/*===================================================================*/ /* NRDF D0160 Data No.2 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,2; D#=D160; TITLE=/THE MAGNETIC MOMENT OF THE SECOND EXCITED STATE IN 26AL/; PURPOSE=/THE MAGNETIC MOMENT OF THE 3+ SECOND EXCITED STATE AT 417 KEV IN 26AL CAN BE MEASURED BY THE NEW METHOD/; ATH=(M.AKIBA'1',T.HOTTORI'1',K.HISATAKE'1'); INST-ATH=(2JPNTIT'1'); REF=JPJ; VLP=40(1976)307; RCTS=(25MG(P,GAMMA)26AL,27AL(P,GAMMA)28SI); /* IN THIS PAPER WE PROPOSE A NEW METHOD FOR MAGNETIC MOMENT MEASUREMENT OF A SHORT-LIVED LEVEL POPULATED BY A NUCLEAR REACTION. THIS METHOD IS ESSENTIALLY THE MODIFICATION OF A TIME INTEGRAL PERTURBED ANGULAR DISTRIBUTION OF EMITTED GAMMA-VAYS. PRELIMINARY RESULTS OF THIS STUDY WAS ALREADY REPORTED IN SHORT NOTE; J.PHYS.SOC.JAPAN 37(1974)562.*/ /*===================================================================*/ /* Experimental Conditions */ /*===================================================================*/ \\EXP,2; RCT=25MG(P,GAMMA)26AL; ENR=X%; CHM=25MG.O; THK-TGT=0.050MG/CM**2; BAC=GOLD-FOIL; THK-BAC=XMG/CM**2; POL-TGT=NO; ALGN-TGT=NO; ACC=(VDG); INST-ACC=2JPNTIT; INC-ENGY-RANGE=(956KEV); BEAM-INTNSTY=8[12UA; POL-PRJ=NO; DET-PARTCL=(GAMMA); DET-SYS=(MAG+GE(LI),PLST-SCT'3'); /* '3'USED FOR THE LIFE-TIME MEASUREMENT*/ ANL=(SHELL-MODEL,NILS-MODEL); PHQ=(ANGL-DSTRN'1',XSECTN-LEVEL,LIFE,G-FCTR); /* '1'THE ANGULAR DISTRIBUTIONS OF GAMMA RAYS WERE FIT TO THE FUNCTION W(THETA)=1+A2P2(X)+A4P4(X),X=COS(THETA-ALPHA) BY THE LEAST SQUARES METHOD. THE LARMOR PRECESSION ANGLE ?THETA IS GIVEN BY THE DIFFERENCE OF THE ALPHA VALUE OF EACH GAMMA RAY */ /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,2; INC-ENGY=0.956MEV; EXC-ENGY=2.067MEV; J-PI=4+; /* ANGULAR DISTRIBUTIONS OF THE 1650KEV GAMMA-RAY FROM THE 2067KEV 4+ STATE TO THE 417KEV 3+ STATE */ /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; LEGD-COEF DATA DELTA-DATA FLAG (NODIM) (ARB) (ARB) (NODIM) A2 0.314 0.012 '1' A2 0.314 0.005 '2' A4 0.155 0.011 '1' A4 0.155 0.006 '2' \END; /*===================================================================*/ |