ENTRY 30650 20090830 31403065000000001 SUBENT 30650001 20090830 31403065000100001 BIB 10 30 3065000100002 INSTITUTE (3AULWAI,3AULAUA) 3065000100003 REFERENCE (J,AUJ,35,385,198208) 3065000100004 AUTHOR (J.R.de Laeter,K.J.R.Rosman,J.W.Boldeman) 3065000100005 TITLE Relative yields of stable tellurium isotopes in neutron3065000100006 induced fission 3065000100007 FACILITY (REAC,3AULAUA) Hifar reactor 3065000100008 INC-SPECT Thermal reactor spectrum. 3065000100009 Thermal neutron flux exceeds 1.x10**13 n/cm2/s (details3065000100010 for individual samples in subentries 2 and 3) 3065000100011 Fast neutron flux less than 4.x10**11 n/cm2/s 3065000100012 The fast neutron fission rate was less than 0.01% 3065000100013 of the thermal fission rate for all samples. 3065000100014 SAMPLE U3O8,purified as follows. Samples were first dissolved 3065000100015 in 6m HCl with a minimum of nitric acid, evaporated to 3065000100016 dryness and redissolved in 6 m HCl. In order to remove 3065000100017 any possible Te contamination, the solution was placed 3065000100018 on a small anion exchange column (dowex Ag1-x8), the 3065000100019 uranium eluted with 2m HCl and the eluant collected 3065000100020 directly into small, long-necked quartz vials. The 3065000100021 samples were slowly evaporated to dryness and the vials3065000100022 were then sealed under vacuum. 3065000100023 METHOD Chemical separation of tellurium from other species. 3065000100024 Mass-separation by a solid source mass spectrometer 3065000100025 with Re-filament (thermal ionization technique). 3065000100026 STATUS (APRVD) by J.R. de Laeter, letter of 9 jan. 1984 3065000100027 HISTORY (19830309C) ML. 3065000100028 (19840117A) 1 Data point corrected in subentry 003. 3065000100029 minor corrections in all subentries. 3065000100030 (19840429U) ML.Minor corrections,see memo 4C-1/142 3065000100031 (20090725A) SD:Updated to new date formats,lower case. 3065000100032 ENDBIB 30 0 3065000100033 COMMON 1 3 3065000100034 EN-DUMMY 3065000100035 EV 3065000100036 2.5300E-02 3065000100037 ENDCOMMON 3 0 3065000100038 ENDSUBENT 37 0 3065000199999 SUBENT 30650002 20090830 31403065000200001 BIB 7 20 3065000200002 REACTION 1(92-U-233(N,F)ELEM/MASS,CUM,FY,,REL/RAW/MXW) 3065000200003 2(92-U-233(N,F)ELEM/MASS,CUM,FY,,REL/RAW/MXW) 3065000200004 3(92-U-233(N,F)ELEM/MASS,CUM,FY,,REL/RAW/MXW) 3065000200005 SAMPLE Relevant data for the 3 samples are given below 3065000200006 Sample Weight Neutron flux Cooling time 3065000200007 (mg) (n/cm2/s) (days) 3065000200008 1 61(6) 9.5 2.46 e13 2010 3065000200009 2 62(7) 7.5 2.66 e13 858 3065000200010 3 63(10) 10.7 2.51 e13 872 3065000200011 The irradiation time was 28 days for all samples 3065000200012 COMMENT Uncorrected individual results for 3 samples, yields 3065000200013 are given relative to that of Te-130. 3065000200014 FLAG (1.)Since Sn-126 has a half-life of about 1.E5 years 3065000200015 its decay can be neglected. Therefore the 3065000200016 measured yield of Te-126 is practically the 3065000200017 sum of independent yields of Sb-126 and Te-126. 3065000200018 STATUS (TABLE) Data taken from Table 2 of first reference 3065000200019 CORRECTION The data are not corrected for mass discrimination and 3065000200020 decay. 3065000200021 ERR-ANALYS (DATA-ERR) Analytical error of measurement 3065000200022 ENDBIB 20 0 3065000200023 NOCOMMON 0 0 3065000200024 DATA 9 4 3065000200025 ELEMENT MASS DATA 1DATA-ERR 1DATA 2DATA-ERR 23065000200026 DATA 3ERR-S 3FLAG 3065000200027 NO-DIM NO-DIM ARB-UNITS ARB-UNITS ARB-UNITS ARB-UNITS 3065000200028 ARB-UNITS ARB-UNITS NO-DIM 3065000200029 5.2000E+01 1.2500E+02 3.1100E-02 6.0000E-04 3.0000E-02 8.0000E-043065000200030 3.1100E-02 5.0000E-04 3065000200031 5.2000E+01 1.2600E+02 3.9000E-03 3.0000E-04 4.1200E-03 5.0000E-043065000200032 3.9400E-03 2.0000E-04 1.0000E+00 3065000200033 5.2000E+01 1.2800E+02 4.4600E-01 3.0000E-03 4.4600E-01 6.0000E-033065000200034 4.4400E-01 2.0000E-03 3065000200035 5.2000E+01 1.3000E+02 1.0000E+00 1.0000E+00 3065000200036 1.0000E+00 3065000200037 ENDDATA 12 0 3065000200038 ENDSUBENT 37 0 3065000299999 SUBENT 30650003 20090830 31403065000300001 BIB 7 20 3065000300002 REACTION 1(92-U-235(N,F)ELEM/MASS,CUM,FY,,REL/RAW/MXW) 3065000300003 2(92-U-235(N,F)ELEM/MASS,CUM,FY,,REL/RAW/MXW) 3065000300004 3(92-U-235(N,F)ELEM/MASS,CUM,FY,,REL/RAW/MXW) 3065000300005 SAMPLE Relevant data for the 3 samples are given below 3065000300006 Sample Weight Neutron flux Cooling time 3065000300007 (mg) (n/cm2/s) (days) 3065000300008 1 58(1) 9.9 1.60 e13 2010 3065000300009 2 59(2) 3.1 2.28 e13 855 3065000300010 3 60(5) 5.7 1.80 e13 872 3065000300011 The irradiation time was 28 days for all samples 3065000300012 COMMENT Uncorrected individual results for 3 samples, yields 3065000300013 are given relative to that of Te-130. 3065000300014 FLAG (1.)Since Sn-126 has a half-life of about 1.E5 years, 3065000300015 its decay can be neglected. Therefore the 3065000300016 measured yield of Te-126 is practically the 3065000300017 sum of independent yields of Sb-126 and Te-126. 3065000300018 STATUS (TABLE) Data taken from Table 2 of first reference 3065000300019 CORRECTION The data are not corrected for mass discrimination and 3065000300020 decay. 3065000300021 ERR-ANALYS (DATA-ERR) Analytical error of measurement 3065000300022 ENDBIB 20 0 3065000300023 NOCOMMON 0 0 3065000300024 DATA 9 4 3065000300025 ELEMENT MASS DATA 1DATA-ERR 1DATA 2DATA-ERR 23065000300026 DATA 3ERR-S 3FLAG 3065000300027 NO-DIM NO-DIM ARB-UNITS ARB-UNITS ARB-UNITS ARB-UNITS 3065000300028 ARB-UNITS ARB-UNITS NO-DIM 3065000300029 5.2000E+01 1.2500E+02 1.2900E-02 1.0000E-04 8.2400E-03 1.7000E-043065000300030 8.5200E-03 1.1000E-04 3065000300031 5.2000E+01 1.2600E+02 8.6000E-04 1.6000E-04 5.9000E-04 4.5000E-043065000300032 1.0000E+00 3065000300033 5.2000E+01 1.2800E+02 1.8160E-01 1.1000E-03 1.8180E-01 1.2000E-033065000300034 1.8280E-01 9.0000E-04 3065000300035 5.2000E+01 1.3000E+02 1.0000E+00 1.0000E+00 3065000300036 1.0000E+00 3065000300037 ENDDATA 12 0 3065000300038 ENDSUBENT 37 0 3065000399999 SUBENT 30650004 20090830 31403065000400001 BIB 4 27 3065000400002 REACTION (92-U-233(N,F)ELEM/MASS,CUM,FY,,REL/MXW) 3065000400003 Yields relative to Te-130. 3065000400004 STATUS (TABLE) 3065000400005 (DEP,30650002) Weighted average of corrected data 3065000400006 the statistical error is taken from Table 2 of the 3065000400007 first reference, all other data from Table 3. 3065000400008 CORRECTION A mass discrimination of 0.625% per mass unit 3065000400009 was used to correct the data given in subentry 2, based3065000400010 on a value of 0.68% per mass unit determined 3065000400011 earlier for cadmium isotopes (see Rosman and de Laeter,3065000400012 Int.J.Mass Spectrom.Ion Phys. 16(1975)385). 3065000400013 The Te-125 data were corrected for radioactive trans- 3065000400014 formations in the mass 125 decay chain. No details are 3065000400015 given.Only a half-life of 2.7 years for Sb-125 is given3065000400016 in the text. 3065000400017 ERR-ANALYS (ERR-S) The statistical error of the weighted average 3065000400018 of the raw data,except for Te-125 where no 3065000400019 weighted average was taken, given as 2 sigma 3065000400020 (see compiler's note below) 3065000400021 (ERR-T) The total error,given as 2 sigma. It includes 3065000400022 the uncertainty in the estimated correction 3065000400023 factor for mass discrimination. 3065000400024 For Te-125 the uncertainty of the corrections 3065000400025 for the decay of precursors is also included, 3065000400026 but no details are given. 3065000400027 Compiler's note - The assumed 2 sigma nature of the 3065000400028 statistical error was confirmed by the author. 3065000400029 ENDBIB 27 0 3065000400030 COMMON 1 3 3065000400031 ELEMENT 3065000400032 NO-DIM 3065000400033 5.2000E+01 3065000400034 ENDCOMMON 3 0 3065000400035 DATA 4 3 3065000400036 MASS DATA ERR-S ERR-T 3065000400037 NO-DIM ARB-UNITS ARB-UNITS ARB-UNITS 3065000400038 1.2500E+02 6.8000E-02 4.0000E-03 3065000400039 1.2800E+02 4.3900E-01 2.0000E-03 3.0000E-03 3065000400040 1.3000E+02 1.0000E+00 3065000400041 ENDDATA 5 0 3065000400042 ENDSUBENT 41 0 3065000499999 SUBENT 30650005 20090830 31403065000500001 BIB 4 27 3065000500002 REACTION (92-U-235(N,F)ELEM/MASS,CUM,FY,,REL/MXW) 3065000500003 Yields relative to Te-130. 3065000500004 STATUS (TABLE) 3065000500005 (DEP,30650003) Weighted average of corected data 3065000500006 The statistical error is taken from Table 2 of the 3065000500007 first reference, all other data from Table 3. 3065000500008 CORRECTION A mass discrimination of 0.625% per mass unit 3065000500009 was used to correct the data given in subentry 3, based3065000500010 on a value of 0.68% per mass unit determined 3065000500011 earlier for cadmium isotopes (see Rosman and de Laeter,3065000500012 Int.J.Mass Spectrom.Ion Phys. 16(1975)385). 3065000500013 The Te-125 data were corrected for radioactive trans- 3065000500014 formations in the mass 125 decay chain. No details are 3065000500015 given.Only a half-life of 2.7 years for Sb-125 is given3065000500016 in the text. 3065000500017 ERR-ANALYS (ERR-S) The statistical error of the weighted average 3065000500018 of the raw data,except for Te-125 where no 3065000500019 weighted average was taken, given as 2 sigma 3065000500020 (see compiler's note below) 3065000500021 (ERR-T) The total error,given as 2 sigma. It includes 3065000500022 the uncertainty in the estimated correction 3065000500023 factor for mass discrimination. 3065000500024 For Te-125 the uncertainty of the corrections 3065000500025 for the decay of precursors is also included, 3065000500026 but no details are given. 3065000500027 Compiler's note - The assumed 2 sigma nature of the 3065000500028 statistical error was confirmed by the author. 3065000500029 ENDBIB 27 0 3065000500030 COMMON 1 3 3065000500031 ELEMENT 3065000500032 NO-DIM 3065000500033 5.2000E+01 3065000500034 ENDCOMMON 3 0 3065000500035 DATA 4 3 3065000500036 MASS DATA ERR-S ERR-T 3065000500037 NO-DIM ARB-UNITS ARB-UNITS ARB-UNITS 3065000500038 1.2500E+02 1.8000E-02 2.0000E-03 3065000500039 1.2800E+02 1.8000E-01 9.0000E-04 1.0000E-03 3065000500040 1.3000E+02 1.0000E+00 3065000500041 ENDDATA 5 0 3065000500042 ENDSUBENT 41 0 3065000599999 ENDENTRY 5 0 3065099999999