/*===================================================================*/ /* NRDF D0212 Data No.11 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,11; D#=D212; TITLE=/THRESHOLD EFFECTS IN PROTON-INDUCED REACTIONS ON COPPER/; PURPOSE=/THE BEHAVIOR OF NUCLEAR REACTION CROSS SECTIONS NEAR THRESHOLDS IS AN ESPECIALLY SENSITIVE TEST OF ABILITY OF THE HAUSER-FESHBACH STATISTICAL MODEL TO PREDICT THE ENERGY DEPENDENCE OF REACTION CROSS SECTIONS. THERE SHOLD BE A DROP IN CROSS SECTION (WIGNER CUSP) FOR ALREADY OPEN CHANNELS WHEN A NEW CHANNEL OPENS. THESE CUSPS MIGHT BE MOST READILY OBSERVED IN THE VICINITY OF S-WAVE NEUTRON THRESHOLDS./; /*@3@*/ ATH=(Z.E.SWITKOWSKI'1',J.C.P.HEGGIE'1',F.M.MANN'2'); INST-ATH=(3AULAML'1',1USAHED'2'); REF=AUJ; VLP=31(1978)253; RCTS=(65CU(P,N)65ZN, 63CU(P,N)63ZN, 65CU(P,GAMMA)65ZN, 63CU(P,GAMMA)64ZN,65CU(P,ALPHA)62NI,63CU(P,ALPHA)60NI); /*===================================================================*/ /* Experimental Conditions */ /*===================================================================*/ \\EXP,11; /* 2007-03-05 N.OTUKA: ATH and INST-ATH corrected */ ACC=(X'1'); /*@5@*/ INST-ACC=3AULAML; INC-ENGY-LAB-RANGE=1.2MEV(0.1MEV)3.3MEV; INC-ENGY-RANGE=1.2MEV(0.05MEV)1.8MEV; BEAM-INTNSTY=0.2[0.5UA; POL-PRJ=NO; RCT=X(P,ALPHA)X; ENR=X%'1'; /*@6@*/ CHM=ELM; THK-TGT=0.320MG/CM**2; BAC=SELF; INC-ENGY-LAB-RANGE=1.5MEV(0.1MEV)4.6MEV'1'; /*@8@*/ ERS-PRJ=XKEV'1'; /*@9@*/ BEAM-INTNSTY=0.3UA; /*@10@*/ DET-PARTCL=(P,ALPHA); DET-SYS=(SI'1'); /*@7@*/ /*@11@*/ ANL=(OPT-MODEL,STATIST-MODEL'4',X'1'); /*@19@*/ /*@24@*/ PHQ=(EXC-FUNCT,ANGL-DSTRN'2',XSECTN-LEVEL'2',OPT-POTL-PARA); /*@20@*/ /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,11; PRJ=ALPHA; TGT=(60NI,62NI); POTL-FORM=/-(V*F(XR)+I*(WV*F(XIV)-4*WS*DIF(1!XIS)F(XIS)+WG*G(XIG)))+ (HBAR/(MPI*C)**2*1/R*(VSO*DIF(1!R)F(XRSO)+I*WSO*DIF(1!R) F(XISO))*SIGMA*L+UC(R): F(XI)=1/(1+EXP(-XI)): G(XG)=EXP(-XG**2): XI=(R-RI*A**(1/3))/AI: UNIFORM CHARGE OF RAIDUS RC*A**(1/3):/; /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; V RR AR WV RIV AIV WS RIS AIS RC (MEV) (FM) (FM) (MEV) (FM) (FM) (MEV) (FM) (FM) (FM) 185 1.40 0.52 25.0 1.40'2' 0.52 0.0 0.0 0.0 1.40'5' \END; /*===================================================================*/ |