/*===================================================================*/ /* NRDF D0218 Data No.2 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,2; D#=D218; TITLE=/EXPERIMENTAL TEST OF ONE-PION EXCHANGE AND PARTIAL CONSERVATION OF AXIAL-VECTOR CURRENT IN PROTON-NUCLEUS CHARGE-EXCHANGE REACTIONS AT 144MEV/; PURPOSE=/WE HAVE MEASURED THE DIFFERENTIAL CROSS SECTIONS OF THE (P,N) REACTION ON 6LI,12C,AND 14N TO THE GROUND STATE OF THE FINAL NUCLEUS (DELTA-J=1, DELTA-I=1,DELTA-P=0). WE TREAT THE NUCLEI AS ELEMENTARY PARTICLES, EXTRACT THE INITIAL-NUCLEUS-PION-FINAL-NUCLEUS COUPLING CONSTANTS, AND COMPARE THEM WITH PREDICTIONS BASED ON THE PARTIAL CONSERVATION OF AXIAL-VECTOR CURRENT HYPOTHESIS./; ATH=(G.L.MOAKE'1',L.J.GUTAY'1',R.P.SCHARENBERG'1',P.T.DEBEVEC'2', P.A.QUIN'3'); INST-ATH=(1USAPUR'1',1USAINU'2',1USAWIS'3'); REF=PRL; VLP=43(1979)910; RCTS=(6LI(P,N)6BE,12C(P,N)12N,14N(P,N)14O); /*===================================================================*/ /* Experimental Conditions */ /*===================================================================*/ \\EXP,2; RCT=12C(P,N)12N; ENR=X%; CHM=X; THK-TGT=[50MG/CM**2; BAC=X; THK-BAC=XMG/CM**2; POL-TGT=NO; ALGN-TGT=NO; ACC=(CYC); INST-ACC=1USAINU; INC-ENGY-LAB=144MEV; DELTA-INC-ENGY=XKEV; ERS-PRJ=XKEV; BEAM-INTNSTY=XUA; POL-PRJ=NO; DET-PARTCL=(N); DET-SYS=(PLST-SCT,TOF,X'1'); /*@3@*/ SOLID-ANGL=XMSR; ERS-DET=XKEV; ANL=(DWIA); PHQ=(XSECTN,ANGL-DSTRN,DSIGMA/DOMEGA); /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,2; INC-ENGY-LAB=144MEV; /*FIG.2-(B)*/ /* D218 FIG 2-(B) */ /* SER#= 1 */ /* XSCALE=LINEAR YSCALE=LOG */ /* XMAX= 2.000E+01 YMAX= 1.000E+02 */ /* XMIN= 0.000E+00 YMIN= 1.000E-01 */ /* FOLLOWING DATA ARE TAKEN FROM GRAPH */ /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; THTC DSIGMA/DOMEGA (DEG) (MB/SR) 0.62 5.31E+00 2.42 5.01E+00 3.67 4.45E+00 4.64 3.96E+00 5.67 3.96E+00 6.92 3.26E+00 8.03 2.78E+00 10.03 2.20E+00 11.21 1.92E+00 15.57 9.13E-01 20.00 4.25E-01 \END; /*===================================================================*/ |