ENTRY 21179 20160920 22522117900000001 SUBENT 21179001 20160920 22522117900100001 BIB 14 34 2117900100002 INSTITUTE (2UK HAR) 2117900100003 REFERENCE (J,JNE,1,92,195408) 2117900100004 (R,AERE-NP/R-2104,1,1957) 2117900100005 AUTHOR (P.A.Egelstaff) 2117900100006 TITLE The neutron absorption cross-sections of U-238 and 2117900100007 U-235 at 2200 m/sec 2117900100008 FACILITY (CHOPS,2UK HAR) Slow chopper. 2117900100009 INC-SOURCE (THCOL) Thermal column of the BEPO reactor. 2117900100010 SAMPLE Two samples used were a plate of natural uranium and 2117900100011 a sample highly enriched in U-235. 2117900100012 REL-REF (I,,P.A.Egelstaff,J,JNE,1,57,195408) Details of 2117900100013 experimental method. 2117900100014 METHOD (TOF) Time-of-flight. 2117900100015 (TRN) Absorption cross sections were determined by 2117900100016 transmission measurements using Harwell slow chopper. 2117900100017 DETECTOR (BF3) BF-3 counter. 2117900100018 EXP-YEAR (1951) 2117900100019 CORRECTION Correction to results to allow for the U-234 content 2117900100020 of samples before determination of U-235 and U-238 2117900100021 cross sections. 2117900100022 ERR-ANALYS (DATA-ERR) No information about source of errors 2117900100023 HISTORY (19791113C) 2117900100024 (19800110E) 2117900100025 (20031115A) Date is corrected 2117900100026 (20041110A) SAN 21179006 converted from SUBENT 603950072117900100027 (20051116A) Corrected SM after N.Otsuka comments 2117900100028 One SUBENT .007 added 2117900100029 (20051121U) Last checking has been done. 2117900100030 (20080130U) M.M. BIB information was added. 2117900100031 SUBENT .008 was added from 21036.005. 2117900100032 SUBENT .003 data were deleted as duplicated data of 2117900100033 SUBENT .007. 2117900100034 (20160920A) SD: Subent 009 was added. Second ref. moved2117900100035 to REL-REF. STATUS update in Subent 006. 2117900100036 ENDBIB 34 0 2117900100037 NOCOMMON 0 0 2117900100038 ENDSUBENT 37 0 2117900199999 SUBENT 21179002 20080130 21932117900200001 BIB 5 12 2117900200002 REACTION (92-U-235(N,ABS),,SIG,,,DERIV) 2117900200003 ANALYSIS From previously measured total cross-section after 2117900200004 subtraction of scattering cross-section, assumed to 2117900200005 be the same as for natural uranium (SUBENT .007). 2117900200006 ASSUMED (ASSUM,92-U-235(N,TOT),,SIG) Taken as 729+-15 b from 2117900200007 JNE,1,57,1954 - 2nd reference. See SUBENT .006 . 2117900200008 STATUS (NDD) From NEUDADA. 2117900200009 Text of 1st reference, p.92 2117900200010 (DEP,21179007) 2117900200011 (DEP,21179006) 2117900200012 HISTORY (20051116A) Reaction code corrected 2117900200013 (20051121U) Last checking has been done. 2117900200014 ENDBIB 12 0 2117900200015 COMMON 1 3 2117900200016 EN 2117900200017 EV 2117900200018 2.53E-02 2117900200019 ENDCOMMON 3 0 2117900200020 DATA 4 1 2117900200021 DATA DATA-ERR ASSUM ASSUM-ERR 2117900200022 B B B B 2117900200023 7.2E+02 1.5E+01 7.29E+02 1.5E+01 2117900200024 ENDDATA 3 0 2117900200025 ENDSUBENT 24 0 2117900299999 SUBENT 21179003 20080130 21932117900300001 BIB 4 9 2117900300002 REACTION (92-U-0(N,THS)92-U-0,BA,SIG) 2117900300003 ANALYSIS From slope of total cross-section versus time-of- 2117900300004 flight curve. 2117900300005 Influence of effect of bound atoms is 2117900300006 essential in the energy field below 0.0253 eV. 2117900300007 STATUS (NDD) From NEUDADA and text of main reference 2117900300008 (SPSDD,21179007) SUBENT .003 data were deleted as 2117900300009 duplicated by SUBENT .007 . 2117900300010 HISTORY (20080130A) Data were deleted. 2117900300011 ENDBIB 9 0 2117900300012 NOCOMMON 0 0 2117900300013 NODATA 0 0 2117900300014 ENDSUBENT 13 0 2117900399999 SUBENT 21179004 20080130 21932117900400001 BIB 3 7 2117900400002 REACTION (92-U-0(N,THS)92-U-0,COH,SIG) 2117900400003 ANALYSIS Coherent cross section was determined from the Bragg 2117900400004 cut-off (5.9Angstrom = 2.3E-3 eV, major step in c-s 2117900400005 occurs at 4.95 to 5.13 Angstrom due to reflections from2117900400006 002, 021, 110 planes ) due to these planes. 2117900400007 STATUS (NDD) From NEUDADA. 2117900400008 Text of 1st reference, p.92 . 2117900400009 ENDBIB 7 0 2117900400010 COMMON 1 3 2117900400011 EN 2117900400012 EV 2117900400013 2.53E-02 2117900400014 ENDCOMMON 3 0 2117900400015 DATA 2 1 2117900400016 DATA DATA-ERR 2117900400017 B B 2117900400018 9. 1. 2117900400019 ENDDATA 3 0 2117900400020 ENDSUBENT 19 0 2117900499999 SUBENT 21179005 20080130 21932117900500001 BIB 3 6 2117900500002 REACTION (92-U-238(N,ABS),,SIG) 2117900500003 ANALYSIS From comparison of the total cross-section of the two 2117900500004 samples at low neutron energies (< 2.3 millieV) 2117900500005 assuming that the absorption cross-section varies as 2117900500006 1/v. 2117900500007 STATUS (NDD) From NEUDADA and text of main reference P.92 . 2117900500008 ENDBIB 6 0 2117900500009 COMMON 1 3 2117900500010 EN 2117900500011 EV 2117900500012 2.53E-02 2117900500013 ENDCOMMON 3 0 2117900500014 DATA 2 1 2117900500015 DATA DATA-ERR 2117900500016 B B 2117900500017 2.8 1.E-01 2117900500018 ENDDATA 3 0 2117900500019 ENDSUBENT 18 0 2117900599999 SUBENT 21179006 20160920 22522117900600001 BIB 3 8 2117900600002 REACTION (92-U-235(N,TOT),,SIG) 2117900600003 STATUS (TABLE) Value from p.92 of JNE,1,92,1954 2117900600004 (SPSDD,21179009) Data were superseded by 21179009. 2117900600005 HISTORY (19991210T) Converted from Subent 60395007 2117900600006 (20051116A) Corrections have been done - REACTION 2117900600007 code from (n,gamma) to (n,tot) and data value to 729 b.2117900600008 (20051121U) Last checking has been done. 2117900600009 (20160920U) SD: STATUS 'SPSDD' was added. 2117900600010 ENDBIB 8 0 2117900600011 COMMON 1 3 2117900600012 EN 2117900600013 EV 2117900600014 2.53E-02 2117900600015 ENDCOMMON 3 0 2117900600016 DATA 2 1 2117900600017 DATA DATA-ERR 2117900600018 B B 2117900600019 729. 15. 2117900600020 ENDDATA 3 0 2117900600021 ENDSUBENT 20 0 2117900699999 SUBENT 21179007 20080130 21932117900700001 BIB 4 6 2117900700002 REACTION (92-U-0(N,EL)92-U-0,,SIG,,,DERIV) 2117900700003 ANALYSIS From slope of total cross-section versus time-of- 2117900700004 flight curve. 2117900700005 STATUS From the text of main reference, p.92. 2117900700006 (DEP,21179008) 2117900700007 HISTORY (20051121C) SM 2117900700008 ENDBIB 6 0 2117900700009 COMMON 1 3 2117900700010 EN 2117900700011 EV 2117900700012 2.53E-02 2117900700013 ENDCOMMON 3 0 2117900700014 DATA 2 1 2117900700015 DATA DATA-ERR 2117900700016 B B 2117900700017 8.6 3.E-01 2117900700018 ENDDATA 3 0 2117900700019 ENDSUBENT 18 0 2117900799999 SUBENT 21179008 20080130 21932117900800001 BIB 3 8 2117900800002 REACTION (92-U-0(N,TOT),,SIG) 2117900800003 STATUS (NDD) From NEUDADA, original data from Egelstaff, 2117900800004 December 1954. 2117900800005 HISTORY (19790713C) 2117900800006 (19790831E) 2117900800007 (19830411A) Neutron energies in DATA table corrected. 2117900800008 (19830429E) 2117900800009 (20080125A) SUBENT was moved from SUBENT 21036.005 2117900800010 ENDBIB 8 0 2117900800011 NOCOMMON 0 0 2117900800012 DATA 3 103 2117900800013 EN DATA DATA-ERR 2117900800014 MEV B B 2117900800015 1.0100E-09 4.0300E+01 1.2000E+00 2117900800016 1.0600E-09 3.9700E+01 1.0000E+00 2117900800017 1.1200E-09 3.8800E+01 1.0000E+00 2117900800018 1.1800E-09 3.8900E+01 9.0000E-01 2117900800019 1.2400E-09 3.7900E+01 8.0000E-01 2117900800020 1.3500E-09 3.6200E+01 1.0000E+00 2117900800021 1.4400E-09 3.5100E+01 9.0000E-01 2117900800022 1.5100E-09 3.4600E+01 1.0000E+00 2117900800023 1.5200E-09 3.4100E+01 8.0000E-01 2117900800024 1.6200E-09 3.3000E+01 8.0000E-01 2117900800025 1.6900E-09 3.1800E+01 9.0000E-01 2117900800026 1.7200E-09 3.0800E+01 7.0000E-01 2117900800027 1.9000E-09 2.8600E+01 8.0000E-01 2117900800028 1.9100E-09 2.8900E+01 9.0000E-01 2117900800029 2.0400E-09 3.0200E+01 8.0000E-01 2117900800030 2.1500E-09 2.8800E+01 7.0000E-01 2117900800031 2.1900E-09 2.9000E+01 7.0000E-01 2117900800032 2.3500E-09 2.8300E+01 6.0000E-01 2117900800033 2.4700E-09 2.6400E+01 7.0000E-01 2117900800034 2.5200E-09 2.5400E+01 1.0000E+00 2117900800035 2.5300E-09 2.6100E+01 6.0000E-01 2117900800036 2.6200E-09 2.5600E+01 9.0000E-01 2117900800037 2.7400E-09 2.4400E+01 8.0000E-01 2117900800038 2.8500E-09 2.5100E+01 8.0000E-01 2117900800039 2.8600E-09 2.4800E+01 6.0000E-01 2117900800040 2.9500E-09 2.4100E+01 7.0000E-01 2117900800041 2.9700E-09 2.5000E+01 7.0000E-01 2117900800042 3.0700E-09 2.5000E+01 7.0000E-01 2117900800043 3.1000E-09 2.3800E+01 7.0000E-01 2117900800044 3.2100E-09 3.0600E+01 6.0000E-01 2117900800045 3.4100E-09 3.0200E+01 6.0000E-01 2117900800046 3.5800E-09 3.0200E+01 6.0000E-01 2117900800047 3.7500E-09 2.8600E+01 6.0000E-01 2117900800048 3.8600E-09 2.8900E+01 6.0000E-01 2117900800049 4.0300E-09 2.8500E+01 6.0000E-01 2117900800050 4.2400E-09 2.8000E+01 6.0000E-01 2117900800051 4.4600E-09 2.9700E+01 6.0000E-01 2117900800052 4.7100E-09 2.8300E+01 6.0000E-01 2117900800053 4.9700E-09 2.8100E+01 6.0000E-01 2117900800054 5.1000E-09 2.5800E+01 6.0000E-01 2117900800055 5.4000E-09 2.3600E+01 6.0000E-01 2117900800056 6.0700E-09 2.2900E+01 6.0000E-01 2117900800057 6.4500E-09 2.2200E+01 6.0000E-01 2117900800058 6.8700E-09 2.1400E+01 6.0000E-01 2117900800059 7.1100E-09 2.1000E+01 6.0000E-01 2117900800060 7.5900E-09 2.0900E+01 6.0000E-01 2117900800061 8.1200E-09 1.9400E+01 6.0000E-01 2117900800062 8.7200E-09 1.9800E+01 6.0000E-01 2117900800063 9.3900E-09 1.9100E+01 6.0000E-01 2117900800064 1.0000E-08 2.0000E+01 6.0000E-01 2117900800065 1.0300E-08 2.0100E+01 6.0000E-01 2117900800066 1.0700E-08 2.1200E+01 6.0000E-01 2117900800067 1.1000E-08 1.9300E+01 6.0000E-01 2117900800068 1.1400E-08 1.9600E+01 6.0000E-01 2117900800069 1.1800E-08 1.9100E+01 6.0000E-01 2117900800070 1.1900E-08 1.8300E+01 6.0000E-01 2117900800071 1.2400E-08 1.9400E+01 6.0000E-01 2117900800072 1.2800E-08 1.8500E+01 6.0000E-01 2117900800073 1.3200E-08 1.9400E+01 6.0000E-01 2117900800074 1.3700E-08 1.9100E+01 6.0000E-01 2117900800075 1.4200E-08 1.9100E+01 6.0000E-01 2117900800076 1.5900E-08 1.8300E+01 2.0000E-01 2117900800077 1.6400E-08 1.8300E+01 2.0000E-01 2117900800078 1.7200E-08 1.8400E+01 2.0000E-01 2117900800079 1.8000E-08 1.8100E+01 2.0000E-01 2117900800080 1.8500E-08 1.7800E+01 2.0000E-01 2117900800081 1.8800E-08 1.7400E+01 2.0000E-01 2117900800082 1.9300E-08 1.7200E+01 2.0000E-01 2117900800083 1.9600E-08 1.7000E+01 2.0000E-01 2117900800084 2.0400E-08 1.6900E+01 2.0000E-01 2117900800085 2.1300E-08 1.6900E+01 2.0000E-01 2117900800086 2.2500E-08 1.6700E+01 2.0000E-01 2117900800087 2.3400E-08 1.6400E+01 2.0000E-01 2117900800088 2.4000E-08 1.6500E+01 2.0000E-01 2117900800089 2.5300E-08 1.6100E+01 2.0000E-01 2117900800090 2.6600E-08 1.5800E+01 2.0000E-01 2117900800091 2.7900E-08 1.5600E+01 2.0000E-01 2117900800092 2.9300E-08 1.5300E+01 2.0000E-01 2117900800093 3.2000E-08 1.5200E+01 2.0000E-01 2117900800094 3.3900E-08 1.4900E+01 2.0000E-01 2117900800095 3.8000E-08 1.4500E+01 2.0000E-01 2117900800096 4.0300E-08 1.4200E+01 2.0000E-01 2117900800097 4.2900E-08 1.4100E+01 2.0000E-01 2117900800098 4.4700E-08 1.4000E+01 2.0000E-01 2117900800099 4.7700E-08 1.3700E+01 2.0000E-01 2117900800100 5.1100E-08 1.3700E+01 2.0000E-01 2117900800101 5.4800E-08 1.3600E+01 2.0000E-01 2117900800102 5.9000E-08 1.3400E+01 2.0000E-01 2117900800103 6.3500E-08 1.2900E+01 2.0000E-01 2117900800104 6.4800E-08 1.3500E+01 2.0000E-01 2117900800105 6.8100E-08 1.3100E+01 2.0000E-01 2117900800106 7.0200E-08 1.3200E+01 2.0000E-01 2117900800107 7.2900E-08 1.3000E+01 2.0000E-01 2117900800108 7.6200E-08 1.2800E+01 2.0000E-01 2117900800109 7.9500E-08 1.2900E+01 2.0000E-01 2117900800110 8.5800E-08 1.2800E+01 2.0000E-01 2117900800111 8.9400E-08 1.2800E+01 2.0000E-01 2117900800112 9.3900E-08 1.2500E+01 2.0000E-01 2117900800113 9.8800E-08 1.2600E+01 2.0000E-01 2117900800114 1.0500E-07 1.2500E+01 2.0000E-01 2117900800115 1.1000E-07 1.2300E+01 2.0000E-01 2117900800116 1.1300E-07 1.2600E+01 2.0000E-01 2117900800117 1.2100E-07 1.2300E+01 2.0000E-01 2117900800118 ENDDATA 105 0 2117900800119 ENDSUBENT 118 0 2117900899999 SUBENT 21179009 20160920 22522117900900001 BIB 3 3 2117900900002 REACTION (92-U-235(N,TOT),,SIG) 2117900900003 STATUS (TABLE) Value from p.1 of AERE-NP/R-2104,1,1957 2117900900004 HISTORY (20160920C) SD 2117900900005 ENDBIB 3 0 2117900900006 COMMON 1 3 2117900900007 EN 2117900900008 EV 2117900900009 2.53E-02 2117900900010 ENDCOMMON 3 0 2117900900011 DATA 2 1 2117900900012 DATA DATA-ERR 2117900900013 B B 2117900900014 724. 15. 2117900900015 ENDDATA 3 0 2117900900016 ENDSUBENT 15 0 2117900999999 ENDENTRY 9 0 2117999999999