ENTRY 41738 20231221 421641738 0 1 SUBENT 41738001 20231221 421641738 1 1 BIB 17 56 41738 1 2 TITLE Prompt fission neutron investigation in 235U(nth,f) 41738 1 3 and 252Cf(sf) reactions 41738 1 4 AUTHOR (Sh.Zeynalov, P.Sedyshev, V.Shvetsov, O.Sidorova) 41738 1 5 REFERENCE (J,EPJ/CS,211,04003,2019) 41738 1 6 #doi:10.1051/epjconf/201921104003 41738 1 7 (J,EPJ/CS,146,04022,2017) 41738 1 8 #doi:10.1051/epjconf/201714604022 41738 1 9 Preliminary data. 41738 1 10 REL-REF (O,41739001,Sh.Zeynalov+,J,EPJ/CS,211,04003,2019) 41738 1 11 Data for Cf-252 41738 1 12 (M,23175001,C.Budtz-Jorgensen+,J,NP/A,490,307,1988) 41738 1 13 Exp.method and data analysis procedure 41738 1 14 (M,,O.Zeynalova+,S,AIP-1404,325,2011) 41738 1 15 Pulse shape analysis. 41738 1 16 INSTITUTE (4ZZZDUB) 41738 1 17 FACILITY (REAC,4ZZZDUB) IBR-2 reactor 41738 1 18 INC-SOURCE (REAC) Bent mirror neutron guide. 41738 1 19 INC-SPECT Thermal neutrons 41738 1 20 SAMPLE Enriched (99.99%) U vacuum evaporated on the polyamide 41738 1 21 foil of 35 microgram/cm2. The homogeneous U layer 41738 1 22 thickness was 48 microg/cm2. The target was of 41738 1 23 circular shape with 70 mm diameter, gold plated 41738 1 24 (~20 microgram/cm2). 41738 1 25 The cathode of fission chamber serves as backing 41738 1 26 for the fissile deposit. 41738 1 27 DETECTOR (IOCH) Twin Frisch grid ionization chamber for the 41738 1 28 fission fragment detection. Operated with P10 gas 41738 1 29 mixture at constant flow (~35 ml/min) at pressure 41738 1 30 of 1.05 bar. 41738 1 31 (SCIN) NE213 equivalent neutron detector. 41738 1 32 .A digital pulse processing (DPP) system, consisting of41738 1 33 six synchronous waveform digitizers (12bit, 250MS/sec) 41738 1 34 METHOD (TOF,COINC) The fission fragment kinetic energy, mass 41738 1 35 and angular distribution has been investigated along 41738 1 36 with prompt neutron time of flight and pulse shape 41738 1 37 using a six channel synchronous waveform digitizer 41738 1 38 with sampling frequency of 250 MHz and 12 bit 41738 1 39 resolution.The signals were analyzed using digital 41738 1 40 pulse processing algorithms, developed by authors. 41738 1 41 About 10**6 neutron coincidences were registered. 41738 1 42 PFN flight path - 0.65 m. 41738 1 43 PART-DET (N,FF) 41738 1 44 ASSUMED (ASSUM1,92-U-235(N,F),PRE,AKE,LF+HF) 41738 1 45 (ASSUM2,92-U-235(N,F),PRE,AKE,LF) 41738 1 46 Data used for FF kinetic energy calibration. 41738 1 47 ANALYSIS Prompt fission neutrons were separated from gammas 41738 1 48 using pulse shape analysis. 41738 1 49 CORRECTION For energy losses, for pulse height defect. 41738 1 50 For backgrounds. 41738 1 51 COMMENT Of author Sh.Zeynalov 15-09-2021. 41738 1 52 All given data evaluated before neutron emission, i.e.41738 1 53 corrected for PFN emission. 41738 1 54 HISTORY (20210624R) Data were received from the author 41738 1 55 Sh.Zeynalov. 41738 1 56 (20210625C) M.M. 41738 1 57 (20231221A) Subent 004 was corrected. 41738 1 58 ENDBIB 56 0 41738 1 59 COMMON 3 3 41738 1 60 EN-DUMMY ASSUM1 ASSUM2 41738 1 61 EV MEV MEV 41738 1 62 0.0253 170.5 100.6 41738 1 63 ENDCOMMON 3 0 41738 1 64 ENDSUBENT 63 0 41738 199999 SUBENT 41738002 20210625 419841738 2 1 BIB 4 8 41738 2 2 REACTION (92-U-235(N,F)MASS,PRE/PR/FRG,NU) 41738 2 3 REL-REF (A,41397001,V.F.Apalin+,J,NP,55,249,1964) 41738 2 4 ERR-ANALYS (ERR-S) Statistical uncertainty. 41738 2 5 STATUS (TABLE) Data from author Sh.Zeynalov. 41738 2 6 Data are presented on Fig.6 a of 41738 2 7 Eur.Phys.J., Conf.Ser.,v.146,p.04022,2017 (preliminary)41738 2 8 Fig.3 left of Eur.Phys.J.,Conf.Ser.,v.211,p.04003,2019 41738 2 9 (final). 41738 2 10 ENDBIB 8 0 41738 2 11 NOCOMMON 0 0 41738 2 12 DATA 3 81 41738 2 13 MASS DATA ERR-S 41738 2 14 NO-DIM PRT/FIS PRT/FIS 41738 2 15 79.5 0.04652 0.00895 41738 2 16 80.5 0.13028 0.0179 41738 2 17 81.5 0.21086 0.02314 41738 2 18 82.5 0.28826 0.0249 41738 2 19 83.5 0.36248 0.02427 41738 2 20 84.5 0.41685 0.02144 41738 2 21 85.5 0.49622 0.02086 41738 2 22 86.5 0.55754 0.01896 41738 2 23 87.5 0.62181 0.01718 41738 2 24 88.5 0.69386 0.01619 41738 2 25 89.5 0.73383 0.01502 41738 2 26 90.5 0.77385 0.01367 41738 2 27 91.5 0.81932 0.01256 41738 2 28 92.5 0.87276 0.01233 41738 2 29 93.5 0.91962 0.01236 41738 2 30 94.5 0.96745 0.01248 41738 2 31 95.5 0.9753 0.01246 41738 2 32 96.5 0.9965 0.01294 41738 2 33 97.5 1.0374 0.01288 41738 2 34 98.5 1.07795 0.01351 41738 2 35 99.5 1.11035 0.01386 41738 2 36 100.5 1.16264 0.01483 41738 2 37 101.5 1.21978 0.01579 41738 2 38 102.5 1.27883 0.01693 41738 2 39 103.5 1.36037 0.01925 41738 2 40 104.5 1.45863 0.02191 41738 2 41 105.5 1.5771 0.02595 41738 2 42 106.5 1.80563 0.03391 41738 2 43 107.5 2.16965 0.04941 41738 2 44 108.5 2.76303 0.07596 41738 2 45 109.5 3.51962 0.14067 41738 2 46 110.5 3.95422 0.21136 41738 2 47 111.5 3.78158 0.34666 41738 2 48 112.5 3.07026 0.38082 41738 2 49 113.5 2.35915 0.33035 41738 2 50 114.5 1.84613 0.25851 41738 2 51 115.5 1.65128 0.24086 41738 2 52 116.5 1.58544 0.42373 41738 2 53 117.5 1.60164 0.22427 41738 2 54 118.5 1.65523 0.22736 41738 2 55 119.5 1.71172 0.23737 41738 2 56 120.5 1.7461 0.28325 41738 2 57 121.5 1.71797 0.24296 41738 2 58 122.5 1.59073 0.27691 41738 2 59 123.5 1.3487 0.24624 41738 2 60 124.5 1.14 0.23771 41738 2 61 125.5 1.0485 0.13316 41738 2 62 126.5 0.88286 0.07114 41738 2 63 127.5 0.72515 0.04813 41738 2 64 128.5 0.60576 0.03158 41738 2 65 129.5 0.58754 0.02754 41738 2 66 130.5 0.54398 0.02192 41738 2 67 131.5 0.62714 0.02172 41738 2 68 132.5 0.74129 0.02202 41738 2 69 133.5 0.87899 0.02202 41738 2 70 134.5 1.01413 0.02255 41738 2 71 135.5 1.17937 0.02302 41738 2 72 136.5 1.2744 0.02304 41738 2 73 137.5 1.36155 0.02288 41738 2 74 138.5 1.39908 0.02241 41738 2 75 139.5 1.40851 0.02211 41738 2 76 140.5 1.44375 0.02299 41738 2 77 141.5 1.49651 0.02341 41738 2 78 142.5 1.52571 0.02338 41738 2 79 143.5 1.53546 0.02455 41738 2 80 144.5 1.62771 0.02668 41738 2 81 145.5 1.67314 0.02861 41738 2 82 146.5 1.74097 0.03179 41738 2 83 147.5 1.83563 0.0376 41738 2 84 148.5 2.08136 0.04661 41738 2 85 149.5 2.26347 0.05617 41738 2 86 150.5 2.38962 0.06864 41738 2 87 151.5 2.47741 0.0783 41738 2 88 152.5 2.53946 0.09689 41738 2 89 153.5 2.63733 0.11724 41738 2 90 154.5 2.77929 0.15512 41738 2 91 155.5 2.96368 0.20549 41738 2 92 156.5 3.19347 0.29032 41738 2 93 157.5 3.46734 0.42048 41738 2 94 158.5 3.78531 0.65894 41738 2 95 159.5 4.10503 0.85596 41738 2 96 ENDDATA 83 0 41738 2 97 ENDSUBENT 96 0 41738 299999 SUBENT 41738003 20210625 419841738 3 1 BIB 3 7 41738 3 2 REACTION (92-U-235(N,F),PR,NU/TKE) 41738 3 3 ERR-ANALYS (ERR-S) Statistical uncertainty. 41738 3 4 STATUS (TABLE) Data from author Sh.Zeynalov. 41738 3 5 Data are presented on Fig.6 b of 41738 3 6 Eur.Phys.J. Conf.Ser.,v.146,p.04022,2017 (preliminary),41738 3 7 Fig.3 right of Eur.Phys.J. Conf.Ser.,v.211,p.04003,201941738 3 8 (final) 41738 3 9 ENDBIB 7 0 41738 3 10 NOCOMMON 0 0 41738 3 11 DATA 3 61 41738 3 12 TKE DATA ERR-S 41738 3 13 MEV PRT/FIS PRT/FIS 41738 3 14 140.5 3.09808 1.3286 41738 3 15 141.5 4.08121 1.03663 41738 3 16 142.5 4.09598 0.89515 41738 3 17 143.5 4.12257 0.86552 41738 3 18 144.5 3.68112 0.69105 41738 3 19 145.5 4.12791 0.71319 41738 3 20 146.5 3.47468 0.51726 41738 3 21 147.5 3.84821 0.51655 41738 3 22 148.5 3.81447 0.47245 41738 3 23 149.5 3.56395 0.39238 41738 3 24 150.5 3.11401 0.32076 41738 3 25 151.5 3.14031 0.2964 41738 3 26 152.5 3.16408 0.2754 41738 3 27 153.5 3.26535 0.26308 41738 3 28 154.5 2.9513 0.22362 41738 3 29 155.5 2.8918 0.20474 41738 3 30 156.5 2.85273 0.18862 41738 3 31 157.5 2.82832 0.17906 41738 3 32 158.5 2.8411 0.17134 41738 3 33 159.5 2.70524 0.15394 41738 3 34 160.5 2.65111 0.14624 41738 3 35 161.5 2.50703 0.13676 41738 3 36 162.5 2.50038 0.13183 41738 3 37 163.5 2.46175 0.12644 41738 3 38 164.5 2.37774 0.11982 41738 3 39 165.5 2.2198 0.11143 41738 3 40 166.5 2.36072 0.11719 41738 3 41 167.5 2.16513 0.1073 41738 3 42 168.5 2.12614 0.10696 41738 3 43 169.5 2.09282 0.10667 41738 3 44 170.5 1.89334 0.09808 41738 3 45 171.5 1.91155 0.10056 41738 3 46 172.5 1.85898 0.10105 41738 3 47 173.5 1.88558 0.10545 41738 3 48 174.5 1.66597 0.09723 41738 3 49 175.5 1.59253 0.09635 41738 3 50 176.5 1.63324 0.10258 41738 3 51 177.5 1.61939 0.10515 41738 3 52 178.5 1.47634 0.10094 41738 3 53 179.5 1.46069 0.10368 41738 3 54 180.5 1.36879 0.10356 41738 3 55 181.5 1.14673 0.09154 41738 3 56 182.5 1.26129 0.10796 41738 3 57 183.5 1.10904 0.09912 41738 3 58 184.5 1.13669 0.10897 41738 3 59 185.5 1.0842 0.11023 41738 3 60 186.5 0.9271 0.10246 41738 3 61 187.5 0.862 0.10463 41738 3 62 188.5 0.84901 0.11314 41738 3 63 189.5 0.68247 0.10539 41738 3 64 190.5 0.65678 0.10534 41738 3 65 191.5 0.618 0.11319 41738 3 66 192.5 0.58575 0.11686 41738 3 67 193.5 0.50135 0.11716 41738 3 68 194.5 0.30658 0.08523 41738 3 69 195.5 0.35509 0.09687 41738 3 70 196.5 0.20365 0.06909 41738 3 71 197.5 0.17007 0.07054 41738 3 72 198.5 0.07429 0.03409 41738 3 73 199.5 4.5526E-4 2.68498E-4 41738 3 74 200.5 2.97934E-4 1.70248E-4 41738 3 75 ENDDATA 63 0 41738 3 76 ENDSUBENT 75 0 41738 399999 SUBENT 41738004 20231221 421641738 4 1 BIB 5 11 41738 4 2 REACTION 1(92-U-235(N,F)MASS,PRE,FY) 41738 4 3 2(92-U-235(N,F)MASS,PRE,FY) 41738 4 4 ANALYSIS 1 With measured NU. 41738 4 5 2 With NU from V.F.Apalin+. 41738 4 6 REL-REF (A,,C.Wagemans+,B,WAGEMANS,,,1991) 41738 4 7 2(R,41397001,V.F.Apalin+,J,NP,55,249,1964) 41738 4 8 STATUS (TABLE) Data from author Sh.Zeynalov. 41738 4 9 Data are presented on Fig.7 of 41738 4 10 Eur.Phys.J. Conf.Ser.,v.146,p.04022,2017 41738 4 11 (PRELM) 41738 4 12 HISTORY (20231221A) Units were corrected: PRT/FIS -> PC/FIS 41738 4 13 ENDBIB 11 0 41738 4 14 NOCOMMON 0 0 41738 4 15 DATA 3 80 41738 4 16 MASS DATA 1DATA 2 41738 4 17 NO-DIM PC/FIS PC/FIS 41738 4 18 79.5 0.03859 0.07472 41738 4 19 80.5 0.07969 0.10305 41738 4 20 81.5 0.14465 0.15071 41738 4 21 82.5 0.24583 0.22495 41738 4 22 83.5 0.37679 0.34458 41738 4 23 84.5 0.55864 0.51398 41738 4 24 85.5 0.81733 0.76478 41738 4 25 86.5 1.13604 1.08961 41738 4 26 87.5 1.56599 1.51252 41738 4 27 88.5 2.09965 2.05581 41738 4 28 89.5 2.70261 2.7323 41738 4 29 90.5 3.41971 3.48619 41738 4 30 91.5 4.20269 4.33153 41738 4 31 92.5 4.92111 4.93004 41738 4 32 93.5 5.51668 5.52851 41738 4 33 94.5 5.99346 5.99263 41738 4 34 95.5 6.18426 6.05702 41738 4 35 96.5 6.40991 6.29567 41738 4 36 97.5 6.58426 6.31135 41738 4 37 98.5 6.47445 6.36745 41738 4 38 99.5 6.25522 6.15077 41738 4 39 100.5 6.07695 5.90318 41738 4 40 101.5 5.70807 5.60663 41738 4 41 102.5 5.20905 5.21039 41738 4 42 103.5 4.56354 4.61481 41738 4 43 104.5 3.77591 3.81843 41738 4 44 105.5 2.96818 3.02096 41738 4 45 106.5 2.26291 2.23894 41738 4 46 107.5 1.58201 1.55989 41738 4 47 108.5 1.03306 0.95343 41738 4 48 109.5 0.54523 0.5459 41738 4 49 110.5 0.24112 0.30494 41738 4 50 111.5 0.09321 0.18398 41738 4 51 112.5 0.04772 0.09768 41738 4 52 113.5 0.03478 0.07003 41738 4 53 114.5 0.02929 0.06754 41738 4 54 115.5 0.02716 0.06549 41738 4 55 116.5 0.02646 0.06736 41738 4 56 117.5 0.02632 0.06373 41738 4 57 118.5 0.02626 0.06461 41738 4 58 119.5 0.02632 0.06373 41738 4 59 120.5 0.02646 0.06734 41738 4 60 121.5 0.02716 0.06549 41738 4 61 122.5 0.02929 0.06754 41738 4 62 123.5 0.03478 0.0655 41738 4 63 124.5 0.04772 0.09768 41738 4 64 125.5 0.09321 0.18398 41738 4 65 126.5 0.24112 0.30494 41738 4 66 127.5 0.54523 0.5459 41738 4 67 128.5 1.03306 0.95343 41738 4 68 129.5 1.58201 1.55989 41738 4 69 130.5 2.26288 2.23894 41738 4 70 131.5 2.96818 3.02096 41738 4 71 132.5 3.77594 3.81843 41738 4 72 133.5 4.56354 4.61481 41738 4 73 134.5 5.20905 5.21039 41738 4 74 135.5 5.70799 5.60663 41738 4 75 136.5 6.07692 5.90318 41738 4 76 137.5 6.25525 6.15077 41738 4 77 138.5 6.47445 6.36745 41738 4 78 139.5 6.58429 6.31135 41738 4 79 140.5 6.40994 6.29567 41738 4 80 141.5 6.18426 6.05702 41738 4 81 142.5 5.99343 5.99264 41738 4 82 143.5 5.51668 5.52851 41738 4 83 144.5 4.92114 4.93004 41738 4 84 145.5 4.20269 4.33153 41738 4 85 146.5 3.41971 3.48619 41738 4 86 147.5 2.70263 2.7323 41738 4 87 148.5 2.09965 2.05581 41738 4 88 149.5 1.56596 1.51252 41738 4 89 150.5 1.13601 1.08961 41738 4 90 151.5 0.81735 0.76478 41738 4 91 152.5 0.55864 0.51398 41738 4 92 153.5 0.37679 0.34458 41738 4 93 154.5 0.24583 0.22495 41738 4 94 155.5 0.14465 0.15071 41738 4 95 156.5 0.07969 0.10305 41738 4 96 157.5 0.03859 0.07472 41738 4 97 158.5 0.01666 0.05917 41738 4 98 ENDDATA 82 0 41738 4 99 ENDSUBENT 98 0 41738 499999 ENDENTRY 4 0 4173899999999