ENTRY 20823 20200925 22912082300000001 SUBENT 20823001 20200925 22912082300100001 BIB 10 33 2082300100002 TITLE Precision neutron total cross section measurements 2082300100003 on gold and cobalt in the 40micro-eV to 5 milli-eV 2082300100004 range 2082300100005 AUTHOR (W.Dilg,W.Mannhart,E.Steichele,P.Arnold) 2082300100006 REFERENCE (J,ZP,264,427,1973) 2082300100007 REL-REF (I,,E.Steichele+,J,PL/A,44,165,1973) - description of 2082300100008 high resolution TOF diffractrometer.2082300100009 INSTITUTE (2GERMUN) Garching. 2082300100010 FACILITY (REAC,2GERMUN) Three synchronized choppers, 2082300100011 consisting of Al cylinders (350mm diam., 160mm high) 2082300100012 with vertical axes, inner walls coated with 0.5mm Cd, 2082300100013 two vertical slits 30mm in width, driven by 2082300100014 synchronous motor with 200-8500 rpm. For measurements 2082300100015 between 0.03 and 0.4 milli-eV the duty cycle was 2082300100016 1050 rpm. 2082300100017 INC-SOURCE (REAC) Garching FMR. 2082300100018 Total flux at end of 150m flight tube - 2.5*10**6 2082300100019 neutrons/(cm**2, sec). 2082300100020 METHOD (TRN) 2082300100021 (TOF) Guide tube of 150m with x-sec. of 14cm*2.5cm 2082300100022 and radius of curvature of 35000m, coated with Ni 2082300100023 inside. 2082300100024 Energy calibration by Bragg cutoff breaks in 2082300100025 transmission on Pb, Si, Be, Fe and Mg. 2082300100026 Accuracy in calibration overall +-2*10-3 angstrom. 2082300100027 For the low energy part of the experiment the flight 2082300100028 path (vertical) was 10.96+-0.01m. 2082300100029 DETECTOR (BF3) 1 inch. diam. for integral flux monitor. 2082300100030 2 inch. diam., 20cm active length for neutron 2082300100031 HISTORY (19790208C) WWO. 2082300100032 (19790709A) PDJ. 2082300100033 (20200925U) SD:Updated to new date formats,lower case. 2082300100034 BIB updated. Corrections in all Subents. 2082300100035 ENDBIB 33 0 2082300100036 NOCOMMON 0 0 2082300100037 ENDSUBENT 36 0 2082300199999 SUBENT 20823002 20200925 22912082300200001 BIB 6 20 2082300200002 REACTION (79-AU-197(N,TOT),,SIG) 2082300200003 SAMPLE Two samples (chemical purity) 99.999% 0.88 and 1.00mm 2082300200004 thick. (5.1271 +- 0.0025)x10**(-3) and 2082300200005 (5.8505+-0.0012)x10**(-3) atoms/barn. 2082300200006 28mm actual and 20mm active diam. 2082300200007 CORRECTION Background and deadtime. 2082300200008 For vertical flight path deceleration due to gravity 2082300200009 (0.8%) and neutron refraction. 2082300200010 For absorption (0.2%). 2082300200011 For flux variation (0.5-1.%) 2082300200012 ERR-ANALYS (DATA-ERR) The error includes both statistics and 2082300200013 the uncertainty of the incoherence. 2082300200014 Additional errors due to: 2082300200015 (ERR-1) Uncertainty in the inelastic scattering and 2082300200016 Breit-Wigner correction are 0.03% 2082300200017 (ERR-2) Uncertainty in wavelength measurement (0.03%),2082300200018 (ERR-3) experimental uncertainties of sample thickness 2082300200019 STATUS (TABLE) Tbl.2 from Zeitschrift fuer Phys.,264(1973)427 2082300200020 HISTORY (20200925U) SD: DATA-ERR added from the Table. STATUS, 2082300200021 ERR-ANALYS updated. 2082300200022 ENDBIB 20 0 2082300200023 COMMON 3 3 2082300200024 ERR-1 ERR-2 ERR-3 2082300200025 PER-CENT PER-CENT PER-CENT 2082300200026 0.03 0.03 0.04 2082300200027 ENDCOMMON 3 0 2082300200028 DATA 3 21 2082300200029 EN DATA DATA-ERR 2082300200030 MILLI-EV B B 2082300200031 0.0399 2460. 19. 2082300200032 0.0471 2246. 13. 2082300200033 0.0564 2077. 11. 2082300200034 0.0688 1890.6 9.3 2082300200035 0.0856 1699.2 7.7 2082300200036 0.1094 1486.7 6.6 2082300200037 0.1445 1299.4 5.7 2082300200038 0.200 1104.4 5.0 2082300200039 0.294 907.8 4.1 2082300200040 0.473 716.7 3.3 2082300200041 1.454 408.5 1.2 2082300200042 1.669 382.7 0.7 2082300200043 1.936 355.1 0.6 2082300200044 2.272 326.5 0.4 2082300200045 2.608 304.9 0.3 2082300200046 2.858 291.7 0.4 2082300200047 3.025 283.5 0.4 2082300200048 3.145 278.4 0.4 2082300200049 3.272 272.6 0.5 2082300200050 3.407 267.3 0.6 2082300200051 3.550 261.3 0.9 2082300200052 ENDDATA 23 0 2082300200053 ENDSUBENT 52 0 2082300299999 SUBENT 20823003 20200925 22912082300300001 BIB 6 14 2082300300002 REACTION (79-AU-197(N,TOT),,SIG,,,DERIV) 2082300300003 ANALYSIS Interpolation through 1/v fitting 2082300300004 CORRECTION * For incoherent and inelastic scattering and 2082300300005 * for the slight deviation from 1/v of the absorption 2082300300006 of gold due to the 4.9 eV resonance level. 2082300300007 ERR-ANALYS (ERR-T) The quoted errors are calculated from the 2082300300008 quadratic sum of: 2082300300009 (ERR-S) the statistical uncertainty 0.17% 2082300300010 (ERR-1) the estimated errors of sample thickness 0.1% 2082300300011 (ERR-2) wavelength measurement 0.2% 2082300300012 STATUS (TABLE) Tbl.3 from Zeitschrift fuer Phys.,264(1973)427 2082300300013 HISTORY (19790219C) WWO. 2082300300014 (19860808A)HH EN-DUMMY to EN in common 2082300300015 (20200925U) SD: ERR-ANALYS, STATUS updated. 2082300300016 ENDBIB 14 0 2082300300017 NOCOMMON 0 0 2082300300018 DATA 6 1 2082300300019 EN DATA ERR-T ERR-S ERR-1 ERR-2 2082300300020 EV B B PER-CENT PER-CENT PER-CENT 2082300300021 2.5300E-02 98.68 0.12 0.17 0.1 0.2 2082300300022 ENDDATA 3 0 2082300300023 ENDSUBENT 22 0 2082300399999 SUBENT 20823004 20200925 22912082300400001 BIB 6 20 2082300400002 REACTION (27-CO-59(N,TOT),,SIG) 2082300400003 SAMPLE Sample was (15ppm chemical purity) 1.02mm thick. 2082300400004 (9.164+-0.005)x10**(-3) atoms/barn. 2082300400005 28mm actual and 20mm active diam. 2082300400006 For the low energy measurements the sample was 2082300400007 a 0.02 inch sheet, specially pure, with 2082300400008 (4.645+-0.003)x10**(-3) atoms/barn. 2082300400009 Alternately another one of 0.25mm thickness with 2082300400010 (1.5137+-0.0015)x10**(-3) atoms/barn was used. 2082300400011 CORRECTION The main correction, about 4%, is for spin-incoherent 2082300400012 scattering. Additionally: 2082300400013 For background and deadtime, deceleration due to 2082300400014 gravity in the vertical flight path experiment 2082300400015 (0.8%) and neutron refraction, uncertainty of 2082300400016 flight path (0.1%). 2082300400017 ERR-ANALYS (DATA-ERR) The error includes both statistics and 2082300400018 the uncertainty of the incoherence. 2082300400019 STATUS (TABLE) Tbl.2 from Zeitschrift fuer Phys.,264(1973)427 2082300400020 HISTORY (20200925A) SD: DATA-ERR added from the Table. STATUS, 2082300400021 ERR-ANALYS updated. 2082300400022 ENDBIB 20 0 2082300400023 NOCOMMON 0 0 2082300400024 DATA 3 15 2082300400025 EN DATA DATA-ERR 2082300400026 MILLI-EV B B 2082300400027 0.0399 945.6 7.7 2082300400028 0.0471 864.9 5.8 2082300400029 0.0564 788.2 5.0 2082300400030 0.0688 713.3 3.8 2082300400031 0.0856 647.0 3.1 2082300400032 0.1094 571.4 2.8 2082300400033 0.1445 496.5 2.1 2082300400034 0.200 423.7 2.0 2082300400035 0.294 352.5 1.8 2082300400036 0.473 280.4 2.0 2082300400037 1.454 160.8 1.2 2082300400038 1.669 151.3 0.7 2082300400039 1.936 141.4 0.7 2082300400040 2.272 129.5 0.5 2082300400041 2.608 120.7 0.6 2082300400042 ENDDATA 17 0 2082300400043 ENDSUBENT 42 0 2082300499999 SUBENT 20823005 20200925 22912082300500001 BIB 6 11 2082300500002 REACTION (27-CO-59(N,TOT),,SIG,,,DERIV) 2082300500003 ANALYSIS Interpolation through 1/v fitting 2082300500004 CORRECTION For incoherent and inelastic scattering 2082300500005 ERR-ANALYS (ERR-T) The quoted errors are calculated from the 2082300500006 quadratic sum of: 2082300500007 (ERR-S) the statistical uncertainty 2082300500008 (ERR-1) the estimated errors of sample thickness 2082300500009 STATUS (TABLE) Tbl.3 from Zeitschrift fuer Phys.,264(1973)427 2082300500010 HISTORY (19790219C) WWO. 2082300500011 (20200925U) SD: ERR-ANALYS, STATUS updated. 2082300500012 EN-DUMMY -> EN. 2082300500013 ENDBIB 11 0 2082300500014 NOCOMMON 0 0 2082300500015 DATA 5 1 2082300500016 EN DATA ERR-T ERR-S ERR-1 2082300500017 EV B B PER-CENT PER-CENT 2082300500018 2.53E-02 37.15 0.08 0.2 0.07 2082300500019 ENDDATA 3 0 2082300500020 ENDSUBENT 19 0 2082300599999 SUBENT 20823006 20200925 22912082300600001 BIB 5 10 2082300600002 REACTION (27-CO-59(N,TOT),,SIG) 2082300600003 COMMENT In the paper is one erratum - the quoted x-sec. At 2082300600004 1.25eV should be 11.7+-0.2 and not 10.7+-0.2b. 2082300600005 ERR-ANALYS (DATA-ERR) The error includes statistics and 2082300600006 the principal systematic uncertainty due to the 2082300600007 correction for incoherent scattering. 2082300600008 STATUS (TABLE) From text on p.440 of Zeitschrift fuer 2082300600009 Phys.,264(1973)427 2082300600010 HISTORY (19790219C) WWO. 2082300600011 (20200925U) SD: STATUS updated. ERR-T added. 2082300600012 ENDBIB 10 0 2082300600013 NOCOMMON 0 0 2082300600014 DATA 3 1 2082300600015 EN DATA DATA-ERR 2082300600016 EV B B 2082300600017 1.25 11.7 0.2 2082300600018 ENDDATA 3 0 2082300600019 ENDSUBENT 18 0 2082300699999 SUBENT 20823007 20200925 22912082300700001 BIB 5 12 2082300700002 REACTION (27-CO-59(N,G)27-CO-60,,SIG,,,DERIV) 2082300700003 ANALYSIS Derived from measured total cross section, corrected 2082300700004 for incoherent and inelastic scattering. 2082300700005 ERR-ANALYS (ERR-T) Uncertainty includes: 2082300700006 (ERR-S) statistical error 2082300700007 (ERR-1) systematic uncertainty of 0.2% 2082300700008 from incoherent scattering correction. 2082300700009 STATUS (NDD) Recompiled from NEUDADA. 2082300700010 (DEP,20823004) total cr.sect. 2082300700011 HISTORY (19790709C) PDJ 2082300700012 (20200925A) SD: SF9=DERIV added to REACTION code. 2082300700013 ERR-ANALYS, STATUS updated. 2082300700014 ENDBIB 12 0 2082300700015 COMMON 3 3 2082300700016 ERR-T ERR-S ERR-1 2082300700017 PER-CENT PER-CENT PER-CENT 2082300700018 0.42 0.22 0.2 2082300700019 ENDCOMMON 3 0 2082300700020 DATA 2 15 2082300700021 EN DATA 2082300700022 MILLI-EV B 2082300700023 0.0399 938.2 2082300700024 0.0471 857.6 2082300700025 0.0564 781.0 2082300700026 0.0688 706.4 2082300700027 0.0856 640.4 2082300700028 0.1094 564.8 2082300700029 0.1445 490.1 2082300700030 0.200 417.3 2082300700031 0.294 346.3 2082300700032 0.473 274.3 2082300700033 1.454 154.9 2082300700034 1.669 145.3 2082300700035 1.936 135.5 2082300700036 2.272 123.6 2082300700037 2.608 114.8 2082300700038 ENDDATA 17 0 2082300700039 ENDSUBENT 38 0 2082300799999 SUBENT 20823008 20200925 22912082300800001 BIB 5 10 2082300800002 REACTION (79-AU-197(N,G)79-AU-198,,SIG,,,DERIV) 2082300800003 ANALYSIS Derived from measured total cross section, corrected 2082300800004 for thermal inelastic and incoherent scattering. 2082300800005 ERR-ANALYS (DATA-ERR) Uncertainty includes statistics and 2082300800006 uncertainty in incoherent correction. 2082300800007 STATUS (NDD) Recompiled from NEUDADA. 2082300800008 (DEP,20823002) total cr.sect. 2082300800009 HISTORY (19790709C) PDJ 2082300800010 (19860808A)HH -g taken away from Au-198 2082300800011 (20200925U) SD: ERR-ANALYS, STATUS updated. 2082300800012 ENDBIB 10 0 2082300800013 COMMON 1 3 2082300800014 DATA-ERR 2082300800015 PER-CENT 2082300800016 0.42 2082300800017 ENDCOMMON 3 0 2082300800018 DATA 2 21 2082300800019 EN DATA 2082300800020 MILLI-EV B 2082300800021 0.0399 2458.2 2082300800022 0.0471 2244.3 2082300800023 0.0564 2075.3 2082300800024 0.0688 1889.0 2082300800025 0.0856 1697.8 2082300800026 0.1094 1485.4 2082300800027 0.1445 1298.2 2082300800028 0.200 1103.2 2082300800029 0.294 906.8 2082300800030 0.473 715.7 2082300800031 1.454 407.5 2082300800032 1.669 381.8 2082300800033 1.936 354.2 2082300800034 2.272 325.6 2082300800035 2.608 303.9 2082300800036 2.858 290.7 2082300800037 3.025 282.5 2082300800038 3.145 277.4 2082300800039 3.272 271.6 2082300800040 3.407 266.3 2082300800041 3.55 260.3 2082300800042 ENDDATA 23 0 2082300800043 ENDSUBENT 42 0 2082300899999 ENDENTRY 8 0 2082399999999