ENTRY 21005 20120812 22322100500000001 SUBENT 21005001 20120812 22322100500100001 BIB 16 65 2100500100002 INSTITUTE (2GERKFK) Institut fuer Angewandte Kernphysik. 2100500100003 REFERENCE (J,NP/A,141,602,1970) Data. 2100500100004 (R,KFK-1165,1970) Identical with Nucl.Phys. A141. 2100500100005 AUTHOR (D.Kompe,A.Ernst,F.H.Froehner) 2100500100006 TITLE Neutron capture cross sections of cerium and 2100500100007 thallium in the keV region 2100500100008 FACILITY (VDG,2GERKFK) 3MV, 10 ns pulse width. 2100500100009 INC-SPECT .Data calculated for Maxwellian flux with various 2100500100010 temperatures. 2100500100011 SAMPLE .Metallic discs of 8.6cm diam., containing 163g of 2100500100012 natural Ce with a purity of 99.9% and 128g of 2100500100013 natural Tl with a purity of 99.999% resp.. 2100500100014 .The thickness was - 2100500100015 1.207*10-2 nuclei/b for Ce, 2100500100016 0.650*10-2 nuclei/b for Tl. 2100500100017 METHOD (TOF) 1.5m flight path. 2100500100018 DETECTOR (STANK) 800 litr. liquid scintillator tank, surrounding2100500100019 the sample in 4Pi. 2100500100020 ANALYSIS .From the cross sections the Maxwellian averages were 2100500100021 determined, using statistical theory. 2100500100022 MONITOR (79-AU-197(N,G)79-AU-198,,SIG) 2100500100023 Reference cross section is the (n,gamma) cross section 2100500100024 of gold as measured by Kompe (Nucl.Phys.133,513 and 2100500100025 J.Nucl.Energy 22,505) against 10B(n,alpha+gamma) and 2100500100026 6Li(n,alpha), normalized to the absolute cross section 2100500100027 596. +- 30. mb recommended by Poenitz (Nucl.Instr., 2100500100028 58,39). See MONIT-REF 2100500100029 MONIT-REF (20358035,D.Kompe,J,NP/A,133,513,1969) 2100500100030 (21848002,W.P.Poenitz+,J,JNE,22,505,1968) 2100500100031 (,W.P.Poenitz+,J,NIM,58,39,1968) 2100500100032 CORRECTION .For - 2100500100033 selfshielding, 2100500100034 multiple scattering. 2100500100035 ERR-ANALYS (ERR-T) Total error. 2100500100036 The following systematic errors are considered 2100500100037 (ERR-1,8.,13.) error in the monitor cross section 2100500100038 8-13%. 2100500100039 (ERR-2) Uncertainty in probability for interaction 2100500100040 of at least one photon in the scintillator, 3% 2100500100041 (ERR-3) uncertainty in probability that a detector 2100500100042 signal from a capture event exceeds the discriminator 2100500100043 threshold, 6% 2100500100044 (ERR-4) finite sample effects 2100500100045 (ERR-5,,5.) extrapolation uncertainties for the 2100500100046 Maxwellian averages, 33.3% of the contribution from 2100500100047 this extrapolation, which is smaller than 5%, except 2100500100048 at the lowest energies. 2100500100049 (ERR-S) Statistical uncertainty is listed for three 2100500100050 representative energies 2100500100051 STATUS (TABLE) .Data taken from KFK-report. same data in 2100500100052 Nucl.Phys. A141,602 2100500100053 HISTORY (19790716C) WWO. 2100500100054 (19790827E) 2100500100055 (19800103A) INC-SPECT changed to SPA. 2100500100056 (19800115E) 2100500100057 (19801118A) G.C., Error analysis changed, MONITOR 2100500100058 reaction string corrected 2100500100059 (19801218E) 2100500100060 (20120812A) SD: Updated to new date formats,lower case.2100500100061 Corrected according last EXFOR rules and Dict. 2100500100062 ERR-1, ERR-2 were deleted from COMMON, range of 2100500100063 errors were added to ERR-ANALYS. ERR-S was added. 2100500100064 MONIT was added to COMMON. SF8=SPA was changed to 2100500100065 MXW in REACTION code in Subents 2,3. 2100500100066 EN-DUMMY changed to kT in DATA section in Subents 2,3.2100500100067 ENDBIB 65 0 2100500100068 COMMON 6 3 2100500100069 EN-NRM MONIT MONIT-ERR ERR-2 ERR-3 ERR-4 2100500100070 KEV MB MB PER-CENT PER-CENT PER-CENT 2100500100071 30. 596. 30. 3. 6. 3. 2100500100072 ENDCOMMON 3 0 2100500100073 ENDSUBENT 72 0 2100500199999 SUBENT 21005002 20120812 22322100500200001 BIB 2 6 2100500200002 REACTION (58-CE-0(N,G),,SIG,,MXW,DERIV) 2100500200003 HISTORY (19801118A) G.C., Error analysis transferred to main 2100500200004 section, data headings changed 2100500200005 (19801218E) 2100500200006 (20120812A) SD: SF8=SPA was changed to MXW in RACTION 2100500200007 code. Col. ERR-S was added to DATA; EN-DUMMY -> kT. 2100500200008 ENDBIB 6 0 2100500200009 NOCOMMON 0 0 2100500200010 DATA 4 14 2100500200011 KT DATA ERR-T ERR-S 2100500200012 KEV MB MB PER-CENT 2100500200013 1.0000E+01 4.1000E+01 1.0000E+01 2100500200014 1.5000E+01 3.1000E+01 6.0000E+00 2100500200015 2.0000E+01 2.6000E+01 5.0000E+00 11. 2100500200016 2.5000E+01 2.2000E+01 3.0000E+00 2100500200017 3.0000E+01 1.9900E+01 3.2000E+00 2100500200018 3.5000E+01 1.8100E+01 3.0000E+00 2100500200019 4.0000E+01 1.6600E+01 2.5000E+00 2100500200020 4.5000E+01 1.5500E+01 2.0000E+00 2100500200021 5.0000E+01 1.4500E+01 1.6000E+00 7. 2100500200022 6.0000E+01 1.3100E+01 1.5000E+00 2100500200023 7.0000E+01 1.1900E+01 1.4000E+00 2100500200024 8.0000E+01 1.1000E+01 1.3000E+00 2100500200025 9.0000E+01 1.0200E+01 1.2000E+00 2100500200026 1.0000E+02 9.6000E+00 1.2000E+00 5. 2100500200027 ENDDATA 16 0 2100500200028 ENDSUBENT 27 0 2100500299999 SUBENT 21005003 20120812 22322100500300001 BIB 2 6 2100500300002 REACTION (81-TL-0(N,G),,SIG,,MXW,DERIV) 2100500300003 HISTORY (19801118A) G.C., Error analysis transferred to main 2100500300004 section, data headings changed 2100500300005 (19801218E) 2100500300006 (20120812A) SD: SF8=SPA was changed to MXW in RACTION 2100500300007 code. Col. ERR-S was added to DATA; EN-DUMMY -> kT. 2100500300008 ENDBIB 6 0 2100500300009 NOCOMMON 0 0 2100500300010 DATA 4 14 2100500300011 KT DATA ERR-T ERR-S 2100500300012 KEV MB MB PER-CENT 2100500300013 1.0000E+01 1.8500E+02 4.0000E+01 2100500300014 1.5000E+01 1.3500E+02 3.0000E+01 2100500300015 2.0000E+01 1.1100E+02 2.0000E+01 8. 2100500300016 2.5000E+01 9.4000E+01 1.1000E+01 2100500300017 3.0000E+01 8.3000E+01 9.0000E+00 2100500300018 3.5000E+01 7.4000E+01 8.0000E+00 2100500300019 4.0000E+01 6.8000E+01 7.0000E+00 2100500300020 4.5000E+01 6.3000E+01 6.0000E+00 2100500300021 5.0000E+01 5.9000E+01 6.0000E+00 5. 2100500300022 6.0000E+01 5.3000E+01 5.0000E+00 2100500300023 7.0000E+01 4.8000E+01 5.0000E+00 2100500300024 8.0000E+01 4.4000E+01 4.0000E+00 2100500300025 9.0000E+01 4.1000E+01 4.0000E+00 2100500300026 1.0000E+02 3.8000E+01 4.0000E+00 4. 2100500300027 ENDDATA 16 0 2100500300028 ENDSUBENT 27 0 2100500399999 ENDENTRY 3 0 2100599999999