ENTRY 20221 20101107 22252022100000001 SUBENT 20221001 20101107 22252022100100001 BIB 11 34 2022100100002 INSTITUTE (2BLGMOL) 2022100100003 REFERENCE (J,NP/A,172,489,197109) 2022100100004 (W,Poortmans,1972) numerical values on fig.2 and fig.3 2022100100005 AUTHOR (F.Poortmans, I.Girlea, A.Fabry) 2022100100006 TITLE -Neutron cross sections for Eu-151 below 1 eV.- 2022100100007 FACILITY (SPECC,2BLGMOL) BR2 crystal spectrometer with Be(121),2022100100008 Pb(111) and Si(111) single crystals for neutron energy2022100100009 (0.10 to 0.60 eV), (0.02 to 0.20 eV) and 0.0253 eV 2022100100010 respectively. Filters of Ir, Sm and Cd were used. 2022100100011 INC-SOURCE (REAC) BR1 reactor. 2022100100012 INC-SPECT .Neutron resolution (dE/E) = 2022100100013 = 1.5 x 10**(-2) for 0.10-0.60eV(Be) 2022100100014 = 2.5 x 10**(-2) for 0.02-0.20eV(Pb) 2022100100015 see text for higher order contamination of neutrons. 2022100100016 SAMPLE .Eu-Al alloys, containing approximately 5% 2022100100017 by weight of natural Eu. 2022100100018 ANALYSIS .Thermal neutron temperature was deduced from the ratio2022100100019 of cross section for reaction Lu-176(n,g)Lu-171g 2022100100020 in this beam to the cross-section measured in the 2022100100021 thermal column of BR1 rector (T=300 K). T=313+-10 K. 2022100100022 .Westcott g-factor at T = 313 +- 10 K is 0.87 +- 0.02. 2022100100023 .Total cross section for Eu-151 is deduced by 2022100100024 subtraction of the contribution of Eu-153 from natural2022100100025 Eu total-cross-section. Eu-153 cross section was 2022100100026 supposed to follow an 1/V low (i.e. Sigma(Eu-153) * 2022100100027 (square root(E)) = 60.3 (barn-square root(eV)). 2022100100028 This counter has been developed by 2022100100029 R.Jacquemin of SCK/CEN Mol. 2022100100030 ASSUMED (ASSUM,63-EU-153(N,TOT),,SIG,,RTE) 2022100100031 HISTORY (19720203C) 2022100100032 (19740521E) 2022100100033 (20101107A) SD:Updated to new date formats,lower case, 2022100100034 corrected according to last EXFOR rules and Dict. 2022100100035 ASSUMED and COMMON added. 2022100100036 ENDBIB 34 0 2022100100037 COMMON 1 3 2022100100038 ASSUM 2022100100039 B*RT-EV 2022100100040 60.3 2022100100041 ENDCOMMON 3 0 2022100100042 ENDSUBENT 41 0 2022100199999 SUBENT 20221002 20101107 22252022100200001 BIB 5 10 2022100200002 REACTION (63-EU-0(N,TOT),,SIG) 2022100200003 METHOD (TRN) .Transmission experiment. 2022100200004 STATUS (TABLE) Data from Poortman's private communication, 2022100200005 02/02/1972. 2022100200006 HISTORY (19720203C) 2022100200007 (19740521E) 2022100200008 ERR-ANALYS (DATA-ERR) Precise evaluation for error on total cross 2022100200009 section has only be done for 0.0253 eV (1.3%). and 2022100200010 for other energies, upper limits for the errors 2022100200011 (2.5 to 20%) are given. 2022100200012 ENDBIB 10 0 2022100200013 NOCOMMON 0 0 2022100200014 DATA 3 126 2022100200015 EN DATA DATA-ERR 2022100200016 MEV B PER-CENT 2022100200017 2.2600E-08 4.9920E+03 2.5000E+00 2022100200018 2.3700E-08 4.7440E+03 2.5000E+00 2022100200019 2.5000E-08 4.7200E+03 2.5000E+00 2022100200020 2.5400E-08 4.5700E+03 2.5000E+00 2022100200021 2.6300E-08 4.3780E+03 2.5000E+00 2022100200022 2.7800E-08 4.2780E+03 2.5000E+00 2022100200023 2.9400E-08 4.0120E+03 2.5000E+00 2022100200024 3.1100E-08 3.7950E+03 2.5000E+00 2022100200025 3.3100E-08 3.5290E+03 2.5000E+00 2022100200026 3.5200E-08 3.4100E+03 2.5000E+00 2022100200027 3.7500E-08 3.1020E+03 2.5000E+00 2022100200028 4.0100E-08 2.9270E+03 2.5000E+00 2022100200029 4.2900E-08 2.7230E+03 2.5000E+00 2022100200030 4.6100E-08 2.5010E+03 2.5000E+00 2022100200031 4.9700E-08 2.2750E+03 2.5000E+00 2022100200032 5.3600E-08 2.0850E+03 2.5000E+00 2022100200033 5.8100E-08 1.8290E+03 2.5000E+00 2022100200034 6.3200E-08 1.6870E+03 2.5000E+00 2022100200035 6.9000E-08 1.5350E+03 2.5000E+00 2022100200036 7.5700E-08 1.4170E+03 2.5000E+00 2022100200037 9.2200E-08 1.1240E+03 2.5000E+00 2022100200038 1.0270E-07 1.0720E+03 2.5000E+00 2022100200039 1.0580E-07 9.7900E+02 2.5000E+00 2022100200040 1.1240E-07 9.3700E+02 2.5000E+00 2022100200041 1.1960E-07 9.7200E+02 2.5000E+00 2022100200042 1.2190E-07 9.1400E+02 2.5000E+00 2022100200043 1.2760E-07 8.5800E+02 2.5000E+00 2022100200044 1.3580E-07 8.7300E+02 2.5000E+00 2022100200045 1.3640E-07 8.5800E+02 2.5000E+00 2022100200046 1.4620E-07 8.4500E+02 2.5000E+00 2022100200047 1.4770E-07 8.4100E+02 2.5000E+00 2022100200048 1.5700E-07 8.1500E+02 2.5000E+00 2022100200049 1.6390E-07 8.2700E+02 2.5000E+00 2022100200050 1.6920E-07 8.5400E+02 2.5000E+00 2022100200051 1.8280E-07 8.4700E+02 2.5000E+00 2022100200052 1.8310E-07 8.0400E+02 2.5000E+00 2022100200053 1.9400E-07 8.4500E+02 2.5000E+00 2022100200054 1.9810E-07 8.9800E+02 2.5000E+00 2022100200055 2.0600E-07 9.3400E+02 2.5000E+00 2022100200056 2.1540E-07 1.0340E+03 2.5000E+00 2022100200057 2.1920E-07 1.0390E+03 2.5000E+00 2022100200058 2.3370E-07 1.1530E+03 2.5000E+00 2022100200059 2.3510E-07 1.1720E+03 2.5000E+00 2022100200060 2.4970E-07 1.3370E+03 2.5000E+00 2022100200061 2.5770E-07 1.3170E+03 1.5000E+00 2022100200062 2.6740E-07 1.6450E+03 1.5000E+00 2022100200063 2.7190E-07 1.6440E+03 1.5000E+00 2022100200064 2.7670E-07 1.7720E+03 1.5000E+00 2022100200065 2.8160E-07 1.9670E+03 1.5000E+00 2022100200066 2.9160E-07 2.2330E+03 1.5000E+00 2022100200067 2.9690E-07 2.4180E+03 1.5000E+00 2022100200068 3.0240E-07 2.6330E+03 1.5000E+00 2022100200069 3.0610E-07 2.7750E+03 1.5000E+00 2022100200070 3.0800E-07 2.8170E+03 1.5000E+00 2022100200071 3.0900E-07 2.8800E+03 1.5000E+00 2022100200072 3.1190E-07 2.9200E+03 1.5000E+00 2022100200073 3.1380E-07 3.0110E+03 1.5000E+00 2022100200074 3.1480E-07 2.9900E+03 1.5000E+00 2022100200075 3.1780E-07 3.1260E+03 1.5000E+00 2022100200076 3.1980E-07 3.0910E+03 1.5000E+00 2022100200077 3.2080E-07 3.1260E+03 1.5000E+00 2022100200078 3.2390E-07 3.1860E+03 1.5000E+00 2022100200079 3.2600E-07 3.1510E+03 1.5000E+00 2022100200080 3.2700E-07 3.2370E+03 1.5000E+00 2022100200081 3.2990E-07 3.2680E+03 1.5000E+00 2022100200082 3.3020E-07 3.2710E+03 1.5000E+00 2022100200083 3.3230E-07 3.2990E+03 1.5000E+00 2022100200084 3.3340E-07 3.2690E+03 1.5000E+00 2022100200085 3.3670E-07 3.3430E+03 1.5000E+00 2022100200086 3.3860E-07 3.2600E+03 1.5000E+00 2022100200087 3.3890E-07 3.3240E+03 1.5000E+00 2022100200088 3.4000E-07 3.3230E+03 1.5000E+00 2022100200089 3.4330E-07 3.3240E+03 1.5000E+00 2022100200090 3.4560E-07 3.3260E+03 1.5000E+00 2022100200091 3.4670E-07 3.3340E+03 1.5000E+00 2022100200092 3.5090E-07 3.3580E+03 1.5000E+00 2022100200093 3.5260E-07 3.3280E+03 1.5000E+00 2022100200094 3.5730E-07 3.1110E+03 1.5000E+00 2022100200095 3.5980E-07 3.2990E+03 1.5000E+00 2022100200096 3.6340E-07 3.2050E+03 1.5000E+00 2022100200097 3.6720E-07 3.4580E+03 1.5000E+00 2022100200098 3.6970E-07 3.4980E+03 1.5000E+00 2022100200099 3.7480E-07 3.6590E+03 1.5000E+00 2022100200100 3.7610E-07 3.5920E+03 1.5000E+00 2022100200101 3.8270E-07 3.7500E+03 1.5000E+00 2022100200102 3.8950E-07 4.2840E+03 1.5000E+00 2022100200103 3.9090E-07 4.2760E+03 1.5000E+00 2022100200104 3.9650E-07 4.8200E+03 1.5000E+00 2022100200105 4.0370E-07 5.3360E+03 1.5000E+00 2022100200106 4.1100E-07 6.0510E+03 1.5000E+00 2022100200107 4.1860E-07 7.0230E+03 1.5000E+00 2022100200108 4.2640E-07 8.1070E+03 1.5000E+00 2022100200109 4.3450E-07 9.1580E+03 1.5000E+00 2022100200110 4.4270E-07 1.0186E+04 1.5000E+00 2022100200111 4.4950E-07 1.0760E+04 1.5000E+00 2022100200112 4.5120E-07 1.0800E+04 1.5000E+00 2022100200113 4.5470E-07 1.0985E+04 1.5000E+00 2022100200114 4.6000E-07 1.0996E+04 1.5000E+00 2022100200115 4.6360E-07 1.0805E+04 1.5000E+00 2022100200116 4.6540E-07 1.0809E+04 1.5000E+00 2022100200117 4.6900E-07 1.0370E+04 1.5000E+00 2022100200118 4.7270E-07 1.0122E+04 1.5000E+00 2022100200119 4.7840E-07 9.5220E+03 1.5000E+00 2022100200120 4.8220E-07 9.0720E+03 1.5000E+00 2022100200121 4.9190E-07 7.5790E+03 1.5000E+00 2022100200122 5.0190E-07 6.0640E+03 3.0000E+00 2022100200123 5.1230E-07 4.9660E+03 3.0000E+00 2022100200124 5.2290E-07 4.1630E+03 3.0000E+00 2022100200125 5.2950E-07 3.4590E+03 3.0000E+00 2022100200126 5.3390E-07 3.0990E+03 3.0000E+00 2022100200127 5.4300E-07 2.7170E+03 3.0000E+00 2022100200128 5.5470E-07 2.1440E+03 5.0000E+00 2022100200129 5.6780E-07 1.6680E+03 5.0000E+00 2022100200130 5.7930E-07 1.3990E+03 5.0000E+00 2022100200131 5.9220E-07 1.1000E+03 5.0000E+00 2022100200132 6.0550E-07 9.6800E+02 1.0000E+01 2022100200133 6.1940E-07 8.4000E+02 1.0000E+01 2022100200134 6.3370E-07 6.7300E+02 1.0000E+01 2022100200135 6.4850E-07 5.6700E+02 1.0000E+01 2022100200136 6.6390E-07 5.6700E+02 2.0000E+01 2022100200137 6.7340E-07 3.4200E+02 2.0000E+01 2022100200138 6.8970E-07 3.5200E+02 2.0000E+01 2022100200139 7.0660E-07 2.9500E+02 2.0000E+01 2022100200140 7.2420E-07 3.0100E+02 2.0000E+01 2022100200141 7.3490E-07 2.7000E+02 2.0000E+01 2022100200142 7.5360E-07 3.4600E+02 2.0000E+01 2022100200143 ENDDATA 128 0 2022100200144 ENDSUBENT 143 0 2022100299999 SUBENT 20221003 20101107 22252022100300001 BIB 6 8 2022100300002 REACTION (63-EU-0(N,TOT),,SIG,,,DERIV) 2022100300003 METHOD (TRN) .Transmission experiment. 2022100300004 ANALYSIS .From interpolation of data in subentry .002. 2022100300005 STATUS (TABLE) Data from Tbl.2 of Nucl.Phys.A172(1971)489. 2022100300006 (DEP,20221002) 2022100300007 HISTORY (19720203C) 2022100300008 (19740521E) 2022100300009 ERR-ANALYS (DATA-ERR) Error (one standard deviation) is 1.3%. 2022100300010 ENDBIB 8 0 2022100300011 NOCOMMON 0 0 2022100300012 DATA 4 1 2022100300013 EN EN-RSL DATA DATA-ERR 2022100300014 MEV PER-CENT B B 2022100300015 2.5300E-08 1.2500E+00 4.5900E+03 7.0000E+01 2022100300016 ENDDATA 3 0 2022100300017 ENDSUBENT 16 0 2022100399999 SUBENT 20221004 20101107 22252022100400001 BIB 7 10 2022100400002 REACTION (63-EU-151(N,G)63-EU-152,,SIG) 2022100400003 ANALYSIS .Subtraction of Eu-153 cross section from Eu natural 2022100400004 total cross-section, and divided by abundance. 2022100400005 MONITOR .Absolute, see analysis. 2022100400006 STATUS (TABLE) Data from Tbl.2 of Nucl.Phys.A172(1971)489. 2022100400007 (DEP,20221003) 2022100400008 HISTORY (19720203C) 2022100400009 (19740521E) 2022100400010 CORRECTION .The scattering cross section can be neglected. 2022100400011 ERR-ANALYS (DATA-ERR) No details given. 2022100400012 ENDBIB 10 0 2022100400013 NOCOMMON 0 0 2022100400014 DATA 4 1 2022100400015 EN EN-RSL DATA DATA-ERR 2022100400016 MEV PER-CENT B B 2022100400017 2.5300E-08 1.2500E+00 9.1840E+03 1.4000E+02 2022100400018 ENDDATA 3 0 2022100400019 ENDSUBENT 18 0 2022100499999 SUBENT 20221005 20101107 22252022100500001 BIB 9 19 2022100500002 REACTION (63-EU-151(N,G)63-EU-152-M1,,SIG) 2022100500003 For formation of 9.3 hour Eu-152m. 2022100500004 METHOD (ACTIV) Activation. 2022100500005 DETECTOR (NAICR) 7.6 cm * 7.6 cm NaI crystal. 2022100500006 DECAY-DATA (63-EU-152-M1,9.3HR,B-) 2022100500007 MONITOR (79-AU-197(N,G)79-AU-198,,SIG) 2022100500008 FLAG (1.) Deduced from effective cross-section for 2022100500009 thermal neutron spectrum using Westcott 2022100500010 g-factor = 0.87+-0.02. 2022100500011 STATUS (TABLE) Data from Poortman's private communication, 2022100500012 02/02/1972. 2022100500013 HISTORY (19720203C) 2022100500014 (19740521E) 2022100500015 (19860808A)HH DECAY-DATA inserted 2022100500016 (19860822E) 2022100500017 (20101201A) SD: Col.HL deleted. Information is given 2022100500018 in DECAY-DATA 2022100500019 ERR-ANALYS (DATA-ERR) Errors include: 2022100500020 (ERR-1) 3% error on gamma-detector calibration. 2022100500021 ENDBIB 19 0 2022100500022 COMMON 4 3 2022100500023 EN-NRM MONIT MONIT-ERR ERR-1 2022100500024 EV B B PER-CENT 2022100500025 2.5300E-02 9.8800E+01 3.0000E-01 3.0 2022100500026 ENDCOMMON 3 0 2022100500027 DATA 4 9 2022100500028 EN DATA DATA-ERR FLAG 2022100500029 MEV B B NO-DIM 2022100500030 2.0740E-08 3.7160E+03 1.5000E+02 2022100500031 2.5300E-08 3.2360E+03 1.2000E+02 1.0000E+00 2022100500032 3.0000E-08 2.6940E+03 1.5000E+02 2022100500033 3.7200E-08 2.2500E+03 1.2000E+02 2022100500034 4.9300E-08 1.5220E+03 8.0000E+01 2022100500035 6.8700E-08 9.6100E+02 5.0000E+01 2022100500036 1.0320E-07 6.9100E+02 5.0000E+01 2022100500037 3.2100E-07 2.1340E+03 1.0000E+02 2022100500038 4.6000E-07 6.2100E+03 2.4000E+02 2022100500039 ENDDATA 11 0 2022100500040 ENDSUBENT 39 0 2022100599999 SUBENT 20221006 20101107 22252022100600001 BIB 11 15 2022100600002 REACTION (63-EU-151(N,G)63-EU-152-M1,,SIG,,MXW) 2022100600003 INC-SOURCE (THCOL) Thermal column of BR-1 reactor. 2022100600004 DECAY-DATA (63-EU-152-M1,9.3HR,B-) 2022100600005 INC-SPECT .Thermal neutron spectrum (T = 313 +- 10 deg.K). 2022100600006 METHOD (ACTIV) Activation. 2022100600007 DETECTOR (NAICR) 7.6 cm * 7.6 cm NaI crystal. 2022100600008 MONITOR (79-AU-197(N,G)79-AU-198,,SIG) 2022100600009 PART-DET (DG ) Decay gammas. 2022100600010 STATUS (TABLE) Data from Tbl.2 of Nucl.Phys.A172(1971)489. 2022100600011 HISTORY (19720203C) 2022100600012 (19740521E) 2022100600013 (20101201A) SD: Col.HL deleted. Information is given 2022100600014 in DECAY-DATA 2022100600015 ERR-ANALYS (DATA-ERR) Errors include: 2022100600016 (ERR-1) 3% error on gamma-detector calibration. 2022100600017 ENDBIB 15 0 2022100600018 NOCOMMON 0 0 2022100600019 DATA 4 1 2022100600020 EN-DUMMY DATA DATA-ERR ERR-1 2022100600021 MEV B B PER-CENT 2022100600022 2.5300E-08 2.8090E+03 1.2000E+02 3. 2022100600023 ENDDATA 3 0 2022100600024 ENDSUBENT 23 0 2022100699999 SUBENT 20221007 20101107 22252022100700001 BIB 8 13 2022100700002 REACTION (63-EU-151(N,G)63-EU-152-M1/T,,SIG/RAT,,RES) 2022100700003 Isomeric ratio at resonance. 2022100700004 METHOD (ACTIV) Activation. 2022100700005 DECAY-DATA (63-EU-152-M1,9.3HR,B-) 2022100700006 DETECTOR (NAICR) 7.6 cm * 7.6 cm NaI crystal. 2022100700007 PART-DET (DG ) Decay gammas. 2022100700008 STATUS (TABLE) Data from Tbl.2 of Nucl.Phys.A172(1971)489. 2022100700009 HISTORY (19720203C) 2022100700010 (19740521E) 2022100700011 (20101201A) SD: Col.HL deleted. Information is given 2022100700012 in DECAY-DATA 2022100700013 ERR-ANALYS (DATA-ERR) Quoted errors include 2022100700014 (ERR-1) 3% error on calibration of gamma detector. 2022100700015 ENDBIB 13 0 2022100700016 COMMON 2 3 2022100700017 SPIN J ERR-1 2022100700018 NO-DIM PER-CENT 2022100700019 3.0000E+00 3.0 2022100700020 ENDCOMMON 3 0 2022100700021 DATA 3 3 2022100700022 EN-RES DATA DATA-ERR 2022100700023 MEV NO-DIM NO-DIM 2022100700024 -3.6100E-09 3.6000E-01 2.0000E-02 2022100700025 3.2100E-07 3.8000E-01 3.5000E-02 2022100700026 4.6000E-07 2.7000E-01 1.2000E-02 2022100700027 ENDDATA 5 0 2022100700028 ENDSUBENT 27 0 2022100799999 SUBENT 20221008 20101107 22252022100800001 BIB 6 10 2022100800002 REACTION (63-EU-151(N,TOT),,WID) 2022100800003 ANALYSIS (SLA ) Breit-Wigner-type single level analysis. 2022100800004 STATUS (TABLE) Data from Tbl.2 of Nucl.Phys.A172(1971)489. 2022100800005 HISTORY (19720203C) 2022100800006 (19740521E) 2022100800007 CORRECTION .Contributions of 0.321 eV and 0.460 eV resonances have2022100800008 been subtracted from total cross section. 2022100800009 .Scattering cross section can be neglected. 2022100800010 ERR-ANALYS (ERR-S) Statistical errors resulting from 2022100800011 Least-Squares fit.2022100800012 ENDBIB 10 0 2022100800013 NOCOMMON 0 0 2022100800014 DATA 4 1 2022100800015 EN-RES EN-RES-ERR DATA ERR-S 2022100800016 EV EV MILLI-EV MILLI-EV 2022100800017 -3.6100E-03 2.0000E-05 9.5800E+01 1.0000E-02 2022100800018 ENDDATA 3 0 2022100800019 ENDSUBENT 18 0 2022100899999 SUBENT 20221009 20101107 22252022100900001 BIB 6 10 2022100900002 REACTION (63-EU-151(N,TOT),,SIG,,RES/RTE) 2022100900003 ANALYSIS (SLA ) Breit-Wigner-type single level analysis. 2022100900004 STATUS (TABLE) Data from Tbl.2 of Nucl.Phys.A172(1971)489. 2022100900005 HISTORY (19720203C) 2022100900006 (19740521E) 2022100900007 CORRECTION .Contributions of 0.321 eV and 0.460 eV resonances have2022100900008 been subtracted from total cross section. 2022100900009 .Scattering cross section can Be neglected. 2022100900010 ERR-ANALYS (ERR-S) Statistical errors resulting from 2022100900011 Least-Squares fit. 2022100900012 ENDBIB 10 0 2022100900013 NOCOMMON 0 0 2022100900014 DATA 4 1 2022100900015 EN-RES EN-RES-ERR DATA ERR-S 2022100900016 EV EV B*RT-EV B*RT-EV 2022100900017 -3.6100E-03 2.0000E-05 1.6960E+03 7.0000E+01 2022100900018 ENDDATA 3 0 2022100900019 ENDSUBENT 18 0 2022100999999 ENDENTRY 9 0 2022199999999