/*===================================================================*/ /* NRDF D1591 Data No.5 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,5; D#=D1591; TITLE=/ 4He(4He,3He)5He(g.s.) reaction at 118 MeV, and its distorted wave Born approximation interpretation /; PURPOSE=/ To measure the 4He(4He,3He)5He(g.s.) reaction at 118 MeV. ATH=(R.E.WARNER'1', J.M.FETTER'1', R.A.SWARTZ'1', A.OKIHANA'2', T.KONISHI'2', T.YOSHIMURA'2', P.D.KUNZ'3', M.FUJIWARA'4', K.FUKUNAGA'5', S.KAKIGI'5', T.HAYASHI'5', J.KASAGI'6', N.KOORI'7'); INST-ATH=(1USAOBR'1', 2JPNKUE'2', 1USACLU'3', 2JPNRCN'4', 2JPNKTO'5', 2JPNTOH'6', 2JPNTKS'7'); /* '5' Institute for Chemical Research */ /* '6' Laboratory of Nuclear Science */ REF=PR/C; VLP=49(1994)1534; RCTS=(ALPHA(ALPHA,ALPHA)ALPHA, ALPHA(ALPHA,3HE)5HE); PHQS=(ANGL-DSTRN, ENGY-SPEC, ANGL-DSTRN'8', OPT-POTL-PARA); /* '8' Integrated over the 3He laboratory energy range in which 0 < alpha-neutron relative energy in 5He < 5 MeV for central rays */ /*===================================================================*/ /* Experimental Conditions */ /*===================================================================*/ \\EXP,5; /* 2005-09-30 : Altered, At + Ot + Sr. Re-digitized */ /* 2005-11-01 : Converted, Sr + On. Converted to EXFOR E1591 */ CHM=ELM; PHYS-FORM=GAS; THK-TGT=XMG/CM**2'9'; /* '9' 3.05+-0.05 atmospheres absolute pressure */ POL-TGT=0%; ALGN-TGT=0%; ACC=CYC'10'; /* '10' Isochronous cyclotron, AVF cyclotron */ INST-ACC=2JPNRCN; INC-ENGY-LAB=118MEV'11'; /* '11' 4He was bombarded with 118.7 MeV alpha particles. The energy was reduced to 118.0 MeV at target center. */ BEAM-INTNSTY=2[8NA; POL-PRJ=0%; COINC=NO; ANT-COINC=NO; DET-SYS=EDE'12'; /* '12' To separate 4He, 3He, and Z=1 groups */ /* Experimental Method: - Particle identification by 'E/Delta E' measurement (To separate 4He, 3He, and Z=1 groups) RCT=ALPHA(ALPHA,3HE)5HE; RTY=STRP; PHQ=ANGL-DSTRN'25'; /* '25' Integrated over the 3He laboratory energy range in which 0 < alpha-neutron relative energy in 5He < 5 MeV for central rays */ DET-PARTCL=3HE; DET-SYS=SI'26'; /* '26' To detect 3He */ ANL=DWBA'27'; /* '27' The program DWUCK4 [P.D.Kunz, computer code DWUCK4 (unpublished)] with some modification */ /* Analysis: - Integration of energy distribution (Integrated over the 3He laboratory energy range in which 0 < E(alpha-n) < 5 MeV for central rays) /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,5; INC-ENGY-LAB=118MEV; SYS-ERR=10%'28'; /* '28' Total systematic error. Accuracy in normalization. Renormalization against the alpha-alpha elastic cross sections removes several possible errors: beam charge integration, gas pressure determination, solid-angle uncertainty and dead time STATIST-ERR=X%'29'; /* '29' Statistical uncertainties are always smaller than normalization accuracy (+-10%) */ EMT=3HE; EXC-ENGY=0MEV; /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; THTC DELTA-THTC DSIGMA/DOMEGA DELTA-DSIGMA/DOMEGA FLAG'30' (DEG) (DEG) (MB/SR) (MB/SR) (NODIM) 29.7 +-0.9 5.35 +-0.05 1. 39.6 +-0.9 4.58 +-0.04 1. 49.6 +-1.0 3.21 +-0.03 1. 49.6 +-1.0 3.09 +-0.05 2. 59.5 +-1.1 1.49 +-0.02 1. 59.5 +-1.1 1.42 +-0.03 2. 64.4 +-1.0 1.05 +-0.01 1. 69.4 +-1.2 0.90 +-0.01 1. 69.4 +-1.2 0.88 +-0.02 2. 74.5 +-1.1 0.69 +-0.01 1. 79.5 +-1.3 0.50 +-0.01 1. 79.5 +-1.3 0.48 +-0.01 2. 84.5 +-1.3 0.29 +-0.01 1. 84.5 +-1.3 0.32 +-0.01 2. 89.6 +-1.4 0.22 +-0.01 2. 94.4 +-1.5 0.30 +-0.01 2. 99.3 +-1.6 0.48 +-0.01 2. 104.1 +-1.7 0.69 +-0.01 2. 118.5 +-1.9 1.26 +-0.02 2. \END; /*===================================================================*/ |