ENTRY M0504 20190603 M100M050400000001 SUBENT M0504001 20190603 M100M050400100001 BIB 11 42 M050400100002 TITLE Photofission of Th-232, U-238 and U-235 near M050400100003 threshold using a variable energy beam of g-rays. M050400100004 AUTHOR (A.M.Khan,J.W.Knowles) M050400100005 INSTITUTE (1CANCRC) M050400100006 REFERENCE (J,NP/A,179,333,1972) M050400100007 #doi:10.1016/0375-9474(72)90374-0 M050400100008 #NSR: 1972KH01 M050400100009 (C,73PACIFI,1,647,1973) M050400100010 #NSR: 1973ALYV M050400100011 (P,INDC(SEC)-62L,129,1977) M050400100012 #NSR: 1977KNZW M050400100013 INC-SOURCE (QMPH) Quasimonoenergetic photons obtained using M050400100014 Ni-58(n,g)Ni-59 g-quanta compton scattering. M050400100015 FACILITY (REAC,1CANCRC) NRU Chalk River reactor. M050400100016 SAMPLE The target materials coated on walls of cylindrical M050400100017 ion chambers. M050400100018 METHOD (PHD) Pulse-height discriminator. M050400100019 DETECTOR (IOCH) Ion chambers. M050400100020 (PROPC,BF3,D4PI) A Halpern-type 4pi neutron detector. M050400100021 The efficiency of this neutron detector was measured, M050400100022 at a mean neutron energy of 2.13 MeV, with a M050400100023 calibrated 252Cf source and at 0.26 MeV with a M050400100024 calibrated d(g,n)p source using the 2.75 MeV M050400100025 gamma-rays of 24Na. M050400100026 COMMENT Photofission cross sections of Th-232, U-238, and M050400100027 U-235 between 5 and 8.3 MeV have been measured with M050400100028 1.0 and 1.7 mg/cm**2 targets of thorium, natural M050400100029 uranium U-238 and enriched uranium U-235 coated on M050400100030 walls of cylindrical ion chambers. The beam of M050400100031 incident g-radiation of variable energy has a spread M050400100032 of 4 to 5 %. Pronounced peaks were observed in M050400100033 Th-232 at 6.4 MeV, 650 keV wide, and in U-238 at 6.2 M050400100034 MeV, 200 keV wide. No well-defined peaks were M050400100035 observed in the U-235 photofission cross section. M050400100036 HISTORY (19971015C) Data were compiled at the Russia MSU SINP M050400100037 CDFE by V.Varlamov. M050400100038 (20160218A) Corrected by V.Varlamov: dates, SAMPLE, M050400100039 STATUS, ERR-ANALYS, lowercase. M050400100040 (20190603A) Corrected by VV and OG: REFERENCE (2nd and M050400100041 3rd added, #NSR and #doi added), SUBENTs 005 - 008 M050400100042 added, ANALYSIS, ERR-ANALYS and COMMON moved from M050400100043 SUBENT 001 into SUBENTs 002-004. M050400100044 ENDBIB 42 0 M050400100045 NOCOMMON 0 0 M050400100046 ENDSUBENT 45 0 M050400199999 SUBENT M0504002 20190603 M100M050400200001 BIB 6 12 M050400200002 REACTION (92-U-235(G,F),,SIG) M050400200003 SAMPLE (92-U-235,ENR=0.89) M050400200004 ANALYSIS The direct fission fragment counting. M050400200005 ERR-ANALYS (ERR-S) Statistical errors are given. M050400200006 (ERR-1) The systematic uncertainty associated with M050400200007 the measurement of absolute beam intensity was M050400200008 estimated to be about 22 %. M050400200009 STATUS (CURVE) Data from Fig. 11. M050400200010 HISTORY (20160218A) Corrected by V.Varlamov: SAMPLE, STATUS, M050400200011 ERR-S. M050400200012 (20190603A) Corrected by VV and OG: ANALYSIS, M050400200013 ERR-ANALYS and COMMON. M050400200014 ENDBIB 12 0 M050400200015 COMMON 2 3 M050400200016 EN-RSL ERR-1 M050400200017 PER-CENT PER-CENT M050400200018 5. 22. M050400200019 ENDCOMMON 3 0 M050400200020 DATA 3 29 M050400200021 EN DATA ERR-S M050400200022 MEV MB MB M050400200023 5.05 .2 M050400200024 5.15 -0.3 M050400200025 5.25 .5 M050400200026 5.35 .2 M050400200027 5.45 -0.6 M050400200028 5.50 .5 M050400200029 5.6 .1 M050400200030 5.7 1.90 .50 M050400200031 5.85 2.90 .50 M050400200032 5.9 .06 .50 M050400200033 6.05 2.00 .50 M050400200034 6.15 -0.80 .50 M050400200035 6.25 3.40 .50 M050400200036 6.35 6.53 .75 M050400200037 6.45 8.10 .75 M050400200038 6.6 8.00 .75 M050400200039 6.7 10.00 .80 M050400200040 6.8 8.90 .80 M050400200041 6.9 6.30 .80 M050400200042 7. 12.00 1.00 M050400200043 7.1 11.70 1.00 M050400200044 7.25 10.01 1.00 M050400200045 7.35 16.00 1.00 M050400200046 7.45 19.00 1.00 M050400200047 7.55 18.90 1.00 M050400200048 7.65 20.05 1.25 M050400200049 7.75 18.00 1.35 M050400200050 7.85 27.20 1.25 M050400200051 7.95 20.02 1.65 M050400200052 ENDDATA 31 0 M050400200053 ENDSUBENT 52 0 M050400299999 SUBENT M0504003 20190603 M100M050400300001 BIB 6 12 M050400300002 REACTION (92-U-238(G,F),,SIG) M050400300003 SAMPLE (92-U-238,NAT=0.9927) M050400300004 ANALYSIS The direct fission fragment counting. M050400300005 ERR-ANALYS (ERR-S) Statistical errors are given. M050400300006 (ERR-1) The systematic uncertainty associated with M050400300007 the measurement of absolute beam intensity was M050400300008 estimated to be about 22 %. M050400300009 STATUS (CURVE) Data from Fig. 10. M050400300010 HISTORY (20160218A) Corrected by V.Varlamov: SAMPLE, STATUS, M050400300011 ERR-S. M050400300012 (20190603A) Corrected by VV and OG: ANALYSIS, M050400300013 ERR-ANALYS and COMMON. M050400300014 ENDBIB 12 0 M050400300015 COMMON 2 3 M050400300016 EN-RSL ERR-1 M050400300017 PER-CENT PER-CENT M050400300018 5. 22. M050400300019 ENDCOMMON 3 0 M050400300020 DATA 3 33 M050400300021 EN DATA ERR-S M050400300022 MEV MB MB M050400300023 5.03 .1 M050400300024 5.12 .2 M050400300025 5.21 .3 M050400300026 5.3 .1 M050400300027 5.4 .5 M050400300028 5.5 .6 M050400300029 5.6 1. M050400300030 5.7 1.95 M050400300031 5.8 1.95 M050400300032 5.92 2.6 M050400300033 6.1 4. M050400300034 6.15 6. M050400300035 6.22 6.2 M050400300036 6.35 4.50 .25 M050400300037 6.47 4.40 .25 M050400300038 6.55 4.25 .25 M050400300039 6.75 4.50 .25 M050400300040 6.8 5.50 .25 M050400300041 6.85 7.00 .25 M050400300042 7. 8.00 .25 M050400300043 7.1 8.96 .25 M050400300044 7.25 9.02 .25 M050400300045 7.32 9.02 .25 M050400300046 7.4 10.05 .25 M050400300047 7.52 12.00 .25 M050400300048 7.65 13.60 .25 M050400300049 7.72 16.00 .25 M050400300050 7.85 17.00 .37 M050400300051 7.95 16.75 .25 M050400300052 8.08 16.85 .37 M050400300053 8.13 15.42 .25 M050400300054 8.25 15.75 .37 M050400300055 8.39 13.50 .53 M050400300056 ENDDATA 35 0 M050400300057 ENDSUBENT 56 0 M050400399999 SUBENT M0504004 20190603 M100M050400400001 BIB 6 12 M050400400002 REACTION (90-TH-232(G,F),,SIG) M050400400003 SAMPLE (90-TH-232,NAT=1.0) M050400400004 ANALYSIS The direct fission fragment counting. M050400400005 ERR-ANALYS (ERR-S) Statistical errors are given. M050400400006 (ERR-1) The systematic uncertainty associated with M050400400007 the measurement of absolute beam intensity was M050400400008 estimated to be about 22 %. M050400400009 STATUS (CURVE) Data from Fig. 9. M050400400010 HISTORY (20160218A) Corrected by V.Varlamov: SAMPLE, STATUS, M050400400011 ERR-S. M050400400012 (20190603A) Corrected by VV and OG: ANALYSIS, M050400400013 ERR-ANALYS and COMMON. M050400400014 ENDBIB 12 0 M050400400015 COMMON 2 3 M050400400016 EN-RSL ERR-1 M050400400017 PER-CENT PER-CENT M050400400018 5. 22. M050400400019 ENDCOMMON 3 0 M050400400020 DATA 3 32 M050400400021 EN DATA ERR-S M050400400022 MEV MB MB M050400400023 5.18 .10 .35 M050400400024 5.23 .10 .35 M050400400025 5.32 .40 .25 M050400400026 5.4 -0.40 .25 M050400400027 5.5 .50 .25 M050400400028 5.61 .10 .25 M050400400029 5.7 .20 .35 M050400400030 5.8 1.00 .25 M050400400031 5.9 2.40 .25 M050400400032 6.05 4.50 .25 M050400400033 6.15 8.00 .25 M050400400034 6.28 9.00 .35 M050400400035 6.35 9.01 .40 M050400400036 6.45 9.65 .50 M050400400037 6.53 9.42 .50 M050400400038 6.68 8.50 .50 M050400400039 6.8 4.98 .50 M050400400040 6.9 2.00 .50 M050400400041 7. 4.25 .60 M050400400042 7.1 7.50 .70 M050400400043 7.25 7.50 .70 M050400400044 7.32 8.00 .70 M050400400045 7.5 5.50 .75 M050400400046 7.53 8.50 .75 M050400400047 7.7 9.00 .80 M050400400048 7.8 11.30 .98 M050400400049 7.9 9.80 1.00 M050400400050 7.95 12.82 1.00 M050400400051 8.08 16.89 1.00 M050400400052 8.2 14.12 1.00 M050400400053 8.25 14.25 1.00 M050400400054 8.38 17.38 1.00 M050400400055 ENDDATA 34 0 M050400400056 ENDSUBENT 55 0 M050400499999 SUBENT M0504005 20190603 M100M050400500001 BIB 6 10 M050400500002 REACTION (92-U-238(G,X)0-NN-1,,SIG) M050400500003 The sum: (g,n)+(g,fn) M050400500004 SAMPLE (92-U-238,NAT=0.9927) M050400500005 ANALYSIS The cross section was calibrated against the M050400500006 photofission cross section of 238U. M050400500007 ERR-ANALYS (DATA-ERR) No information. M050400500008 STATUS (CURVE) Data from Fig.1 of Conf.Phot.Reac. and M050400500009 Appl.,1,647,1973 were digitized by GSYS2.4.7. M050400500010 HISTORY (20190603C) Data were compiled at Ukrainian Nuclear M050400500011 Data Center (UkrNDC) by OG. M050400500012 ENDBIB 10 0 M050400500013 NOCOMMON 0 0 M050400500014 DATA 3 24 M050400500015 EN DATA DATA-ERR M050400500016 MEV MB MB M050400500017 5.5033 3.2603 3.0263 M050400500018 5.6018 2.6436 2.8831 M050400500019 5.7066 1.0194 2.2351 M050400500020 5.7959 1.3372 2.4524 M050400500021 5.9108 2.3124 2.0919 M050400500022 6.0122 23.6911 1.6602 M050400500023 6.1081 38.9384 2.1611 M050400500024 6.2114 34.5013 2.0919 M050400500025 6.3364 27.4032 2.0909 M050400500026 6.4409 26.3558 2.2342 M050400500027 6.5449 31.5821 1.8756 M050400500028 6.6437 35.8692 2.0188 M050400500029 6.7726 37.8585 2.2380 M050400500030 6.8850 49.0008 2.1640 M050400500031 7.0011 53.4378 2.1659 M050400500032 7.1104 48.6421 2.6687 M050400500033 7.2241 57.4051 2.8840 M050400500034 7.3420 52.8286 2.7417 M050400500035 7.4440 62.0204 4.3270 M050400500036 7.5496 64.2185 4.0405 M050400500037 7.6535 75.2858 3.7483 M050400500038 7.7666 85.3467 4.3991 M050400500039 7.8768 95.2623 4.9038 M050400500040 7.9740 86.0638 4.4019 M050400500041 ENDDATA 26 0 M050400500042 ENDSUBENT 41 0 M050400599999 SUBENT M0504006 20190603 M100M050400600001 BIB 6 12 M050400600002 REACTION (92-U-238(G,N)92-U-237,,SIG) M050400600003 SAMPLE (92-U-238,NAT=0.9927) M050400600004 ANALYSIS The cross section was obtained from SIGntot and SIGf M050400600005 assuming that the average number of neutrons per M050400600006 fission between5 and 8 MeV is 2.5. M050400600007 ERR-ANALYS (DATA-ERR) No information. M050400600008 STATUS (CURVE) Data from Fig.3 of Conf.Phot.Reac. and M050400600009 Appl.,1,647,1973 were digitized by GSYS2.4.7. M050400600010 (DEP,M0504005) M050400600011 (DEP,M0504003) M050400600012 HISTORY (20190603C) Data were compiled at Ukrainian Nuclear M050400600013 Data Center (UkrNDC) by OG. M050400600014 ENDBIB 12 0 M050400600015 NOCOMMON 0 0 M050400600016 DATA 3 23 M050400600017 EN DATA DATA-ERR M050400600018 MEV MB MB M050400600019 5.6219 -0.3062 0.8982 M050400600020 5.7095 -1.1772 1.0904 M050400600021 5.8092 -0.8908 1.0894 M050400600022 5.9024 -0.6063 1.0885 M050400600023 6.0199 14.3641 1.4720 M050400600024 6.1256 23.7544 1.6691 M050400600025 6.2290 19.1063 1.5390 M050400600026 6.3473 16.1292 2.8848 M050400600027 6.4638 15.4592 3.2042 M050400600028 6.5751 21.5822 2.4993 M050400600029 6.6692 25.0077 1.4730 M050400600030 6.7821 24.8494 2.2439 M050400600031 6.8803 31.3530 2.3090 M050400600032 7.0006 34.1455 2.4993 M050400600033 7.1121 27.3204 2.4381 M050400600034 7.2155 35.4921 2.6265 M050400600035 7.3260 30.0128 2.9489 M050400600036 7.4346 35.4299 2.9489 M050400600037 7.5450 34.3093 3.5907 M050400600038 7.6654 41.2683 2.8838 M050400600039 7.7654 45.4007 3.3334 M050400600040 7.8654 53.6996 3.7820 M050400600041 7.9630 44.0500 4.6801 M050400600042 ENDDATA 25 0 M050400600043 ENDSUBENT 42 0 M050400699999 SUBENT M0504007 20190603 M100M050400700001 BIB 6 12 M050400700002 REACTION (92-U-238(G,ABS),,SIG,,,DERIV) M050400700003 SAMPLE (92-U-238,NAT=0.9927) M050400700004 ANALYSIS The photoabsorption section constructed from SIGn, M050400700005 SIGg and SIGg (calculated by an iterative procedure M050400700006 from SIGa assuming level densities). M050400700007 ERR-ANALYS (DATA-ERR) No information. M050400700008 STATUS (CURVE) Data from Fig.4 of Conf.Phot.Reac. and M050400700009 Appl.,1,647,1973 were digitized by GSYS2.4.7. M050400700010 (DEP,M0504006) M050400700011 (DEP,M0504003) M050400700012 HISTORY (20190603C) Data were compiled at Ukrainian Nuclear M050400700013 Data Center (UkrNDC) by OG. M050400700014 ENDBIB 12 0 M050400700015 NOCOMMON 0 0 M050400700016 DATA 3 20 M050400700017 EN DATA DATA-ERR M050400700018 MEV MB MB M050400700019 5.9427 3.2383 1.4334 M050400700020 6.0178 12.1056 1.5155 M050400700021 6.1171 29.7431 2.1907 M050400700022 6.2349 25.2223 1.6019 M050400700023 6.3441 20.8679 2.1917 M050400700024 6.4554 19.8005 2.2771 M050400700025 6.5664 25.8960 2.6119 M050400700026 6.6709 28.7876 1.7705 M050400700027 6.7847 30.5018 1.7705 M050400700028 6.8855 39.1228 2.6973 M050400700029 6.9983 42.4378 3.0354 M050400700030 7.1170 36.4004 2.7805 M050400700031 7.2222 44.8540 2.7815 M050400700032 7.3290 37.6338 2.6130 M050400700033 7.4342 46.1716 3.3713 M050400700034 7.5403 46.5355 3.7937 M050400700035 7.6373 54.4814 2.4456 M050400700036 7.7392 61.5016 3.0321 M050400700037 7.8482 70.6302 3.4556 M050400700038 7.9567 60.7138 3.6241 M050400700039 ENDDATA 22 0 M050400700040 ENDSUBENT 39 0 M050400799999 SUBENT M0504008 20190603 M100M050400800001 BIB 4 9 M050400800002 REACTION (92-U-238(G,F),PR,NU) M050400800003 The value of nu(E) is derived from the ratio of M050400800004 fissioncounts to coincidences between the fission and M050400800005 neutrondetectors. M050400800006 ERR-ANALYS (DATA-ERR) No information. M050400800007 STATUS (TABLE) Data from the text of Progr. Rep. M050400800008 INDC(SEC)-62L,129,1977. M050400800009 HISTORY (20190603C) Data were compiled at Ukrainian Nuclear M050400800010 Data Center (UkrNDC) by OG. M050400800011 ENDBIB 9 0 M050400800012 NOCOMMON 0 0 M050400800013 DATA 4 1 M050400800014 EN EN-ERR DATA DATA-ERR M050400800015 MEV MEV PRT/FIS PRT/FIS M050400800016 8. 0.15 2.76 0.10 M050400800017 ENDDATA 3 0 M050400800018 ENDSUBENT 17 0 M050400899999 ENDENTRY 8 0 M050499999999