ENTRY M1028 20210805 M114M102800000001 SUBENT M1028001 20210805 M114M102800100001 BIB 9 28 M102800100002 TITLE Photoneutron reactions on 51V nucleus: systematic M102800100003 uncertainties in experiments and new evaluated data. M102800100004 AUTHOR (V.V.Varlamov,A.I.Davydov,V.N.Orlin) M102800100005 REFERENCE (J,YF,84,278,2021) M102800100006 #doi:10.31857/S0044002721030156 M102800100007 (J,PAN,84,389,2021) M102800100008 #doi:10.1134/S1063778821030157 M102800100009 English translation of YF,84,278,2021. M102800100010 INSTITUTE (4RUSMOS) M102800100011 INC-SOURCE (QMPH,ARAD) M102800100012 ANALYSIS The joint analysis of the cross sections of total and M102800100013 partial (g,xn), (g,n) and (g,2n) reactions obtained M102800100014 in different experiments was carried out using an M102800100015 approach which consists in analizing the systematic M102800100016 disagreement among data, attributed to the systematic M102800100017 uncertainties. Transitional multiplicity functions M102800100018 Fi-theor = SIG(g,in)/SIG(g,xn) M102800100019 were proposed in the framework of the combined M102800100020 photonucleon reaction model in order to evaluate M102800100021 photonuclear partial reaction cross sections using M102800100022 experimental neutron yields SIG-exp(g,xn), without M102800100023 the problems related to the neutron multiplicity M102800100024 sorting procedure M102800100025 SIG-eval(g,in) = Fi-theor x SIG-exp(g,xn). M102800100026 ERR-ANALYS (DATA-ERR) Mean-root-squared errors. M102800100027 STATUS (APRVD) Approved by V.Varlamov. M102800100028 HISTORY (20210805C) Data were compiled at the Russia MSU SINP M102800100029 CDFE by V.Varlamov. M102800100030 ENDBIB 28 0 M102800100031 NOCOMMON 0 0 M102800100032 ENDSUBENT 31 0 M102800199999 SUBENT M1028002 20210805 M114M102800200001 BIB 4 22 M102800200002 REACTION ((23-V-51(G,N)23-V-50,,SIG,,,EVAL)+ M102800200003 (23-V-51(G,N+P)22-TI-49,,SIG,,,EVAL)) M102800200004 ANALYSIS The contribution of partial reaction (g,1n) cross M102800200005 section into the experimental total neutron yield M102800200006 reaction (g,xn) cross section obtained using M102800200007 quasimonoenergetic annihilation photons at Livermore M102800200008 (USA) was evaluated using specially theoretically M102800200009 calculated transitional multiplicity function - M102800200010 ratio M102800200011 F1-theor = SIG-theor(g,1n)/SIG-theor(g,xn) M102800200012 by the way M102800200013 SIG-eval(g,1n) = (F1-theor)x(SIG-exp(g,xn). M102800200014 REL-REF (R,L0039043,A.Veyssiere+,J,NP/A,227,513,1974) M102800200015 The neutron yield cross section of 51V(g,xn) reaction M102800200016 obtained at Saclay. M102800200017 (E,,B.S.Ishkhanov+,J,YF,71,517,2008) M102800200018 Theoretical preequilibrium model of photonuclear M102800200019 reactions based on the Fermi gas densities. M102800200020 STATUS (TABLE) Data presented in Fig. 3c. M102800200021 (DEP,L0039043) M102800200022 The neutron yield cross section of 51V(g,xn) reaction M102800200023 obtained at Saclay. M102800200024 ENDBIB 22 0 M102800200025 NOCOMMON 0 0 M102800200026 DATA 3 27 M102800200027 EN DATA DATA-ERR M102800200028 MEV MB MB M102800200029 13.21 9.70 1.58 M102800200030 13.75 10.90 1.66 M102800200031 14.29 13.80 1.87 M102800200032 14.83 17.10 2.10 M102800200033 15.37 23.80 2.57 M102800200034 15.92 33.80 3.27 M102800200035 16.46 45.70 4.20 M102800200036 17.00 58.60 5.10 M102800200037 17.54 68.10 5.77 M102800200038 18.08 76.70 6.37 M102800200039 18.63 73.40 6.14 M102800200040 19.17 70.80 6.06 M102800200041 19.71 64.50 5.62 M102800200042 20.25 61.28 5.58 M102800200043 20.79 57.12 5.25 M102800200044 21.34 46.58 4.39 M102800200045 21.88 38.92 3.53 M102800200046 22.42 31.35 2.70 M102800200047 22.96 27.39 2.11 M102800200048 23.50 25.54 1.85 M102800200049 24.05 23.37 1.68 M102800200050 24.59 20.70 1.56 M102800200051 25.13 18.88 1.56 M102800200052 25.67 16.67 1.48 M102800200053 26.21 15.79 1.46 M102800200054 26.76 13.04 1.32 M102800200055 27.30 11.48 1.22 M102800200056 ENDDATA 29 0 M102800200057 ENDSUBENT 56 0 M102800299999 SUBENT M1028003 20210805 M114M102800300001 BIB 4 21 M102800300002 REACTION (23-V-51(G,2N)23-V-49,,SIG,,,EVAL) M102800300003 ANALYSIS The contribution of partial reaction (g,2n) cross M102800300004 section into the experimental total neutron yield M102800300005 reaction (g,xn) cross section obtained using M102800300006 quasimonoenergetic annihilation photons at Livermore M102800300007 (USA) was evaluated using specially theoretically M102800300008 calculated transitional multiplicity function - M102800300009 ratio M102800300010 F2-theor = SIG-theor(g,2n)/SIG-theor(g,xn) M102800300011 by the way M102800300012 SIG-eval(g,2n) = (F2-theor)x(SIG-exp(g,xn)). M102800300013 REL-REF (R,L0039043,A.Veyssiere+,J,NP/A,227,513,1974) M102800300014 The neutron yield cross section of 51V(g,xn) reaction M102800300015 obtained at Saclay. M102800300016 (E,,B.S.Ishkhanov+,J,YF,71,517,2008) M102800300017 Theoretical preequilibrium model of photonuclear M102800300018 reactions based on the Fermi gas densities. M102800300019 STATUS (TABLE) Data presented in Fig. 3d. M102800300020 (DEP,L0039043) M102800300021 The neutron yield cross section of 51V(g,xn) reaction M102800300022 obtained at Saclay. M102800300023 ENDBIB 21 0 M102800300024 NOCOMMON 0 0 M102800300025 DATA 3 13 M102800300026 EN DATA DATA-ERR M102800300027 MEV MB MB M102800300028 20.79 0.00 0.00 M102800300029 21.34 4.02 0.38 M102800300030 21.88 7.89 0.75 M102800300031 22.42 11.00 1.07 M102800300032 22.96 12.35 1.21 M102800300033 23.50 12.77 1.28 M102800300034 24.05 12.70 1.29 M102800300035 24.59 11.96 1.25 M102800300036 25.13 11.58 1.27 M102800300037 25.67 10.72 1.24 M102800300038 26.21 10.40 1.21 M102800300039 26.76 9.13 1.14 M102800300040 27.30 8.76 1.14 M102800300041 ENDDATA 15 0 M102800300042 ENDSUBENT 41 0 M102800399999 SUBENT M1028004 20210805 M114M102800400001 BIB 3 10 M102800400002 REACTION (23-V-51(G,X)0-NN-1,UNW,SIG,,,EVAL) M102800400003 ANALYSIS The cross section of the total neutron reaction M102800400004 SIGMA(g,tot) = SIGMA(g,1n)+SIGMA(G,1n1p)+ SIGMA(g,2n) M102800400005 was obtained as the sum of SIGMA of the correspondent M102800400006 partial reactions. M102800400007 STATUS (TABLE) Data presented in Fig. 3b. M102800400008 (DEP,M1028002) M102800400009 The cross section of the reaction (g,1n) +(g,1n1p). M102800400010 (DEP,M1028003) M102800400011 The cross section of the reaction (g,2n). M102800400012 ENDBIB 10 0 M102800400013 NOCOMMON 0 0 M102800400014 DATA 3 27 M102800400015 EN DATA DATA-ERR M102800400016 MEV MB MB M102800400017 13.21 9.70 1.58 M102800400018 13.75 10.90 1.66 M102800400019 14.29 13.80 1.87 M102800400020 14.83 17.10 2.10 M102800400021 15.37 23.80 2.57 M102800400022 15.92 33.80 3.27 M102800400023 16.46 45.70 4.20 M102800400024 17.00 58.60 5.10 M102800400025 17.54 68.10 5.77 M102800400026 18.08 76.70 6.37 M102800400027 18.63 73.40 6.14 M102800400028 19.17 70.80 6.06 M102800400029 19.71 64.50 5.62 M102800400030 20.25 61.28 5.58 M102800400031 20.79 57.12 5.25 M102800400032 21.34 50.60 4.41 M102800400033 21.88 46.81 3.61 M102800400034 22.42 42.35 2.91 M102800400035 22.96 39.74 2.43 M102800400036 23.50 38.30 2.24 M102800400037 24.05 36.07 2.12 M102800400038 24.59 32.66 2.00 M102800400039 25.13 30.46 2.01 M102800400040 25.67 27.39 1.93 M102800400041 26.21 26.18 1.90 M102800400042 26.76 22.17 1.74 M102800400043 27.30 20.23 1.66 M102800400044 ENDDATA 29 0 M102800400045 ENDSUBENT 44 0 M102800499999 SUBENT M1028005 20190925 M114M102800500001 BIB 3 4 M102800500002 REACTION (23-V-51(G,X)0-NN-1,UNW,INT,,,DERIV) M102800500003 ANALYSIS Integration of evaluated cross section. M102800500004 STATUS (DEP,M1028003) M102800500005 (TABLE) Data from Table 2. M102800500006 ENDBIB 4 0 M102800500007 NOCOMMON 0 0 M102800500008 DATA 3 19 M102800500009 EN-MAX DATA DATA-ERR M102800500010 MEV MB*MEV MB*MEV M102800500011 27.3 587.17 7.54 M102800500012 ENDDATA 3 0 M102800500013 ENDSUBENT 12 0 M102800599999 SUBENT M1028006 20190925 M114M102800600001 BIB 3 5 M102800600002 REACTION ((23-V-51(G,N)23-V-50,,INT,,,DERIV)+ M102800600003 (23-V-51(G,N+P)22-TI-49,,INT,,,DERIV)) M102800600004 ANALYSIS Integration of evaluated cross section. M102800600005 STATUS (DEP,M1028002) M102800600006 (TABLE) Data from Table 2. M102800600007 ENDBIB 5 0 M102800600008 NOCOMMON 0 0 M102800600009 DATA 3 19 M102800600010 EN-MAX DATA DATA-ERR M102800600011 MEV MB*MEV MB*MEV M102800600012 27.3 522.73 7.40 M102800600013 ENDDATA 3 0 M102800600014 ENDSUBENT 13 0 M102800699999 SUBENT M1028007 20190925 M114M102800700001 BIB 3 4 M102800700002 REACTION (23-V-51(G,2N)23-V-49,,INT,,,DERIV) M102800700003 ANALYSIS Integration of evaluated cross section. M102800700004 STATUS (DEP,M1028003) M102800700005 (TABLE) Data from Table 2. M102800700006 ENDBIB 4 0 M102800700007 NOCOMMON 0 0 M102800700008 DATA 3 19 M102800700009 EN-MAX DATA DATA-ERR M102800700010 MEV MB*MEV MB*MEV M102800700011 27.3 64.45 1.47 M102800700012 ENDDATA 3 0 M102800700013 ENDSUBENT 12 0 M102800799999 ENDENTRY 7 0 M102899999999