ENTRY 23775 20210506 23002377500000001 SUBENT 23775001 20210506 23002377500100001 BIB 12 27 2377500100002 TITLE Prompt gamma-ray characteristics from 235U(n,f) at 2377500100003 En = 1.7 MeV 2377500100004 AUTHOR (A.Oberstedt,M.Lebois,S.Oberstedt,L.Qi,J.N.Wilson) 2377500100005 INSTITUTE (3RUMBUC) Extreme Light Infrastructure-Nuclear Physics 2377500100006 (ELI-NP) 2377500100007 (2FR PAR,2ZZZGEL,3CPRIHP) 2377500100008 (2FR FR ) Institut Universitaire de France, 2377500100009 1 Rue Descartes, 75005 Paris, France 2377500100010 REFERENCE (J,EPJ/A,56,236,2020) 2377500100011 #doi:10.1140/epja/s10050-020-00246-1 2377500100012 FACILITY (VDGT,2FR PAR) Tandem accelerator of the ALTO facility,2377500100013 IPN Orsay. 2377500100014 INC-SOURCE p(7Li,n) LICORNE (Lithium Inverse Cinematiques ORsay 2377500100015 NEutron source) 2377500100016 SAMPLE 235U and 238U samples of 10 mg approximate mass each. 2377500100017 METHOD (COINC) Fission fragments and gammas rays. 2377500100018 Coincidence timing resolution = 4 ns 2377500100019 REL-REF (I,,M.Lebois+,J,NIM/A,735,145,2014) 2377500100020 The directional fast-neutron source LICORNE 2377500100021 ERR-ANALYS (DATA-ERR) The uncertainties of the prompt fission 2377500100022 gamma-rays FY/DE include statistical ones as well as 2377500100023 those from the adjustments made and the transformation 2377500100024 function. 2377500100025 STATUS (TABLE) Data received from A.Oberstedt, 3 May 2021. 2377500100026 (APRVD) Approved by A.Oberstedt 20.05.2021 2377500100027 HISTORY (20210503R) Data received from A.Oberstedt. 2377500100028 (20210504C) VS. 2377500100029 ENDBIB 27 0 2377500100030 COMMON 1 3 2377500100031 EN-MEAN 2377500100032 MEV 2377500100033 1.7 2377500100034 ENDCOMMON 3 0 2377500100035 ENDSUBENT 34 0 2377500199999 SUBENT 23775002 20210506 23002377500200001 BIB 5 14 2377500200002 REACTION (92-U-235(N,F)0-G-0,PR,FY/DE) 2377500200003 DETECTOR (IOCH) Twin Frisch-grid ionization chamber, filled with2377500200004 P10 counting gas at a pressure of 1.2 atm - for fission2377500200005 fragments detection. Placed at 15 cm from the neutron 2377500200006 source. 2377500200007 (BAF2) 14 hexagonal BaF2 crystals of 10 cm diameter, 2377500200008 14 cm length 2377500200009 ANALYSIS Integral 235U(n,f) PFGS in the energy range 2377500200010 0.5 MeV < E < 6 MeV adjusted to the value of 238U(n,f) 2377500200011 PFGS at En=1.9 MeV 2377500200012 REL-REF (R,23417007,Qi+,J,PR/C,98,014612,2018) 2377500200013 238U(n,f) prompt gamma fission yield at E = 1.9 MeV. 2377500200014 STATUS (TABLE) Plotted on Fig.3 of Eur.Phys.J.A56(2020)236 2377500200015 (COREL,23775003) Data from LaBr3:Ce detectors 2377500200016 ENDBIB 14 0 2377500200017 NOCOMMON 0 0 2377500200018 DATA 3 21 2377500200019 E DATA DATA-ERR 2377500200020 MEV PD/FIS/MEV PD/FIS/MEV 2377500200021 0.49066 5.7525 0.20565 2377500200022 0.61938 4.9654 0.17763 2377500200023 0.76665 3.3523 0.18129 2377500200024 0.92302 2.5383 0.18462 2377500200025 1.107 1.7421 0.12667 2377500200026 1.2908 1.6593 0.059391 2377500200027 1.5024 1.0843 0.058638 2377500200028 1.7323 0.74426 0.082579 2377500200029 1.9715 0.4707 0.052167 2377500200030 2.238 0.38693 0.042923 2377500200031 2.5046 0.31807 0.04151 2377500200032 2.7989 0.1947 0.033226 2377500200033 3.102 0.21147 0.031805 2377500200034 3.4331 0.13377 0.031215 2377500200035 3.7731 0.10301 0.028516 2377500200036 4.1318 0.065164 0.024003 2377500200037 4.4993 0.061083 0.025437 2377500200038 4.9035 0.056332 0.026254 2377500200039 5.3085 0.020756 0.024298 2377500200040 5.7304 0.050326 0.022193 2377500200041 6.1729 0.0055169 0.01996 2377500200042 ENDDATA 23 0 2377500200043 ENDSUBENT 42 0 2377500299999 SUBENT 23775003 20210506 23002377500300001 BIB 4 14 2377500300002 REACTION (92-U-235(N,F)0-G-0,PR,FY/DE) 2377500300003 DETECTOR (IOCH) Twin Frisch-grid ionization chamber, filled with2377500300004 P10 counting gas at a pressure of 1.2 atm - for fission2377500300005 fragments detection. Placed at 15 cm from the neutron 2377500300006 source. 2377500300007 (SCIN) Three coaxial LaBr3:Ce scintillation detectors. 2377500300008 ANALYSIS The LaBr3:Ce spectrum was adjusted to the BaF2 2377500300009 spectrum by requiring the same integral, i.e. 2377500300010 multiplicity, within the overlap region 2377500300011 0.5 MeV < Egamma < 2.0 MeV. 2377500300012 (UNFLD) 238U(n,f) PFGS at En=1.9 MeV used to 2377500300013 determine the response matrix of the detector. 2377500300014 STATUS (TABLE) Plotted on Fig.3 of Eur.Phys.J.A56(2020)236 2377500300015 (COREL,23775002) Data from BaF2 detector. 2377500300016 ENDBIB 14 0 2377500300017 NOCOMMON 0 0 2377500300018 DATA 3 19 2377500300019 E DATA DATA-ERR 2377500300020 MEV PD/FIS/MEV PD/FIS/MEV 2377500300021 0.10782 4.2825 0.76929 2377500300022 0.15351 6.8339 0.22928 2377500300023 0.20750 12.021 0.38864 2377500300024 0.26984 7.2203 0.23330 2377500300025 0.34054 10.066 0.24820 2377500300026 0.41962 7.6896 0.16742 2377500300027 0.49066 6.9874 0.29636 2377500300028 0.50711 8.7523 0.23188 2377500300029 0.60301 3.4419 0.080266 2377500300030 0.70734 5.0338 0.14644 2377500300031 0.82010 2.8804 0.092909 2377500300032 0.94130 1.4147 0.21244 2377500300033 1.0710 0.36777 0.49081 2377500300034 1.2091 1.0585 0.060000 2377500300035 1.3556 1.0918 0.054410 2377500300036 1.5107 0.28894 0.073516 2377500300037 1.6742 1.1017 0.085971 2377500300038 1.8461 0.26906 0.018504 2377500300039 2.0266 0.26277 0.058923 2377500300040 ENDDATA 21 0 2377500300041 ENDSUBENT 40 0 2377500399999 SUBENT 23775004 20210506 23002377500400001 BIB 4 15 2377500400002 REACTION (92-U-235(N,F)0-G-0,PR,FY/DE) 2377500400003 ADD-RES Total gamma energy: 2377500400004 (5.79 +- 0.22) MeV for prompt time window = 2377500400005 2*coincidence timing resolution 2377500400006 (6.03 +- 0.47) MeV for prompt time window = 2377500400007 2.5*coincidence timing resolution 2377500400008 ANALYSIS Combined spectrum, which consists of the spectra 2377500400009 taken with the LaBr3:Ce and the BaF2 detectors below 2377500400010 and above the overlap region, respectively, and in 2377500400011 between of an averaged spectrum of both-re-binned to 2377500400012 the same energies. 2377500400013 STATUS (TABLE) Plotted on Fig.3 of Eur.Phys.J.A56(2020)236 2377500400014 (DEP,23299005) PFGS from BaF2 crystals 2377500400015 (DEP,23299006) PFGS from LaBr3:Ce scintillation 2377500400016 detectors 2377500400017 ENDBIB 15 0 2377500400018 NOCOMMON 0 0 2377500400019 DATA 3 27 2377500400020 E DATA DATA-ERR 2377500400021 MEV PD/FIS/MEV PD/FIS/MEV 2377500400022 0.10782 4.2825 0.76929 2377500400023 0.15351 6.8339 0.22928 2377500400024 0.2075 12.021 0.38864 2377500400025 0.26984 7.2203 0.2333 2377500400026 0.34054 10.066 0.2482 2377500400027 0.41962 7.6896 0.16742 2377500400028 0.49066 6.9874 0.29927 2377500400029 0.61938 5.3438 0.23516 2377500400030 0.76665 4.2492 0.22803 2377500400031 0.92302 2.0393 0.65501 2377500400032 1.107 1.5354 0.43412 2377500400033 1.2908 1.3554 0.10009 2377500400034 1.5024 1.3111 0.15149 2377500400035 1.7323 0.92859 0.13198 2377500400036 1.9715 0.48588 0.079947 2377500400037 2.238 0.38693 0.042923 2377500400038 2.5046 0.31807 0.04151 2377500400039 2.7989 0.1947 0.033226 2377500400040 3.102 0.21147 0.031805 2377500400041 3.4331 0.13377 0.031215 2377500400042 3.7731 0.10301 0.028516 2377500400043 4.1318 0.065164 0.024003 2377500400044 4.4993 0.061083 0.025437 2377500400045 4.9035 0.056332 0.026254 2377500400046 5.3085 0.020756 0.024298 2377500400047 5.7304 0.050326 0.022193 2377500400048 6.1729 0.0055169 0.01996 2377500400049 ENDDATA 29 0 2377500400050 ENDSUBENT 49 0 2377500499999 SUBENT 23775005 20210506 23002377500500001 BIB 3 6 2377500500002 REACTION 1(92-U-235(N,F)0-G-0,PR/PAR,FY) 2377500500003 2(92-U-235(N,F)0-G-0,PR/PAR,FY) 2377500500004 ANALYSIS 1Prompt time window = 2*coincidence timing resolution 2377500500005 2Prompt time window = 2.5*coincidence timing resolution 2377500500006 STATUS (TABLE) Table 1 of Eur.Phys.J.A56(2020)236 2377500500007 (DEP,23299007) Combined PFGS 2377500500008 ENDBIB 6 0 2377500500009 NOCOMMON 0 0 2377500500010 DATA 6 1 2377500500011 E-MIN E-MAX DATA 1DATA-ERR 1DATA 2DATA-ERR 22377500500012 MEV MEV PRD/FIS PRD/FIS PRD/FIS PRD/FIS 2377500500013 0.1 6.0 7.16 0.17 7.45 0.48 2377500500014 ENDDATA 3 0 2377500500015 ENDSUBENT 14 0 2377500599999 SUBENT 23775006 20210506 23002377500600001 BIB 3 7 2377500600002 REACTION 1(92-U-235(N,F)0-G-0,PR/PAR,KE) 2377500600003 2(92-U-235(N,F)0-G-0,PR/PAR,KE) 2377500600004 ANALYSIS 1Prompt time window = 2*coincidence timing resolution 2377500600005 2Prompt time window = 2.5*coincidence timing resolution 2377500600006 STATUS (TABLE) Table 1 of Eur.Phys.J.A56(2020)236. 2377500600007 (DEP,23299006) Combined PFGS from BaF2 crystals and 2377500600008 LaBr3:Ce detectors 2377500600009 ENDBIB 7 0 2377500600010 NOCOMMON 0 0 2377500600011 DATA 6 1 2377500600012 E-MIN E-MAX DATA 1DATA-ERR 1DATA 2DATA-ERR 22377500600013 MEV MEV MEV MEV MEV MEV 2377500600014 0.1 6.0 0.81 0.04 0.81 0.042377500600015 ENDDATA 3 0 2377500600016 ENDSUBENT 15 0 2377500699999 ENDENTRY 6 0 2377599999999