/*===================================================================*/ /* NRDF D1885 Data No.2 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,2; D#=D1885; TITLE=/ Half-life of 228Pu and alpha decay of 228Np /; PURPOSE=/ To determine evaporation residue cross sections for 228Pu, 228Np, and 225U /; ATH=(K.NISHIO'1', H.IKEZOE'1', S.MITSUOKA'1', K.SATOU'1', C.J.LIN'1, 2'); INST-ATH=(2JPNJAE'1', 3CPRAEP'2'); /* '1' Advanced Science Research Center */ REF=PR/C; VLP=68(2003)064305; RCTS=(198PT(34S,4*N)228PU, 198PT(34S,3*N,P)228NP, 198PT(34S,3*N,ALPHA)225U); PHQS=(XSECTN, HALF-LIFE); /*===================================================================*/ /* Experimental Conditions */ /*===================================================================*/ \\EXP,2; /* 2004-04-13 : Compiled, Kc + On */ ENR=98%; CHM=ELM; PHYS-FORM=SLD; THK-TGT=0.39MG/CM**2; BAC=AL; THK-BAC=XMG/CM**2'3'; /* '3' 1.2 micro-meter thick foil */ POL-TGT=0%; ALGN-TGT=0%; ACC=VDGT; INST-ACC=2JPNJAE; INC-ENGY-CM=141[143MEV'4'; /* '4' Energy at the half depth of the target layer determined by calculating the energy loss of beam in the Al foil and target BEAM-INTNSTY=40[50PNA; POL-PRJ=0%; COINC=NO; ANT-COINC=NO; DET-SYS=(MAG'5',SI'6'); /* '5' JAERI Recoil Mass Separator used to separate evaporation residue from the primary beams and other reaction products. */ /* '6' Double-sided position-sensitive silicon detector (73x55 mm**2) to construct alpha-decay chain. Typical energy resolution of PSD for alpha particle from an 241Am source. */ /* Related references - R.B.Firestone, FIRESTONE, (1996). (Kinetic energy of alpha particles and half-life of this literature are tabulated for other than 228Np.) - S.A.Kreek et al., PR/C, 50(1994)2288. (Kinetic energy of alpha particles and half-life of this literature are tabulated for 228Np.) RCT=198PT(34S,3*N,P)228NP; PHQ=XSECTN; DET-PARTCL=(ALPHA'13',ALPHA'14',ALPHA'15',ALPHA'16',ALPHA'17'); /* '13' Alpha from 228Np */ /* '14' Alpha from 224Pa */ /* '15' Alpha from 220Ac */ /* '16' Alpha from 216Fr */ /* '17' Alpha from 212At (ground state) */ /* Comment to data: T1/2 (228Np) = 56+45-17 sec is determined by authors. */ /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,2; RSD=228NP; /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; INC-ENGY-CM XSECTN XSECTN-MAX'18' DELTA-XSECTN (MEV) (NB) (NB) (NB) 141.0 X 1.234 +X-X 143.0 6.083 X +3.937-2.721 \END; /*===================================================================*/ |