ENTRY 10734 20221223 1073400000001
SUBENT 10734001 20221223 20231011 1073400100001
BIB 11 42 1073400100002
TITLE The fission cross sections of plutonium-239 and 1073400100003
plutonium-242 relative to uranium-235 from 0.1 to 1073400100004
10 MeV 1073400100005
AUTHOR (J.W.Meadows) 1073400100006
INSTITUTE (1USAANL) 1073400100007
REFERENCE (J,NSE,68,360,1978) 1073400100008
(R,ANL-NDM-83,1983) Revised data in table 1073400100009
FACILITY (DYNAM,1USAANL) Argonne 8 MeV Tandem Dynamitron 1073400100010
INC-SOURCE (P-LI7) for below En~5 MeV 1073400100011
Targets produced by evaporation of Li on Ta backing. 1073400100012
Target thicknesses about 200 keV above 2 MeV neutron 1073400100013
energy but thinner at lower energies. 1073400100014
(D-D) for above En~5 MeV 1073400100015
Deuterium gas in a 2-cm-long cell filled to 2 atm. 1073400100016
METHOD (TOF) Pulsed beam and fast timing used to reduce and 1073400100017
measure time independent background 1073400100018
DETECTOR (IOCH) Samples back-to-back in low mass double 1073400100019
ionization chamber using methane as counter gas 1073400100020
placed 5 cm from neutron source. 1073400100021
CORRECTION Corrected for: 1073400100022
- second 7Li(p,n) group, 1073400100023
- 7Li and d break-up neutrons, 1073400100024
- scattering in detector and neutron source assembly, 1073400100025
- pulse-height distribution below bias level. 1073400100026
Sample geometry differences eliminated by measurements 1073400100027
in both detector orientations. 1073400100028
Momentum effects reduced by same procedure. 1073400100029
Corrections made for remaining momentum effects, 1073400100030
deposit thickness and fragment angular distributions. 1073400100031
Background from (d,n) reactions with gas target 1073400100032
assembly measured with empty gas cell. 1073400100033
STATUS (APRVD) J.W.Meadows, 1984/3/2. 1073400100034
HISTORY (19780404C) 1073400100035
(19781107U) BIB corrections 1073400100036
(19790110A) Reference update. BIB correction. 1073400100037
(19831230A) Revised as per ANL-NDM-83. 1073400100038
(20090911A) VM:Updated to new date formats,lower case. 1073400100039
BIB updates. 1073400100040
(20101027A) VM: 242Pu data moved from data set 10749. 1073400100041
BIB updates. 1073400100042
(20190722A) On. Major alterations in 002-003. 1073400100043
(20221223A) On. Major alterations in 002-003. 1073400100044
ENDBIB 42 0 1073400100045
NOCOMMON 0 0 1073400100046
ENDSUBENT 45 0 1073400199999
SUBENT 10734002 20221223 20231011 1073400200001
BIB 9 43 1073400200002
REACTION 1((94-PU-239(N,F),,SIG)/(92-U-235(N,F),,SIG)) 1073400200003
2(94-PU-239(N,F),,SIG) 1073400200004
SAMPLE Samples deposited on 0.25-mm thick stainless steel 1073400200005
or 0.12-mm thick Mo plates by electrodeposition or 1073400200006
vacuum evaporation. 1073400200007
Mass ratios measured by relative thermal fission rates 1073400200008
of 235U sample and high purity 239Pu sample. 1073400200009
Also measured by absolute alpha counting of 239Pu and 1073400200010
235U containing about 1% 234U. 1073400200011
(94-PU-239,ENR=0.99952) 1073400200012
(94-PU-240,ENR=0.00048) 1073400200013
ANALYSIS 230Pu(n,f)/235U(n,f) shape ratio normalized to the 1073400200014
absolute ratio measured at 2.232, 2.476, 2.792 and 1073400200015
2.975 MeV. 1073400200016
MONITOR 2(92-U-235(N,F),,SIG) 1073400200017
MONIT-REF 2(,,3,ENDF/B-V,,1978) 1073400200018
ERR-ANALYS1(ERR-T) Total error 1073400200019
- secondary source reactions (20% of correction) 1073400200020
- propagation from neutron energy error (~20% of the 1073400200021
energy resolution) 1073400200022
(ERR-1,,,F) Normalization of shape ratio: 1073400200023
- 234U half life (0.12%) 1073400200024
- 239Pu half life (0.05%) 1073400200025
- 239Pu/235U thermal ratio (0.25%) 1073400200026
- isotope analysis (0.19%) 1073400200027
- alpha-counting excluding statistics (0.15%) 1073400200028
- thickness correction (0.19%) 1073400200029
- extrapolation (0.20%) 1073400200030
- dead time correction (0.25%) 1073400200031
- scattering correction (0.30%) 1073400200032
- statistical - alpha counting etc. (0.55%) 1073400200033
(ERR-2,,,U) Uncorrelated error, which principle due to 1073400200034
the counting statistics, but a part is based on the 1073400200035
consistency of repeated measurements. 1073400200036
COMMENT By compiler (2019-07-22): 1073400200037
The uncorrelated error (ERR-2) is smaller than the 1073400200038
total error (ERR-T) at 1.622 MeV on the ANL-NDM-83. 1073400200039
The compiler assumes "1.36" should read "1.63". 1073400200040
STATUS (TABLE) Table XV of ANL-NDM-83 1073400200041
HISTORY (19790110A) BIB correction and addition. 1073400200042
(20190722A) On. ERR-S -> ERR-2. ERR-1 added. 1073400200043
(20221223A) On. EN-RSL-FW=1.196 MeV -> 0.196 MeV at 1073400200044
5.867 MeV 1073400200045
ENDBIB 43 0 1073400200046
COMMON 1 3 1073400200047
ERR-1 1073400200048
PER-CENT 1073400200049
0.82 1073400200050
ENDCOMMON 3 0 1073400200051
DATA 6 73 1073400200052
EN EN-RSL-FW DATA 1ERR-2 1ERR-T 1DATA 21073400200053
MEV MEV NO-DIM PER-CENT PER-CENT B 1073400200054
0.146 0.020 0.968 0.90 1.28 1.417 1073400200055
0.172 0.019 1.107 1.28 1.57 1.572 1073400200056
0.197 0.019 1.094 0.90 1.29 1.511 1073400200057
0.220 0.018 1.131 1.34 1.62 1.519 1073400200058
0.247 0.017 1.157 0.88 1.25 1.510 1073400200059
0.268 0.017 1.215 1.28 1.56 1.559 1073400200060
0.268 0.058 1.191 0.99 1.62 1.529 1073400200061
0.294 0.022 1.266 1.34 1.62 1.602 1073400200062
0.311 0.016 1.260 1.38 1.63 1.583 1073400200063
0.323 0.066 1.264 0.99 1.65 1.580 1073400200064
0.336 0.016 1.256 1.42 1.66 1.561 1073400200065
0.348 0.016 1.308 1.46 1.69 1.617 1073400200066
0.384 0.062 1.286 0.98 1.46 1.565 1073400200067
0.391 0.062 1.340 1.49 1.83 1.625 1073400200068
0.452 0.060 1.346 0.94 1.36 1.592 1073400200069
0.500 0.046 1.372 0.91 1.28 1.601 1073400200070
0.550 0.045 1.393 0.94 1.27 1.609 1073400200071
0.598 0.055 1.428 0.80 1.22 1.635 1073400200072
0.650 0.054 1.418 1.04 1.40 1.616 1073400200073
0.687 0.053 1.422 1.71 1.95 1.618 1073400200074
0.746 0.052 1.480 1.05 1.37 1.683 1073400200075
0.795 0.050 1.546 1.81 2.00 1.760 1073400200076
0.846 0.049 1.511 1.06 1.39 1.732 1073400200077
0.877 0.080 1.499 1.86 2.11 1.736 1073400200078
0.943 0.047 1.431 1.51 1.74 1.712 1073400200079
0.980 0.047 1.432 1.49 1.70 1.743 1073400200080
0.993 0.046 1.472 0.94 1.25 1.794 1073400200081
1.045 0.045 1.416 1.77 1.95 1.721 1073400200082
1.099 0.044 1.443 0.93 1.26 1.753 1073400200083
1.140 0.074 1.480 0.95 1.32 1.799 1073400200084
1.196 0.043 1.467 0.93 1.25 1.789 1073400200085
1.234 0.072 1.497 0.95 1.34 1.829 1073400200086
1.332 0.070 1.559 0.95 1.31 1.921 1073400200087
1.429 0.067 1.603 1.41 1.64 1.992 1073400200088
1.526 0.065 1.581 1.41 1.64 1.984 1073400200089
1.622 0.063 1.544 1.45 1.63 1.957 1073400200090
1.720 0.061 1.503 1.43 1.65 1.924 1073400200091
1.818 0.059 1.555 1.47 1.68 2.005 1073400200092
1.893 0.120 1.550 1.19 1.44 2.005 1073400200093
1.924 0.056 1.551 1.46 1.67 2.009 1073400200094
2.021 0.054 1.609 1.74 1.92 2.089 1073400200095
2.232 0.111 1.554 0.68 1.07 2.005 1073400200096
2.476 0.106 1.518 0.67 1.06 1.929 1073400200097
2.792 0.101 1.532 0.74 1.10 1.901 1073400200098
2.975 0.096 1.543 0.57 1.00 1.885 1073400200099
3.226 0.092 1.544 0.86 1.19 1.851 1073400200100
3.470 0.087 1.580 0.75 1.11 1.861 1073400200101
3.719 0.083 1.581 0.72 1.10 1.826 1073400200102
3.968 0.080 1.568 0.74 1.11 1.779 1073400200103
4.221 0.076 1.579 1.03 1.33 1.776 1073400200104
4.472 0.074 1.573 1.11 1.39 1.752 1073400200105
4.724 0.074 1.607 1.06 1.36 1.752 1073400200106
4.972 0.070 1.607 1.23 1.51 1.715 1073400200107
5.017 0.264 1.625 0.92 1.24 1.728 1073400200108
5.309 0.235 1.640 0.88 1.21 1.718 1073400200109
5.594 0.211 1.663 0.99 1.29 1.744 1073400200110
5.867 0.196 1.663 0.96 1.35 1.791 1073400200111
6.137 0.180 1.609 0.99 1.52 1.894 1073400200112
6.401 0.172 1.514 1.01 1.50 1.978 1073400200113
6.660 0.163 1.430 1.04 1.42 2.056 1073400200114
6.921 0.154 1.388 1.07 1.41 2.120 1073400200115
7.176 0.146 1.372 1.01 1.33 2.224 1073400200116
7.432 0.142 1.319 0.99 1.29 2.243 1073400200117
7.686 0.138 1.312 0.94 1.25 2.299 1073400200118
7.936 0.133 1.301 0.97 1.27 2.313 1073400200119
8.182 0.132 1.363 1.00 1.29 2.431 1073400200120
8.428 0.131 1.316 0.99 1.29 2.347 1073400200121
8.673 0.131 1.315 0.99 1.29 2.340 1073400200122
8.918 0.131 1.325 1.02 1.32 2.351 1073400200123
9.161 0.132 1.307 1.03 1.35 2.313 1073400200124
9.407 0.133 1.344 0.99 1.33 2.370 1073400200125
9.648 0.137 1.317 0.97 1.36 2.316 1073400200126
9.903 0.142 1.308 0.99 1.55 2.288 1073400200127
ENDDATA 75 0 1073400200128
ENDSUBENT 127 0 1073400299999
SUBENT 10734003 20221223 20231011 1073400300001
BIB 7 35 1073400300002
REACTION 1((94-PU-242(N,F),,SIG)/(92-U-235(N,F),,SIG)) 1073400300003
2(94-PU-242(N,F),,SIG) 1073400300004
SAMPLE Samples deposited on 0.25-mm thick stainless steel 1073400300005
or 0.12-mm thick Mo plates by electrodeposition. 1073400300006
Mass ratios measured by absolute alpha counting 1073400300007
of 242Pu samples containing 239Pu and 235U samples 1073400300008
containing 234U. 1073400300009
MONITOR 2(92-U-235(N,F),,SIG) 1073400300010
MONIT-REF 2(,,3,ENDF/B-V,,1978) 1073400300011
ERR-ANALYS1(ERR-T) Total error 1073400300012
- secondary source reactions (20% of correction) 1073400300013
- propagation from neutron energy error (~20% of the 1073400300014
energy resolution) 1073400300015
(ERR-1,,,F) Normalization of shape ratio: 1073400300016
- 233U half-life (0.02%) 1073400300017
- 234U half-life (0.05%) 1073400300018
- 239Pu half-life (0.05%) 1073400300019
- 239Pu/235U thermal ratio (0.25%) 1073400300020
- isotopic analysis (0.32%) 1073400300021
- isotopic dilution (0.25%) 1073400300022
- calorimetric analysis (0.10%) 1073400300023
- alpha-counting excluding statistics (0.52%) 1073400300024
- thickness correction (0.10%) 1073400300025
- extrapolation to zero bias (0.20%) 1073400300026
- dead time correction (0.25%) 1073400300027
- scattering correction (0.30%) 1073400300028
- statistical - alpha counting etc. (0.60%) 1073400300029
(ERR-2,,,U) Uncorrelated error, which principle due to 1073400300030
the counting statistics, but a part is based on the 1073400300031
consistency of repeated measurements. 1073400300032
STATUS (TABLE) Table XVII of ANL-NDM-83 1073400300033
HISTORY (20101027C) Data moved from 10749.002. 1073400300034
(20190722A) On. ERR-S -> ERR-2. ERR-1 added. 1073400300035
(20221223A) On. EN-RSL-FW=0.105 MeV -> 0.100 MeV 1073400300036
at 2.736 MeV; EN=7.293 MeV -> 7.193 MeV 1073400300037
ENDBIB 35 0 1073400300038
COMMON 1 3 1073400300039
ERR-1 1073400300040
PER-CENT 1073400300041
1.04 1073400300042
ENDCOMMON 3 0 1073400300043
DATA 6 49 1073400300044
EN EN-RSL-FW DATA 1ERR-2 1ERR-T 1DATA 21073400300045
MEV MEV NO-DIM PER-CENT PER-CENT B 1073400300046
0.397 0.051 0.0875 3.22 10.25 0.1060 1073400300047
0.446 0.049 0.1234 2.90 8.52 0.1463 1073400300048
0.495 0.047 0.1817 2.30 8.52 0.2123 1073400300049
0.545 0.046 0.2432 1.96 5.74 0.2812 1073400300050
0.592 0.045 0.312 1.82 4.85 0.358 1073400300051
0.693 0.042 0.483 1.52 4.44 0.549 1073400300052
0.791 0.040 0.710 1.90 3.48 0.808 1073400300053
0.889 0.039 0.954 1.18 2.25 1.110 1073400300054
0.987 0.038 1.113 1.22 1.87 1.355 1073400300055
1.156 0.036 1.282 1.02 1.50 1.559 1073400300056
1.233 0.071 1.131 1.03 2.50 1.382 1073400300057
1.330 0.068 1.164 1.02 1.66 1.433 1073400300058
1.429 0.067 1.117 1.03 1.48 1.387 1073400300059
1.528 0.065 1.096 0.99 1.43 1.375 1073400300060
1.626 0.063 1.126 1.01 1.45 1.427 1073400300061
1.772 0.062 1.104 1.03 1.45 1.418 1073400300062
1.821 0.061 1.104 1.03 1.45 1.423 1073400300063
1.920 0.060 1.132 1.03 1.45 1.465 1073400300064
1.984 0.118 1.133 0.38 1.09 1.469 1073400300065
2.241 0.110 1.101 0.39 1.09 1.419 1073400300066
2.490 0.105 1.092 0.41 1.11 1.386 1073400300067
2.736 0.100 1.098 0.39 1.09 1.368 1073400300068
2.982 0.095 1.133 0.38 1.11 1.383 1073400300069
3.231 0.090 1.138 1.10 1.50 1.363 1073400300070
3.480 0.085 1.148 2.02 1.41 1.350 1073400300071
3.726 0.081 1.125 1.01 1.46 1.298 1073400300072
3.972 0.079 1.147 1.33 1.72 1.300 1073400300073
4.479 0.075 1.093 1.06 1.65 1.216 1073400300074
4.623 0.295 1.101 1.09 1.49 1.210 1073400300075
4.728 0.074 1.109 0.96 1.74 1.208 1073400300076
5.025 0.254 1.094 1.06 1.48 1.162 1073400300077
5.320 0.223 1.142 1.06 1.66 1.196 1073400300078
5.603 0.205 1.216 1.05 1.70 1.275 1073400300079
5.963 0.187 1.265 1.06 1.59 1.393 1073400300080
6.150 0.177 1.348 1.15 1.55 1.595 1073400300081
6.415 0.166 1.284 1.14 1.61 1.688 1073400300082
6.676 0.154 1.262 1.15 1.60 1.823 1073400300083
6.937 0.145 1.209 1.06 1.52 1.852 1073400300084
7.193 0.137 1.195 1.17 1.57 1.912 1073400300085
7.449 0.132 1.125 1.12 1.52 1.917 1073400300086
7.701 0.128 1.122 1.12 1.52 1.968 1073400300087
7.953 0.126 1.117 1.05 1.46 1.986 1073400300088
8.201 0.124 1.105 1.10 1.50 1.871 1073400300089
8.696 0.120 1.091 1.20 1.57 1.939 1073400300090
8.940 0.120 1.085 1.20 1.57 1.923 1073400300091
9.185 0.120 1.107 1.14 1.53 1.957 1073400300092
9.431 0.120 1.095 1.14 1.53 1.930 1073400300093
9.673 0.121 1.084 1.14 1.53 1.904 1073400300094
9.923 0.122 1.078 1.20 1.59 1.887 1073400300095
ENDDATA 51 0 1073400300096
ENDSUBENT 95 0 1073400399999
ENDENTRY 3 0 1073499999999