.516 4285.273 1467400800076 5.518 4040.908 1467400800077 5.520 3796.662 1467400800078 5.522 3587.291 1467400800079 5.523 3377.861 1467400800080 5.525 3203.483 1467400800081 5.527 3029.105 1467400800082 5.529 2854.669 1467400800083 5.530 2680.232 1467400800084 5.532 2575.664 1467400800085 5.534 2366.293 1467400800086 5.536 2226.850 1467400800087 5.538 2087.407 1467400800088 5.540 1947.905 1467400800089 5.541 1843.337 1467400800090 5.544 1738.887 1467400800091 5.546 1599.503 1467400800092 5.548 1494.935 1467400800093 5.550 1390.426 1467400800094 5.553 1251.042 1467400800095 5.556 1181.644 1467400800096 5.558 1112.011 1467400800097 5.561 1007.620 1467400800098 5.564 1008.033 1467400800099 5.566 903.524 1467400800100 5.568 868.884 1467400800101 5.570 834.303 1467400800102 5.573 694.919 1467400800103 5.576 695.390 1467400800104 5.578 695.684 1467400800105 5.582 696.156 1467400800106 5.585 626.699 1467400800107 5.587 557.125 1467400800108 5.589 557.478 1467400800109 5.592 557.832 1467400800110 5.595 523.251 1467400800111 5.597 488.729 1467400800112 ENDDATA 99 0 1467400800113 ENDSUBENT 112 0 1467400899999 ENDENTRY 8 0 1467499999999