ENTRY 14852 20250624 152314852000 1 SUBENT 14852001 20250624 152314852001 1 BIB 13 49 14852001 2 TITLE 12C(n,n'gamma) partial gamma-ray cross section 14852001 3 measured using the GENESIS array 14852001 4 AUTHOR (J.M.Gordon,B.L.Goldblum,J.A.Brown,T.A.Laplace, 14852001 5 J.C.Batchelder,D.L.Bleuel,C.A.Brand,B.Buckley, 14852001 6 A.Georgiadou,C.J.Henderson,T.S.Johnson,J.W.Lee, 14852001 7 K.Myers,T.S.Nagel,J.R.Sebastian,A.S.Voyles, 14852001 8 L.A.Bernstein) 14852001 9 REFERENCE (J,PR/C,111,044608,2025) 14852001 10 #doi:10.1103/PhysRevC.111.044608 14852001 11 REL-REF (D,14820001,K.J.Kelly+,J,PR/C,108,014603,2023) 14852001 12 INSTITUTE (1USAUCX,1USABRK,1USALRL,1USAAFT) 14852001 13 FACILITY (CYCLO,1USABRK) The 88-Inch Cyclotron at LBNL. 14852001 14 INC-SOURCE (D-C12) Neutrons were produced by impinging a 25 MeV 14852001 15 2H+ beam on a 3.5-mm-thick carbon breakup target in 14852001 16 the cyclotron vault. 14852001 17 DETECTOR (HPGE,SCIN) The Gamma Energy Neutron Energy 14852001 18 Spectrometer for Inelastic Scattering (GENESIS). For 14852001 19 this experiment, three Eurisys two-fold segmented 14852001 20 HPGe CLOVER detectors and twenty-six 5.08 cm dia. x 14852001 21 5.08 cm h. right-circular cylindrical EJ-309 organic 14852001 22 liquid scintillators with pulse shape discrimination 14852001 23 capabilities were included in the array. The CLOVER 14852001 24 detectors were positioned in the horizontal plane of 14852001 25 the beam at polar angles of 63, 122.5, and 151 14852001 26 degrees with respect to incident neutron beam 14852001 27 direction. The angular coverage of the CLOVER 14852001 28 detectors when operated in total detection mode was 14852001 29 6.4, 4.5, and 4.7 degrees, respectively. The EJ-309 14852001 30 cells covered an angular range of 11-165 degrees with 14852001 31 respect to the incoming neutron beam and were 14852001 32 positioned at a radial distance of approximately 0.45 14852001 33 m to 0.9 m from the carbon target. 14852001 34 SAMPLE A pressed graphite carbon target of 98.9% 12C 14852001 35 elemental purity. The target was an elliptic cylinder, 14852001 36 1 mm in thickness, with a minor diameter of 76.2 mm, 14852001 37 major diameter of 107.8 mm, and weight of 6.564 g, 14852001 38 the latter determined using an analytical balance. 14852001 39 METHOD (PSD,TOF) The 12C partial gamma-ray cross sections 14852001 40 were extracted at 63, 122.5, and 150 degrees with 14852001 41 respect to the incoming neutron beam and integrated 14852001 42 using angular distribution data available in the 14852001 43 literature. 14852001 44 CORRECTION A correction for air attenuation between the target 14852001 45 location and the location of sTOF (approx. 2.7 m) was 14852001 46 required as a modification to the neutron spectral 14852001 47 flux used in the determination of the partial 14852001 48 gamma-ray cross section data. 14852001 49 STATUS (APRVD) Approved by J.M.Gordon on June 26, 2025. 14852001 50 HISTORY (20250624C) BP 14852001 51 ENDBIB 49 0 14852001 52 NOCOMMON 0 0 14852001 53 ENDSUBENT 52 0 1485200199999 SUBENT 14852002 20250624 152314852002 1 BIB 4 87 14852002 2 REACTION (6-C-12(N,INL)6-C-12,PAR,SIG,G) 14852002 3 COVARIANCE (XY,31,EN,MEV) 14852002 4 5.54 5.70 5.87 6.04 6.23 6.42 6.61 6.82 14852002 5 7.05 7.28 7.52 7.78 8.05 8.33 8.62 8.93 14852002 6 9.26 9.61 9.99 10.37 10.79 11.22 11.68 12.17 14852002 7 12.69 13.24 13.84 14.48 15.16 15.90 16.71 14852002 8 (Z,496,COR,NO-DIM) 14852002 9 1 14852002 10 1 1 14852002 11 1 1 1 14852002 12 0.999 1 1 1 14852002 13 0.999 0.999 0.999 1 1 14852002 14 0.999 0.999 0.999 1 1 1 14852002 15 0.998 0.998 0.999 0.999 0.999 0.999 1 14852002 16 0.997 0.997 0.998 0.998 0.998 0.999 1 1 14852002 17 0.997 0.997 0.998 0.998 0.998 0.998 0.999 1 1 14852002 18 0.997 0.997 0.998 0.998 0.998 0.998 0.999 1 1 14852002 19 1 14852002 20 0.997 0.997 0.998 0.998 0.998 0.998 0.999 0.999 1 14852002 21 1 1 14852002 22 0.997 0.997 0.998 0.998 0.998 0.999 0.999 0.999 0.999 14852002 23 0.999 1 1 14852002 24 0.996 0.997 0.997 0.998 0.999 0.999 0.998 0.997 0.997 14852002 25 0.998 0.999 1 1 14852002 26 0.996 0.996 0.997 0.998 0.998 0.999 0.998 0.997 0.997 14852002 27 0.998 0.998 0.999 1 1 14852002 28 0.995 0.996 0.997 0.997 0.998 0.998 0.998 0.998 0.998 14852002 29 0.998 0.999 0.999 0.999 1 1 14852002 30 0.995 0.995 0.996 0.997 0.997 0.998 0.998 0.998 0.998 14852002 31 0.998 0.999 0.999 0.998 0.999 1 1 14852002 32 0.994 0.995 0.996 0.997 0.996 0.997 0.998 0.998 0.998 14852002 33 0.998 0.999 0.998 0.998 0.998 0.999 1 1 14852002 34 0.994 0.995 0.996 0.996 0.996 0.997 0.998 0.998 0.998 14852002 35 0.998 0.998 0.998 0.998 0.998 0.999 1 1 1 14852002 36 0.993 0.994 0.995 0.996 0.996 0.996 0.998 0.998 0.997 14852002 37 0.998 0.998 0.998 0.997 0.998 0.999 1 1 1 14852002 38 1 14852002 39 0.991 0.992 0.993 0.994 0.994 0.995 0.997 0.997 0.996 14852002 40 0.996 0.997 0.997 0.996 0.997 0.998 0.999 0.999 0.999 14852002 41 1 1 14852002 42 0.99 0.99 0.992 0.993 0.993 0.994 0.996 0.996 0.995 14852002 43 0.995 0.996 0.995 0.995 0.996 0.997 0.999 0.999 0.999 14852002 44 0.999 1 1 14852002 45 0.989 0.989 0.991 0.992 0.991 0.993 0.995 0.995 0.995 14852002 46 0.995 0.995 0.995 0.994 0.995 0.997 0.998 0.998 0.998 14852002 47 0.999 1 1 1 14852002 48 0.987 0.988 0.99 0.991 0.99 0.992 0.994 0.995 0.994 14852002 49 0.995 0.995 0.994 0.993 0.994 0.996 0.998 0.998 0.998 14852002 50 0.998 0.999 1 1 1 14852002 51 0.986 0.986 0.988 0.989 0.988 0.99 0.993 0.994 0.993 14852002 52 0.994 0.994 0.993 0.991 0.992 0.994 0.996 0.997 0.997 14852002 53 0.997 0.998 0.999 0.999 1 1 14852002 54 0.983 0.984 0.986 0.986 0.986 0.987 0.991 0.992 0.992 14852002 55 0.992 0.992 0.99 0.988 0.989 0.992 0.995 0.995 0.995 14852002 56 0.996 0.997 0.998 0.998 0.999 1 1 14852002 57 0.98 0.981 0.983 0.984 0.983 0.985 0.989 0.991 0.99 14852002 58 0.99 0.99 0.988 0.985 0.986 0.99 0.993 0.993 0.993 14852002 59 0.994 0.996 0.996 0.997 0.998 0.999 1 1 14852002 60 0.978 0.979 0.981 0.982 0.98 0.982 0.987 0.989 0.988 14852002 61 0.988 0.988 0.986 0.983 0.984 0.988 0.991 0.992 0.992 14852002 62 0.993 0.994 0.995 0.996 0.997 0.998 0.999 1 1 14852002 63 0.976 0.977 0.979 0.98 0.979 0.981 0.986 0.988 0.987 14852002 64 0.987 0.987 0.985 0.982 0.983 0.987 0.99 0.991 0.99 14852002 65 0.991 0.993 0.994 0.995 0.997 0.998 0.999 0.999 1 14852002 66 1 14852002 67 0.975 0.977 0.979 0.979 0.978 0.981 0.986 0.988 0.987 14852002 68 0.987 0.987 0.985 0.982 0.983 0.987 0.99 0.991 0.99 14852002 69 0.991 0.993 0.994 0.995 0.996 0.998 0.998 0.999 1 14852002 70 1 1 14852002 71 0.976 0.977 0.979 0.98 0.979 0.981 0.986 0.988 0.987 14852002 72 0.987 0.987 0.985 0.983 0.984 0.987 0.99 0.991 0.991 14852002 73 0.992 0.993 0.994 0.995 0.997 0.998 0.998 0.999 0.999 14852002 74 1 1 1 14852002 75 0.977 0.978 0.98 0.981 0.98 0.982 0.987 0.989 0.988 14852002 76 0.988 0.988 0.986 0.984 0.985 0.988 0.991 0.992 0.992 14852002 77 0.992 0.994 0.995 0.996 0.997 0.998 0.998 0.999 0.999 14852002 78 0.999 0.999 1 1 14852002 79 ERR-ANALYS (ERR-T) The error bars are the quadrature sum of the 14852002 80 statistical and systematic uncertainties. Target mass, 14852002 81 Timing, and Detector timing uncertainties are given in 14852002 82 absolute values. 14852002 83 (ERR-S) Statistical uncertainties. 14852002 84 (ERR-SYS) Systematic uncertainties. 14852002 85 (ERR-1) Multiple scatter. 14852002 86 (ERR-2) Detector response. 14852002 87 (ERR-3) Angular distribution. 14852002 88 STATUS (TABLE,,J.M.Gordon+,J,PR/C,111,044608,2025) Table - II 14852002 89 ENDBIB 87 0 14852002 90 COMMON 6 3 14852002 91 E ERR-S ERR-SYS ERR-1 ERR-2 ERR-3 14852002 92 MEV PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 14852002 93 4.439 0.52 5.8 1.231 4.0 1.514852002 94 ENDCOMMON 3 0 14852002 95 DATA 5 31 14852002 96 EN +EN-RSL -EN-RSL DATA ERR-T 14852002 97 MEV MEV MEV MB MB 14852002 98 5.54 0.16 0.16 157.65 18.73 14852002 99 5.70 0.17 0.16 185.29 17.53 14852002 100 5.87 0.18 0.17 261.56 17.60 14852002 101 6.04 0.19 0.18 254.87 16.20 14852002 102 6.23 0.20 0.19 283.46 16.25 14852002 103 6.42 0.20 0.20 286.38 14.51 14852002 104 6.61 0.21 0.20 256.02 13.41 14852002 105 6.82 0.23 0.22 235.88 12.94 14852002 106 7.05 0.24 0.23 253.38 12.26 14852002 107 7.28 0.25 0.24 276.65 13.26 14852002 108 7.52 0.26 0.25 303.26 13.51 14852002 109 7.78 0.28 0.26 369.92 15.44 14852002 110 8.05 0.29 0.28 359.25 14.67 14852002 111 8.33 0.3 0.29 320.12 13.03 14852002 112 8.62 0.32 0.30 313.33 12.58 14852002 113 8.93 0.34 0.32 308.42 12.40 14852002 114 9.26 0.36 0.34 304.69 12.28 14852002 115 9.61 0.38 0.36 316.71 12.38 14852002 116 9.99 0.40 0.38 315.52 12.22 14852002 117 10.37 0.43 0.40 334.84 13.33 14852002 118 10.79 0.45 0.43 328.57 12.79 14852002 119 11.22 0.48 0.45 290.44 11.34 14852002 120 11.68 0.51 0.48 271.31 11.10 14852002 121 12.17 0.54 0.51 274.43 11.65 14852002 122 12.69 0.58 0.54 245.87 10.46 14852002 123 13.24 0.62 0.57 234.28 9.73 14852002 124 13.84 0.66 0.62 225.42 10.07 14852002 125 14.48 0.71 0.66 204.33 9.76 14852002 126 15.16 0.76 0.7 194.34 10.02 14852002 127 15.90 0.83 0.76 180.91 9.36 14852002 128 16.71 0.91 0.83 170.13 10.42 14852002 129 ENDDATA 33 0 14852002 130 ENDSUBENT 129 0 1485200299999 ENDENTRY 2 0 1485299999999