/*===================================================================*/ /* NRDF D0182 Data No.2 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,2; D#=D182; TITLE=/DIFFERENTIAL CROSS SECTION FOR PROTON-PROTON BREMSSTRAHLUNG AT 1.38 GEV/C/; PURPOSE=/WE REPORT FINAL RESULTS AND THE EXPERIMENTAL DETAILS OF THE FIRST INVESTIGATION AT MEDIUM ENERGY OF PROTON-PROTON BREMSSTRAHLUNG(PPGAMMA) . THE INCIDENT PROTON ENERGY IS WELL ABOVE THE INELASTIC THRESHOLD IN PP INTERACTIONS AND IS SUBSTANTIALLY HIGHER THAN THE ENERGIES OF ALL PREVIOUS PPGAMMA EXPERIMENTS. AN IMPORTANT OBJECTIVE OF OUR EXPERIMENT IS TO TEST THE RANGE OF VALIDITY OF THE SOFT PHOTON APPROXIMATION BASED ON THE LOW AND BURNETT-KROLL THEOREMS AND THAT OF THE EXTERNAL EMISSION DOMINANCE APPROXIMATION WHICH IS EQUIVALENT TO THE FIRST TERM OF THE SOFT PHOTON APPROXIMATION EXPANSION./; ATH=(B.M.K.NEFKENS'1',O.R.SANDER'1',D.I.SOBER'1,2',H.W.FEARING'3'); INST-ATH=(1USACLA'1',1USACUA'2',1CANUBC'3'); REF=PR/C; VLP=19(1979)877; RCTS=(P(P,P)P,P(P,P,GAMMA)P); /*===================================================================*/ /* Experimental Conditions */ /*===================================================================*/ \\EXP,2; RCT=P(P,P,GAMMA)P; ENR=NAT; CHM=ELM; THK-TGT=XMG/CM**2; /*@3@*/ BAC=X; THK-BAC=XMG/CM**2; /*@4@*/ POL-TGT=NO; ALGN-TGT=NO; ACC=(CYC); INST-ACC=1USALBL; INC-ENGY-LAB-RANGE=(730MEV); DELTA-INC-ENGY=8000KEV; ERS-PRJ=2%; BEAM-INTNSTY=XUA'1'; /*@5@*/ POL-PRJ=NO; DET-PARTCL=(GAMMA,P); DET-SYS=(MAG+X'2',X'1'); /*@6@*/ /*@7@*/ /*@8@*/ SOLID-ANGL=XMSR; ERS-DET=XKEV; /*@9@*/ ANL=(X'1'); /*@8@*/ PHQ=(XSECTN,ANGL-DSTRN,DSIGMA/DOMEGA,DSIGMA/DOMEGA/DOMEGA/DE); /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,2; /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; DATA1'1' DATA2'2' DSIGMA/DOMEGA-P/DOMEGA-GAMMA/DE-GAMMA DELTA-DSIGMA/ DOMEGA-P/DOMEGA-GAMMA/DE-GAMMA (NDOIM) (MEV) (NB/SR**2/MEV) (NB/SR**2/MEV) 1 15[25 7.6 1.4 1 25[35 4.6 1.0 1 35[45 5.1 1.1 1 45[55 3.9 0.9 1 55[65 5.1 1.0 1 65[75 5.9 1.4 1 75[85 4.2 1.5 2 15[25 8.5 1.5 2 25[35 6.3 1.2 2 35[45 4.0 0.9 2 45[55 2.7 0.8 2 55[65 2.8 0.8 2 65[75 3.8 1.1 2 75[85 4.2 1.7 3 15[25 4.9 1.0 3 25[35 3.8 0.9 3 35[45 3.9 0.9 3 45[55 1.5 0.6 3 55[65 3.6 0.9 3 65[75 2.7 0.9 3 75[85 2.3 1.1 4 15[25 8.2 1.4 4 25[35 7.2 1.3 4 35[45 6.5 1.2 4 45[55 3.3 0.8 4 55[65 2.5 0.7 4 65[75 4.0 0.9 4 75[85 4.8 1.1 4 85[105 4.1 0.8 5 15[25 8.9 1.5 5 25[35 9.2 1.4 5 35[45 6.1 1.1 5 45[55 5.6 1.1 5 55[65 4.2 0.9 5 65[75 3.0 0.8 5 75[85 4.1 1.0 5 85[105 3.2 0.8 6 15[25 7.8 1.4 6 25[35 5.4 1.1 6 35[45 4.1 0.9 6 45[55 4.6 1.0 6 55[65 3.0 0.8 6 65[75 3.1 0.8 6 75[85 4.5 1.1 6 85[105 5.1 1.0 7 25[35 6.3 1.2 7 35[45 3.8 0.9 7 45[55 4.5 1.0 7 55[65 3.7 0.9 7 65[75 3.8 0.9 7 75[85 4.2 0.9 7 85[105 4.3 0.7 7 105[125 6.3 1.0 7 125[145 8.9 1.5 8 25[35 8.9 1.5 8 25[35 6.7 1.2 8 45[55 5.5 1.1 8 55[65 2.6 0.7 8 65[75 3.9 0.9 8 75[85 4.1 0.9 8 85[105 3.3 0.6 8 105[125 5.4 0.8 8 125[145 7.1 1.1 9 25[35 6.7 1.2 9 35[45 5.4 1.1 9 45[55 2.1 0.7 9 55[65 3.9 0.9 9 65[75 2.8 0.8 9 75[85 3.1 0.8 9 85[105 4.2 0.7 9 105[125 5.0 1.0 9 125[145 7.1 1.6 10 25[35 2.9 0.9 10 35[45 2.1 0.8 10 45[55 3.1 0.9 10 55[65 2.8 0.9 10 65[75 1.5 0.7 10 75[85 2.5 0.8 10 85[105 2.7 0.6 10 105[125 3.0 0.6 10 125[145 5.4 1.0 10 145[165 6.0 1.2 11 35[45 6.1 1.4 11 45[55 5.8 1.3 11 55[65 4.5 1.2 11 65[75 5.2 1.2 11 75[85 3.7 1.1 11 85[1105 3.7 0.7 11 105[125 5.7 0.5 11 125[145 7.0 1.0 11 145[165 7.3 1.1 11 165[185 9.4 1.5 11 185[205 8.0 1.8 12 35[45 3.8 1.0 12 45[55 4.5 1.1 12 55[65 4.2 1.0 12 65[75 2.3 0.8 12 75[85 5.1 1.1 12 85[105 2.5 0.6 12 105[125 2.5 0.6 12 125[145 3.5 0.7 12 145[165 5.4 0.9 12 165[185 2.3 0.6 12 185[205 4.2 1.2 13 15[25 11.2 1.7 13 25[35 5.6 1.1 13 35[45 3.9 0.9 13 45[55 2.5 0.8 13 55[65 2.2 1.0 14 15[25 8.1 1.3 14 25[35 6.8 1.2 14 35[45 4.2 0.9 14 45[55 3.6 0.9 14 55.65 3.2 1.3 15 15[25 10.0 1.5 15 25[35 6.7 1.2 15 35[45 5.0 1.0 15 45[55 3.1 1.1 16 15[25 8.2 1.4 16 25[35 4.6 1.0 16 35[45 3.7 1.0 \END; /*===================================================================*/ |