ENTRY M1028 20210805 M114M1028 0 1 SUBENT M1028001 20210805 M114M1028 1 1 BIB 9 28 M1028 1 2 TITLE Photoneutron reactions on 51V nucleus: systematic M1028 1 3 uncertainties in experiments and new evaluated data. M1028 1 4 AUTHOR (V.V.Varlamov,A.I.Davydov,V.N.Orlin) M1028 1 5 REFERENCE (J,YF,84,278,2021) M1028 1 6 #doi:10.31857/S0044002721030156 M1028 1 7 (J,PAN,84,389,2021) M1028 1 8 #doi:10.1134/S1063778821030157 M1028 1 9 English translation of YF,84,278,2021. M1028 1 10 INSTITUTE (4RUSMOS) M1028 1 11 INC-SOURCE (QMPH,ARAD) M1028 1 12 ANALYSIS The joint analysis of the cross sections of total and M1028 1 13 partial (g,xn), (g,n) and (g,2n) reactions obtained M1028 1 14 in different experiments was carried out using an M1028 1 15 approach which consists in analizing the systematic M1028 1 16 disagreement among data, attributed to the systematic M1028 1 17 uncertainties. Transitional multiplicity functions M1028 1 18 Fi-theor = SIG(g,in)/SIG(g,xn) M1028 1 19 were proposed in the framework of the combined M1028 1 20 photonucleon reaction model in order to evaluate M1028 1 21 photonuclear partial reaction cross sections using M1028 1 22 experimental neutron yields SIG-exp(g,xn), without M1028 1 23 the problems related to the neutron multiplicity M1028 1 24 sorting procedure M1028 1 25 SIG-eval(g,in) = Fi-theor x SIG-exp(g,xn). M1028 1 26 ERR-ANALYS (DATA-ERR) Mean-root-squared errors. M1028 1 27 STATUS (APRVD) Approved by V.Varlamov. M1028 1 28 HISTORY (20210805C) Data were compiled at the Russia MSU SINP M1028 1 29 CDFE by V.Varlamov. M1028 1 30 ENDBIB 28 0 M1028 1 31 NOCOMMON 0 0 M1028 1 32 ENDSUBENT 31 0 M1028 199999 SUBENT M1028002 20210805 M114M1028 2 1 BIB 4 22 M1028 2 2 REACTION ((23-V-51(G,N)23-V-50,,SIG,,,EVAL)+ M1028 2 3 (23-V-51(G,N+P)22-TI-49,,SIG,,,EVAL)) M1028 2 4 ANALYSIS The contribution of partial reaction (g,1n) cross M1028 2 5 section into the experimental total neutron yield M1028 2 6 reaction (g,xn) cross section obtained using M1028 2 7 quasimonoenergetic annihilation photons at Livermore M1028 2 8 (USA) was evaluated using specially theoretically M1028 2 9 calculated transitional multiplicity function - M1028 2 10 ratio M1028 2 11 F1-theor = SIG-theor(g,1n)/SIG-theor(g,xn) M1028 2 12 by the way M1028 2 13 SIG-eval(g,1n) = (F1-theor)x(SIG-exp(g,xn). M1028 2 14 REL-REF (R,L0039043,A.Veyssiere+,J,NP/A,227,513,1974) M1028 2 15 The neutron yield cross section of 51V(g,xn) reaction M1028 2 16 obtained at Saclay. M1028 2 17 (E,,B.S.Ishkhanov+,J,YF,71,517,2008) M1028 2 18 Theoretical preequilibrium model of photonuclear M1028 2 19 reactions based on the Fermi gas densities. M1028 2 20 STATUS (TABLE) Data presented in Fig. 3c. M1028 2 21 (DEP,L0039043) M1028 2 22 The neutron yield cross section of 51V(g,xn) reaction M1028 2 23 obtained at Saclay. M1028 2 24 ENDBIB 22 0 M1028 2 25 NOCOMMON 0 0 M1028 2 26 DATA 3 27 M1028 2 27 EN DATA DATA-ERR M1028 2 28 MEV MB MB M1028 2 29 13.21 9.70 1.58 M1028 2 30 13.75 10.90 1.66 M1028 2 31 14.29 13.80 1.87 M1028 2 32 14.83 17.10 2.10 M1028 2 33 15.37 23.80 2.57 M1028 2 34 15.92 33.80 3.27 M1028 2 35 16.46 45.70 4.20 M1028 2 36 17.00 58.60 5.10 M1028 2 37 17.54 68.10 5.77 M1028 2 38 18.08 76.70 6.37 M1028 2 39 18.63 73.40 6.14 M1028 2 40 19.17 70.80 6.06 M1028 2 41 19.71 64.50 5.62 M1028 2 42 20.25 61.28 5.58 M1028 2 43 20.79 57.12 5.25 M1028 2 44 21.34 46.58 4.39 M1028 2 45 21.88 38.92 3.53 M1028 2 46 22.42 31.35 2.70 M1028 2 47 22.96 27.39 2.11 M1028 2 48 23.50 25.54 1.85 M1028 2 49 24.05 23.37 1.68 M1028 2 50 24.59 20.70 1.56 M1028 2 51 25.13 18.88 1.56 M1028 2 52 25.67 16.67 1.48 M1028 2 53 26.21 15.79 1.46 M1028 2 54 26.76 13.04 1.32 M1028 2 55 27.30 11.48 1.22 M1028 2 56 ENDDATA 29 0 M1028 2 57 ENDSUBENT 56 0 M1028 299999 SUBENT M1028003 20210805 M114M1028 3 1 BIB 4 21 M1028 3 2 REACTION (23-V-51(G,2N)23-V-49,,SIG,,,EVAL) M1028 3 3 ANALYSIS The contribution of partial reaction (g,2n) cross M1028 3 4 section into the experimental total neutron yield M1028 3 5 reaction (g,xn) cross section obtained using M1028 3 6 quasimonoenergetic annihilation photons at Livermore M1028 3 7 (USA) was evaluated using specially theoretically M1028 3 8 calculated transitional multiplicity function - M1028 3 9 ratio M1028 3 10 F2-theor = SIG-theor(g,2n)/SIG-theor(g,xn) M1028 3 11 by the way M1028 3 12 SIG-eval(g,2n) = (F2-theor)x(SIG-exp(g,xn)). M1028 3 13 REL-REF (R,L0039043,A.Veyssiere+,J,NP/A,227,513,1974) M1028 3 14 The neutron yield cross section of 51V(g,xn) reaction M1028 3 15 obtained at Saclay. M1028 3 16 (E,,B.S.Ishkhanov+,J,YF,71,517,2008) M1028 3 17 Theoretical preequilibrium model of photonuclear M1028 3 18 reactions based on the Fermi gas densities. M1028 3 19 STATUS (TABLE) Data presented in Fig. 3d. M1028 3 20 (DEP,L0039043) M1028 3 21 The neutron yield cross section of 51V(g,xn) reaction M1028 3 22 obtained at Saclay. M1028 3 23 ENDBIB 21 0 M1028 3 24 NOCOMMON 0 0 M1028 3 25 DATA 3 13 M1028 3 26 EN DATA DATA-ERR M1028 3 27 MEV MB MB M1028 3 28 20.79 0.00 0.00 M1028 3 29 21.34 4.02 0.38 M1028 3 30 21.88 7.89 0.75 M1028 3 31 22.42 11.00 1.07 M1028 3 32 22.96 12.35 1.21 M1028 3 33 23.50 12.77 1.28 M1028 3 34 24.05 12.70 1.29 M1028 3 35 24.59 11.96 1.25 M1028 3 36 25.13 11.58 1.27 M1028 3 37 25.67 10.72 1.24 M1028 3 38 26.21 10.40 1.21 M1028 3 39 26.76 9.13 1.14 M1028 3 40 27.30 8.76 1.14 M1028 3 41 ENDDATA 15 0 M1028 3 42 ENDSUBENT 41 0 M1028 399999 SUBENT M1028004 20210805 M114M1028 4 1 BIB 3 10 M1028 4 2 REACTION (23-V-51(G,X)0-NN-1,UNW,SIG,,,EVAL) M1028 4 3 ANALYSIS The cross section of the total neutron reaction M1028 4 4 SIGMA(g,tot) = SIGMA(g,1n)+SIGMA(G,1n1p)+ SIGMA(g,2n) M1028 4 5 was obtained as the sum of SIGMA of the correspondent M1028 4 6 partial reactions. M1028 4 7 STATUS (TABLE) Data presented in Fig. 3b. M1028 4 8 (DEP,M1028002) M1028 4 9 The cross section of the reaction (g,1n) +(g,1n1p). M1028 4 10 (DEP,M1028003) M1028 4 11 The cross section of the reaction (g,2n). M1028 4 12 ENDBIB 10 0 M1028 4 13 NOCOMMON 0 0 M1028 4 14 DATA 3 27 M1028 4 15 EN DATA DATA-ERR M1028 4 16 MEV MB MB M1028 4 17 13.21 9.70 1.58 M1028 4 18 13.75 10.90 1.66 M1028 4 19 14.29 13.80 1.87 M1028 4 20 14.83 17.10 2.10 M1028 4 21 15.37 23.80 2.57 M1028 4 22 15.92 33.80 3.27 M1028 4 23 16.46 45.70 4.20 M1028 4 24 17.00 58.60 5.10 M1028 4 25 17.54 68.10 5.77 M1028 4 26 18.08 76.70 6.37 M1028 4 27 18.63 73.40 6.14 M1028 4 28 19.17 70.80 6.06 M1028 4 29 19.71 64.50 5.62 M1028 4 30 20.25 61.28 5.58 M1028 4 31 20.79 57.12 5.25 M1028 4 32 21.34 50.60 4.41 M1028 4 33 21.88 46.81 3.61 M1028 4 34 22.42 42.35 2.91 M1028 4 35 22.96 39.74 2.43 M1028 4 36 23.50 38.30 2.24 M1028 4 37 24.05 36.07 2.12 M1028 4 38 24.59 32.66 2.00 M1028 4 39 25.13 30.46 2.01 M1028 4 40 25.67 27.39 1.93 M1028 4 41 26.21 26.18 1.90 M1028 4 42 26.76 22.17 1.74 M1028 4 43 27.30 20.23 1.66 M1028 4 44 ENDDATA 29 0 M1028 4 45 ENDSUBENT 44 0 M1028 499999 SUBENT M1028005 20190925 M114M1028 5 1 BIB 3 4 M1028 5 2 REACTION (23-V-51(G,X)0-NN-1,UNW,INT,,,DERIV) M1028 5 3 ANALYSIS Integration of evaluated cross section. M1028 5 4 STATUS (DEP,M1028003) M1028 5 5 (TABLE) Data from Table 2. M1028 5 6 ENDBIB 4 0 M1028 5 7 NOCOMMON 0 0 M1028 5 8 DATA 3 19 M1028 5 9 EN-MAX DATA DATA-ERR M1028 5 10 MEV MB*MEV MB*MEV M1028 5 11 27.3 587.17 7.54 M1028 5 12 ENDDATA 3 0 M1028 5 13 ENDSUBENT 12 0 M1028 599999 SUBENT M1028006 20190925 M114M1028 6 1 BIB 3 5 M1028 6 2 REACTION ((23-V-51(G,N)23-V-50,,INT,,,DERIV)+ M1028 6 3 (23-V-51(G,N+P)22-TI-49,,INT,,,DERIV)) M1028 6 4 ANALYSIS Integration of evaluated cross section. M1028 6 5 STATUS (DEP,M1028002) M1028 6 6 (TABLE) Data from Table 2. M1028 6 7 ENDBIB 5 0 M1028 6 8 NOCOMMON 0 0 M1028 6 9 DATA 3 19 M1028 6 10 EN-MAX DATA DATA-ERR M1028 6 11 MEV MB*MEV MB*MEV M1028 6 12 27.3 522.73 7.40 M1028 6 13 ENDDATA 3 0 M1028 6 14 ENDSUBENT 13 0 M1028 699999 SUBENT M1028007 20190925 M114M1028 7 1 BIB 3 4 M1028 7 2 REACTION (23-V-51(G,2N)23-V-49,,INT,,,DERIV) M1028 7 3 ANALYSIS Integration of evaluated cross section. M1028 7 4 STATUS (DEP,M1028003) M1028 7 5 (TABLE) Data from Table 2. M1028 7 6 ENDBIB 4 0 M1028 7 7 NOCOMMON 0 0 M1028 7 8 DATA 3 19 M1028 7 9 EN-MAX DATA DATA-ERR M1028 7 10 MEV MB*MEV MB*MEV M1028 7 11 27.3 64.45 1.47 M1028 7 12 ENDDATA 3 0 M1028 7 13 ENDSUBENT 12 0 M1028 799999 ENDENTRY 7 0 M102899999999