ENTRY 41377 20200901 418941377 0 1 SUBENT 41377001 20200901 418941377 1 1 BIB 12 36 41377 1 2 TITLE Study of delayed neutrons decay curves for 235U and 41377 1 3 239Pu fission due to thermal neutrons . 41377 1 4 AUTHOR (S.B.Borzakov, Yu.S.Zamyatnin, Ts.Panteleev, 41377 1 5 S.S.Pavlov, I.Ruskov) 41377 1 6 INSTITUTE (4ZZZDUB) 41377 1 7 REFERENCE (J,YK,,(2),5,1999) Main Reference 41377 1 8 (R,INDC(CCP)-426,7,2001) 41377 1 9 Engl.transl. of J,YK,1999,(2),5,1999 . 41377 1 10 (J,PNE,41,125,2002) 41377 1 11 FACILITY (REAC,4ZZZDUB) Pulse fast reactor IBR-2 at average 41377 1 12 power 2 MWt, pulse frequency 5 Hz, pulse power 41377 1 13 1350 MWt 41377 1 14 INC-SOURCE (THCOL) Curved mirror neutron guide being part of 41377 1 15 'Isomer' device including thermal neutron's 41377 1 16 cutter and detectors placed in a moderator 41377 1 17 INC-SPECT Thermal spectrum of moderated neutrons 41377 1 18 DETECTOR (TELES,PROPC,PROPC) Battery of 12 He-3 counters 41377 1 19 METHOD Periodic irradiation of the sample with an irradiation 41377 1 20 frequency of 1.25 Hz, which was achieved by reducing 41377 1 21 the rotation frequency of the chopper. 41377 1 22 The data were accumulated over 40 hours for 235U and 41377 1 23 86 hours for 239Pu. 41377 1 24 CORRECTION Background was determined by measurements with a Cd 41377 1 25 filter in the beam, amounted to no more than 1% of the 41377 1 26 total neutron count. 41377 1 27 ERR-ANALYS (ERR-S,0.3,0.4) Statistical error 41377 1 28 HISTORY (20000629C) + + Compiled at the Centre - CJD + + 41377 1 29 (20000629U) Last checking has been done. 41377 1 30 (20131115A) Ref. R,INDC(CCP)-426,7,2001 . 41377 1 31 BIB information was updated. 41377 1 32 PART/FIS -> PRT/FIS 41377 1 33 GRP code was deleted from REACTION SF5 in Subents 41377 1 34 002-003. 41377 1 35 (20190325A) Subents 002,003 were corrected. 41377 1 36 Minor correction in STATUS. 41377 1 37 (20200901A) Ref. J,PNE,41,125,2002 was added. 41377 1 38 ENDBIB 36 0 41377 1 39 COMMON 1 3 41377 1 40 EN-DUMMY 41377 1 41 EV 41377 1 42 2.53E-02 41377 1 43 ENDCOMMON 3 0 41377 1 44 ENDSUBENT 43 0 41377 199999 SUBENT 41377002 20200901 418941377 2 1 BIB 5 40 41377 2 2 REACTION (92-U-235(N,F)ELEM/MASS,DL/CUM,NU,,MXW) 41377 2 3 SAMPLE Metallic sample of 7 gram weight. 41377 2 4 DECAY-DATA ((1.)33-AS-85,2.02SEC) 41377 2 5 ((2.)33-AS-86,0.95SEC) 41377 2 6 ((3.)33-AS-87,0.49SEC) 41377 2 7 ((4.)34-SE-89,0.41SEC) 41377 2 8 ((5.)35-BR-87,55.6SEC) 41377 2 9 ((6.)35-BR-88,16.23SEC) 41377 2 10 ((7.)35-BR-89,4.37SEC) 41377 2 11 ((8.)35-BR-90,1.91SEC) 41377 2 12 ((9.)35-BR-91,0.542SEC) 41377 2 13 ((10.)35-BR-92,0.31SEC) 41377 2 14 ((11.)36-KR-93,1.29SEC) 41377 2 15 ((12.)36-KR-94,0.22SEC) 41377 2 16 ((13.)37-RB-93,5.91SEC) 41377 2 17 ((14.)37-RB-94,2.73SEC) 41377 2 18 ((15.)37-RB-95,0.379SEC) 41377 2 19 ((16.)37-RB-96,0.199SEC) 41377 2 20 ((17.)37-RB-97,0.169SEC) 41377 2 21 ((18.)39-Y-98-G,0.549SEC) 41377 2 22 ((19.)39-Y-98-M,2.05SEC) 41377 2 23 ((20.)39-Y-99,1.48SEC) 41377 2 24 ((21.)39-Y-100,0.73SEC) 41377 2 25 ((22.)39-Y-101,0.38SEC) 41377 2 26 ((23.)39-Y-102,0.3SEC) 41377 2 27 ((24.)51-SB-135,1.7SEC) 41377 2 28 ((25.)52-TE-136,17.7SEC) 41377 2 29 ((26.)52-TE-137,2.5SEC) 41377 2 30 ((27.)53-I-137,24.5SEC) 41377 2 31 ((28.)53-I-138,6.27SEC) 41377 2 32 ((29.)53-I-139,2.29SEC) 41377 2 33 ((30.)53-I-140,0.61SEC) 41377 2 34 ((31.)53-I-141,0.47SEC) 41377 2 35 ((32.)55-CS-143,1.79SEC) 41377 2 36 ((33.)55-CS-144,0.99SEC) 41377 2 37 ((34.)55-CS-145,0.586SEC) 41377 2 38 STATUS (TABLE) From Table 1 of J.Yad.Konst.,is.2,5,1999 41377 2 39 Table 1 of J.Progress in Nuclear Energy,v.41,p.125,200241377 2 40 HISTORY (20190325A) CUM was added in SF5. 41377 2 41 DECAY-FLAG, ISOMER were introduced instead of HL 41377 2 42 ENDBIB 40 0 41377 2 43 NOCOMMON 0 0 41377 2 44 DATA 5 34 41377 2 45 ELEMENT MASS ISOMER DATA DECAY-FLAG 41377 2 46 NO-DIM NO-DIM NO-DIM PRT/FIS NO-DIM 41377 2 47 33. 85. 0.103E-02 1. 41377 2 48 33. 86. 0.013E-02 2. 41377 2 49 33. 87. 0.007E-02 3. 41377 2 50 34. 89. 0.007E-02 4. 41377 2 51 35. 87. 0.054E-02 5. 41377 2 52 35. 88. 0.119E-02 6. 41377 2 53 35. 89. 0.176E-02 7. 41377 2 54 35. 90. 0.131E-02 8. 41377 2 55 35. 91. 0.034E-02 9. 41377 2 56 35. 92. 0.008E-02 10. 41377 2 57 36. 93. 0.01E-02 11. 41377 2 58 36. 94. 0.006E-02 12. 41377 2 59 37. 93. 0.046E-02 13. 41377 2 60 37. 94. 0.162E-02 14. 41377 2 61 37. 95. 0.06E-02 15. 41377 2 62 37. 96. 0.02E-02 16. 41377 2 63 37. 97. 0.009E-02 17. 41377 2 64 39. 98. 0. 0.01E-02 18. 41377 2 65 39. 98. 1. 0.105E-02 19. 41377 2 66 39. 99. 0.041E-02 20. 41377 2 67 39. 100. 0.005E-02 21. 41377 2 68 39. 101. 0.007E-02 22. 41377 2 69 39. 102. 0.008E-02 23. 41377 2 70 51. 135. 0.025E-02 24. 41377 2 71 52. 136. 0.015E-02 25. 41377 2 72 52. 137. 0.014E-02 26. 41377 2 73 53. 137. 0.233E-02 27. 41377 2 74 53. 138. 0.087E-02 28. 41377 2 75 53. 139. 0.059E-02 29. 41377 2 76 53. 140. 0.015E-02 30. 41377 2 77 53. 141. 0.008E-02 31. 41377 2 78 55. 143. 0.024E-02 32. 41377 2 79 55. 144. 0.014E-02 33. 41377 2 80 55. 145. 0.013E-02 34. 41377 2 81 ENDDATA 36 0 41377 2 82 ENDSUBENT 81 0 41377 299999 SUBENT 41377003 20200901 418941377 3 1 BIB 5 34 41377 3 2 REACTION (94-PU-239(N,F)ELEM/MASS,DL/CUM,NU,,MXW) 41377 3 3 SAMPLE Metallic sample 10 gram weight 41377 3 4 DECAY-DATA ((1.)33-AS-85,2.02SEC) 41377 3 5 ((2.)35-BR-89,4.37SEC) 41377 3 6 ((3.)35-BR-87,55.6SEC) 41377 3 7 ((4.)35-BR-88,16.23SEC) 41377 3 8 ((5.)35-BR-90,1.91SEC) 41377 3 9 ((6.)35-BR-91,0.542SEC) 41377 3 10 ((7.)37-RB-93,5.91SEC) 41377 3 11 ((8.)37-RB-94,2.73SEC) 41377 3 12 ((9.)37-RB-95,0.379SEC) 41377 3 13 ((10.)37-RB-96,0.199SEC) 41377 3 14 ((11.)37-RB-97,0.169SEC) 41377 3 15 ((12.)39-Y-98-G,0.549SEC) 41377 3 16 ((13.)39-Y-98-M,2.05SEC) 41377 3 17 ((14.)39-Y-99,1.48SEC) 41377 3 18 ((15.)39-Y-100,0.73SEC) 41377 3 19 ((16.)39-Y-101,0.38SEC) 41377 3 20 ((17.)41-NB-105,2.95SEC) 41377 3 21 ((18.)51-SB-135,1.7SEC) 41377 3 22 ((19.)52-TE-136,17.7SEC) 41377 3 23 ((20.)53-I-137,24.5SEC) 41377 3 24 ((21.)53-I-138,6.27SEC) 41377 3 25 ((22.)53-I-139,2.29SEC) 41377 3 26 ((23.)53-I-140,0.61SEC) 41377 3 27 ((24.)55-CS-143,1.79SEC) 41377 3 28 ((25.)55-CS-144,0.99SEC) 41377 3 29 ((26.)55-CS-145,0.586SEC) 41377 3 30 STATUS (TABLE) From Table 2 of J.Yad.Konst.,is.2,5,1999 41377 3 31 Table 2 of J.Progress in Nuclear Energy,v.41,p.125,200241377 3 32 HISTORY (20190325A) CUM was added in SF5. 41377 3 33 DECAY-FLAG, ISOMER were introduced instead of HL 41377 3 34 Br-82 -> Br-89 in data block ( misprint in YK Table 2,41377 3 35 see half-life and Table 1, group 4). 41377 3 36 ENDBIB 34 0 41377 3 37 NOCOMMON 0 0 41377 3 38 DATA 5 26 41377 3 39 ELEMENT MASS ISOMER DATA DECAY-FLAG 41377 3 40 NO-DIM NO-DIM NO-DIM PRT/FIS NO-DIM 41377 3 41 33. 85. 0.0165E-02 1. 41377 3 42 35. 87. 0.017E-02 3. 41377 3 43 35. 88. 0.034E-02 4. 41377 3 44 35. 89. 0.043E-02 2. 41377 3 45 35. 90. 0.0333E-02 5. 41377 3 46 35. 91. 0.0046E-02 6. 41377 3 47 37. 93. 0.019E-02 7. 41377 3 48 37. 94. 0.0635E-02 8. 41377 3 49 37. 95. 0.031E-02 9. 41377 3 50 37. 96. 0.007E-02 10. 41377 3 51 37. 97. 0.0215E-03 11. 41377 3 52 39. 98. 0. 0.0085E-02 12. 41377 3 53 39. 98. 1. 0.044E-02 13. 41377 3 54 39. 99. 0.027E-02 14. 41377 3 55 39. 100. 0.0034E-02 15. 41377 3 56 39. 101. 0.0027E-02 16. 41377 3 57 41. 105. 0.0117E-02 17. 41377 3 58 51. 135. 0.0117E-02 18. 41377 3 59 52. 136. 0.009E-02 19. 41377 3 60 53. 137. 0.157E-02 20. 41377 3 61 53. 138. 0.061E-02 21. 41377 3 62 53. 139. 0.0297E-02 22. 41377 3 63 53. 140. 0.0031E-02 23. 41377 3 64 55. 143. 0.0103E-02 24. 41377 3 65 55. 144. 0.0044E-02 25. 41377 3 66 55. 145. 0.0032E-02 26. 41377 3 67 ENDDATA 28 0 41377 3 68 ENDSUBENT 67 0 41377 399999 SUBENT 41377004 20200901 418941377 4 1 BIB 3 5 41377 4 2 REACTION (92-U-235(N,F),DL/GRP,NU,,MXW) 41377 4 3 SAMPLE Metallic U, weight 7 gram 41377 4 4 STATUS (TABLE) From Table 1 of J.Yad.Konst.,is.2,5,1999 41377 4 5 Table 1 of J.Progress in Nuclear Energy,v.41,p.125,200241377 4 6 (DEP,41377002) Yields from prcursors 41377 4 7 ENDBIB 5 0 41377 4 8 NOCOMMON 0 0 41377 4 9 DATA 2 7 41377 4 10 HL DATA 41377 4 11 SEC PRT/FIS 41377 4 12 55.6 0.055-02 41377 4 13 24.5 0.233-02 41377 4 14 16.4 0.134-02 41377 4 15 4.9 0.309-02 41377 4 16 2.07 0.664-02 41377 4 17 0.494 0.159-02 41377 4 18 0.218 0.045-02 41377 4 19 ENDDATA 9 0 41377 4 20 ENDSUBENT 19 0 41377 499999 SUBENT 41377005 20200901 418941377 5 1 BIB 3 5 41377 5 2 REACTION (94-PU-239(N,F),DL/GRP,NU,,MXW) 41377 5 3 SAMPLE Metallic Pu, weight 10 gram 41377 5 4 STATUS (TABLE) From Table 2 of J.Yad.Konst.,is.2,5,1999 41377 5 5 Table 2 of J.Progress in Nuclear Energy,v.41,p.125,200241377 5 6 (DEP,41377003) Yields from prcursors 41377 5 7 ENDBIB 5 0 41377 5 8 NOCOMMON 0 0 41377 5 9 DATA 2 7 41377 5 10 HL DATA 41377 5 11 SEC PRT/FIS 41377 5 12 55.6 0.017-02 41377 5 13 24.5 0.157-02 41377 5 14 16.5 0.043-02 41377 5 15 5.4 0.123-02 41377 5 16 2.097 0.248-02 41377 5 17 0.46 0.061-02 41377 5 18 0.191 0.915-04 41377 5 19 ENDDATA 9 0 41377 5 20 ENDSUBENT 19 0 41377 599999 ENDENTRY 5 0 4137799999999