/*===================================================================*/ /* NRDF D1945 Data No.7 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,7; 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,7; /* 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=30.0MEV; /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,7; 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=30.0MEV; DELTA-THTL=0.2DEG; QVL=0MEV; /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; THTC DSIGMA/DOMEGA DELTA-DSIGMA/DOMEGA'15' (DEG) (MB/SR) (MB/SR) 26.5 238.6 +-2.00 29.8 242.4 +-2.03 32.5 180.3 +-1.74 33.1 164.9 +-1.68 39.6 27.40 +-0.70 42.7 27.77 +-0.59 46.0 39.57 +-0.67 49.2 44.06 +-0.62 52.4 32.50 +-0.53 55.5 16.68 +-0.37 58.6 12.47 +-0.33 59.8 11.75 +-0.32 61.6 11.72 +-0.32 62.3 12.74 +-0.33 64.8 13.12 +-0.35 66.0 15.80 +-0.37 67.8 13.77 +-0.21 68.4 14.38 +-0.36 69.6 14.19 +-0.36 70.8 12.43 +-0.34 72.0 12.64 +-0.36 73.8 14.58 +-0.37 74.4 15.50 +-0.38 76.8 19.40 +-0.43 79.7 23.82 +-0.49 82.6 25.96 +-0.53 85.2 22.36 +-0.48 88.2 17.59 +-0.43 90.9 10.30 +-0.43 93.8 8.83 +-0.31 96.5 13.38 +-0.39 99.2 20.16 +-0.49 101.8 25.94 +-0.56 104.4 28.43 +-0.61 107.0 23.67 +-0.56 109.5 16.85 +-0.48 114.4 5.54 +-0.30 \END; /*===================================================================*/ |