ENTRY 23397 20190502 22812339700000001 SUBENT 23397001 20190502 22812339700100001 BIB 15 41 2339700100002 TITLE Measurements of uranium nuclide capture cross section 2339700100003 and total collision cross section 2339700100004 AUTHOR (K.Hanatani) 2339700100005 INSTITUTE (2JPNKTO) 2339700100006 REFERENCE (T,HANATANI,19450911) 2339700100007 Thesis submitted to Kyoto Imperial University 2339700100008 INC-SOURCE (RA-BE) 50 mg Ra+Be in a cylindrical case filled by 2339700100009 paraffin (20 cm diam.). 2339700100010 INC-SPECT Fraction of thermalized neutrons is about 90%. 2339700100011 Epithermal neutrons were removed by Cd foil. 2339700100012 SAMPLE U3O8 (1762 g) and Pb (2000 g) in an iron case (0.5 mm 2339700100013 thick). 529 cm2. 2339700100014 DETECTOR (IOCH) BCl3 gas (848 cm3) for detection of thermal 2339700100015 neutrons at 70 cm from the front of the neutron 2339700100016 source case 2339700100017 METHOD (TRN) Transmissions were measured for U3O8 and Pb 2339700100018 samples irradiated at two locations - 2339700100019 (1) 30 cm upstream side from the ionization chamber, 2339700100020 (2) just before the ionization chamber. 2339700100021 ANALYSIS Measured effective total cross section at samle 2339700100022 position 1 (sig1) and 2 (sig2) were related with the 2339700100023 capture cross section (sigc) and scattering cross 2339700100024 section (sigs) as follows: 2339700100025 sig1(U3O8)=sigc(U3O8)+k1*sigs(U3O8), 2339700100026 sig2(U3O8)=sigc(U3O8)+k2*sigs(U3O8), 2339700100027 sig1(Pb)=k*k1*sigs(Pb), 2339700100028 sig2(Pb)=k*k2*sigs(Pb), 2339700100029 with k=k1=1 assumed according to the the experimental 2339700100030 geometrical condition (sigc(Pb)~0 assumed). 2339700100031 From these equations, sigc(U3O8), sigs(U3O8), sigs(Pb)2339700100032 as well as k2 were determined. 2339700100033 ASSUMED (ASSUM1,8-O-16(N,G)8-O-17,,SIG) 2339700100034 (ASSUM2,8-O-16(N,TOT),,SIG) 2339700100035 REL-REF (R,,M.Kikuchi,J,JMJ,18,188,1936) 2339700100036 Oxygen capture cross section 2339700100037 (R,12634009,J.R.Dunning+,J,PR,48,265,1935) 2339700100038 Oxygen total cross section 2339700100039 ERR-ANALYS (DATA-ERR) No information on the source of uncertainty 2339700100040 STATUS (TABLE) Table in the thesis 2339700100041 HISTORY (20180815C) On 2339700100042 (20190502A) On. Major revisions in 002-005. 2339700100043 ENDBIB 41 0 2339700100044 COMMON 2 3 2339700100045 ASSUM1 ASSUM2 2339700100046 B B 2339700100047 0.1 3.3 2339700100048 ENDCOMMON 3 0 2339700100049 ENDSUBENT 48 0 2339700199999 SUBENT 23397002 20190502 22812339700200001 BIB 2 2 2339700200002 REACTION (92-U-0(N,EL)92-U-0,,SIG,,SPA) 2339700200003 HISTORY (20190502A) On. MEV -> EV 2339700200004 ENDBIB 2 0 2339700200005 NOCOMMON 0 0 2339700200006 DATA 3 1 2339700200007 EN-DUMMY DATA DATA-ERR 2339700200008 EV B B 2339700200009 0.0253 18.5 2.1 2339700200010 ENDDATA 3 0 2339700200011 ENDSUBENT 10 0 2339700299999 SUBENT 23397003 20190502 22812339700300001 BIB 2 2 2339700300002 REACTION (92-U-0(N,G),,SIG,,SPA) 2339700300003 HISTORY (20190502A) On. MEV -> EV 2339700300004 ENDBIB 2 0 2339700300005 NOCOMMON 0 0 2339700300006 DATA 3 1 2339700300007 EN-DUMMY DATA DATA-ERR 2339700300008 EV B B 2339700300009 0.0253 4.0 2.1 2339700300010 ENDDATA 3 0 2339700300011 ENDSUBENT 10 0 2339700399999 SUBENT 23397004 20190502 22812339700400001 BIB 2 2 2339700400002 REACTION (92-U-0(N,TOT),,SIG,,SPA) 2339700400003 HISTORY (20190502A) On. MEV -> EV 2339700400004 ENDBIB 2 0 2339700400005 NOCOMMON 0 0 2339700400006 DATA 3 1 2339700400007 EN-DUMMY DATA DATA-ERR 2339700400008 EV B B 2339700400009 0.0253 22.5 0.5 2339700400010 ENDDATA 3 0 2339700400011 ENDSUBENT 10 0 2339700499999 SUBENT 23397005 20190502 22812339700500001 BIB 2 2 2339700500002 REACTION (82-PB-0(N,TOT),,SIG,,SPA) 2339700500003 HISTORY (20190502A) On. MEV -> EV 2339700500004 ENDBIB 2 0 2339700500005 NOCOMMON 0 0 2339700500006 DATA 3 1 2339700500007 EN-DUMMY DATA DATA-ERR 2339700500008 EV B B 2339700500009 0.0253 11.4 0.2 2339700500010 ENDDATA 3 0 2339700500011 ENDSUBENT 10 0 2339700599999 ENDENTRY 5 0 2339799999999