/*===================================================================*/ /* NRDF D0221 Data No.1 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,1; D#=D221; TITLE=/CROSS SECTIONS FOR THE 26MG(P,N)26AL(GROUND,7.3E+5 YEAR) AND 26MG(P,N)26AL(METASTABLE,6.35 SEC) REACTIONS/; PURPOSE=/WE REPORT THE RESULTS OF AN EXPERIMENTAL INVESTIGATION OF THE CROSS SECTION FOR 26MG(P,N)26AL-M1 OVER THE RANGE OF PROTON ENERGIES OF INTEREST IN NUCLEOSYNTHESIS. CALCULATIONS OF THE CROSS SECTIONS FOR BOTH THE 26MG(P,N)26AL-M1 AND 26MG(P,N)26AL REACTIONS ARE CALCULATED, ACCORDING TO THE STATISTICAL THEORY OF NUCLEAR REACTIONS FOLLOWING THE PRESCRIPTION OF WOOSLEY ET AL. WHO HAVE PRODUCED EXTENSIVE TABLES OF THERMONUCLEAR REACTION RATE DATA INCLUDING CROSS SECTIONS FOR INTERMEDIATE MASS NUCLEI. BY COMPARISON OF THE THEORETICAL CROSS SECTIONS WITH OUR EXPERIMENTAL RESULTS AS WELL AS MEASUREMENTS AT 6 AND 8MEV FOR 26MG(P,N)26AL BY FURUKAWA ET AL., NUCL.PHYS.A174,539(1971)./; /*@10@*/ ATH=(J.D.KING'1',C.W.CHENG'1'); INST-ATH=(1CANTOR'1'); REF=CJP; VLP=57(1979)286; RCTS=(26MG(P,N)26AL); /*===================================================================*/ /* Experimental Conditions */ /*===================================================================*/ \\EXP,1; RCT=26MG(P,N)26AL; ENR=99.46%; CHM=ELM; THK-TGT=4.00+-0.40MG/CM**2; BAC=TA; THK-BAC=0.25MM; POL-TGT=NO; ALGN-TGT=NO; ACC=(VDG); INST-ACC=1CANMCM; INC-ENGY-RANGE=5.0MEV(XMEV)9.5MEV; DELTA-INC-ENGY=XKEV; ERS-PRJ=XKEV; BEAM-INTNSTY=XUA; POL-PRJ=NO; RCT=26MG(P,N)26AL; ENR=NAT; CHM=ELM; THK-TGT=XMG/CM**2; BAC=AL; THK-BAC=3.90+-0.30MG/CM**2; POL-TGT=NO; ALGN-TGT=NO; DET-PARTCL=(GAMMA,BETA); DET-SYS=(NAI(TL)'5'); /*@5@*/ ANL=(OPT-MODEL'3',STATIST-MODEL'4'); /*@3@*/ /*@4@*/ PHQ=(XSECTN-LEVEL,LIFE,SPIN); /*@6@*/ /*@7@*/ /*@9@*/ /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,1; CMPD=27AL; RSD=26AL; EXC-ENGY=0.228MEV; J-PI=0+; QVL=-5.02MEV; HALF-LIFE=6.35SEC; /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; INC-ENGY-LAB INC-ENGY-CM SIGMA DELTA-SIGMA (MEV) (MEV) (MB) (MB) 5.0 4.80 X X'8' 5.25 5.04 0.98 0.09 5.35 5.14 29.8 2.7 5.5 5.28 12.7 1.2 5.6 5.38 46.6 4.3 5.7 5.48 57.6 5.3 5.75 5.52 45.0 4.1 5.9 5.67 20.1 1.8 6.0 5.77 32.2 3.0 6.1 5.86 13.3 1.2 6.25 6.01 22.6 2.1 6.4 6.15 67.6 6.2 6.5 6.25 34.7 3.2 6.6 6.34 46.2 4.3 6.75 6.49 26.5 2.4 6.9 6.63 69.6 6.4 7.0 6.73 52.3 4.8 7.1 6.83 50.8 4.7 7.2 6.92 55.7 5.1 7.25 6.97 74.8 6.9 7.5 7.21 117 11 7.75 7.45 169 16 8.0 7.69 210 19 8.25 7.93 208 19 8.5 8.17 201 18 8.75 8.42 197 18 9.0 8.66 193 18 9.25 8.90 228 21 9.5 9.14 220 20 \END; /*===================================================================*/ |