/*===================================================================*/ /* NRDF D1945 Data No.15 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,15; D#=D1945; TITLE=/ Anomalies in the scattering of alpha particles by carbon /; ATH=(T.MIKUMO'1'); INST-ATH=(2JPNINS'1'); REF=JPJ; VLP=16(1961)1066; /* Secondary reference - INS-J, 61(1963) (I.Nonaka et al., Numerical data) RCTS=12C(ALPHA,ALPHA)12C; PHQS=ANGL-DSTRN; /*===================================================================*/ /* Experimental Conditions */ /*===================================================================*/ \\EXP,15; /* 2005-07-22 : Compiled, C.Kurokawa + N.Otuka */ PHQ=ANGL-DSTRN; CHM=ELM; PHYS-FORM=SLD; THK-TGT=1.37MG/CM**2; BAC=SELF; POL-TGT=0%; ALGN-TGT=0%; ACC=CYC; INST-ACC=2JPNINS; DELTA-INC-ENGY-LAB=1.0MEV'2'; /* '2' Absolute error in beam energy */ ERS-PRJ=0.5MEV'3'; /* '3' Relative error in beam energy */ POL-PRJ=0%; DET-PARTCL=ALPHA; COINC=NO; ANT-COINC=NO; DET-SYS=(PROP-CNTR'4',CSI'4'); /* '4' To detect alpha particle */ SOLID-ANGL=XMSR'5'; /* '5' Angular resolutions for three detectors were about 0.5 deg, 0.8 deg and 1.7 deg for extreme-forward (20 to 35 deg), forward (30 to 100 deg) and backward (85 to 150 deg) detectors, respectively. */ RCT=12C(ALPHA,ALPHA)12C; RTY=ELA-SCATT; INC-ENGY-LAB=35.5MEV; /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,15; DELTA-INC-ENGY-LAB=1.0MEV'6'; /* '6' Absolute error in beam energy */ SYS-ERR=<10%'7'; /* '7' Maximum uncertainty in target thickness */ STATIST-ERR=<20%'8'; /* '8' Ranged from less than 1% to about 20% depending on the angular position */ INC-ENGY-LAB=35.5MEV; DELTA-THTL=0.2DEG; QVL=0MEV; /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; THTC DSIGMA/DOMEGA DELTA-DSIGMA/DOMEGA'23' (DEG) (MB/SR) (MB/SR) 31.1 111.4 +-1.60 34.3 55.89 +-0.98 37.6 8.48 +-0.40 40.8 2.29 +-0.18 42.1 2.43 +-0.15 44.1 8.03 +-0.31 46.0 15.21 +-0.30 47.2 18.06 +-0.55 48.5 20.58 +-0.41 49.2 21.33 +-0.42 51.0 19.44 +-0.40 52.4 17.23 +-0.59 55.5 9.13 +-0.34 58.6 2.88 +-0.15 59.8 2.46 +-0.14 61.6 3.19 +-0.17 64.8 10.36 +-0.31 67.8 16.84 +-0.40 70.8 21.50 +-0.44 72.0 21.11 +-0.44 73.8 17.58 +-0.43 76.8 11.06 +-0.33 79.7 4.73 +-0.22 81.4 2.03 +-0.15 82.6 1.70 +-0.13 85.2 3.88 +-0.20 88.2 6.54 +-0.27 90.9 7.85 +-0.29 93.8 6.46 +-0.29 96.5 4.23 +-0.22 99.2 1.15 +-0.12 101.8 0.14 +-0.04 103.4 0.52 +-0.08 104.4 0.46 +-0.08 107.0 2.02 +-0.16 109.5 1.96 +-0.18 112.1 1.15 +-0.06 114.4 0.51 +-0.07 115.4 0.11 +-0.02 116.5 0.07 +-0.02 119.2 0.72 +-0.06 121.5 1.77 +-0.10 123.8 2.77 +-0.12 126.9 2.92 +-0.13 128.2 2.43 +-0.11 130.5 1.73 +-0.10 132.6 0.71 +-0.07 133.4 0.56 +-0.07 134.7 0.60 +-0.06 136.8 1.40 +-0.09 138.8 2.39 +-0.13 140.0 3.22 +-0.15 142.8 3.94 +-0.17 144.8 3.81 +-0.16 146.8 2.76 +-0.12 147.8 2.44 +-0.13 148.6 1.79 +-0.12 150.6 0.97 +-0.08 152.4 0.73 +-0.08 153.2 0.90 +-0.09 154.2 0.88 +-0.10 156.0 1.82 +-0.13 \END; /*===================================================================*/ |