/*===================================================================*/ /* NRDF D1820 Data No.8 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,8; D#=D1820; TITLE=/ Isoscalar giant dipole resonance in 208Pb via inelastic alpha scattering at 400 MeV and nuclear incompressibility /; PURPOSE=/ To investigate isoscalar giant dipole resonance in 208Pb ATH=(M.UCHIDA'1', H.SAKAGUCHI'1', M.ITOH'1', M.YOSOI'1', T.KAWABATA'1', H.TAKEDA'1', Y.YASUDA'1', T.MURAKAMI'1', T.ISHIKAWA'1', T.TAKI'1', N.TSUKAHARA'1', S.TERASHIMA'1', U.GARG'2', M.HEDDEN'2', B.KHARRAJA'2', M.KOSS'2', B.K.NAYAK'2', S.ZHU'2', M.FUJIWARA'3,4', H.FUJIMURA'3', K.HARA'3', E.OBAYASHI'3', H.P.YOSHIDA'3', H.AKIMUNE'5', M.N.HARAKEH'6', M.VOLKERTS'6'); INST-ATH=(2JPNKTO'1', 1USANOT'2', 2JPNRCN'3', 2JPNJAE'4', 2JPNKON'5', 2NEDGRN'6'); /* '1' Department of Physics */ /* '2' Physics Department */ /* '4' Advanced Science Research Center */ /* '5' Department of Physics */ /* '6' Kernfysisch Versneller Instituut */ REF=PL/B; VLP=557(2003)12; /* Secondary reference - Uchida, Thesis(2003) RCTS=208PB(ALPHA,ALPHA)208PB; PHQS=(ENGY-SPEC, ANGL-DSTRN'7', STRGTH-FUNCT'8', STRGTH-FUNCT'9', STRGTH-FUNCT'10', STRGTH-FUNCT'11', EWSR); /* '7' Double differential cross section (dsigma/dOmega/dE) for fixed E */ /* '8' Strength distribution for T=0, L=0 transitions, ISGMR */ /* '9' Strength distribution for T=0, L=1 transitions, ISGDR */ /* '10' Strength distribution for T=0, L=2 transitions, ISGQR */ /* '11' Strength distribution for T=0, L=3 transitions, HERO */ /*===================================================================*/ /* Experimental Conditions */ /*===================================================================*/ \\EXP,8; /* 2003-07-26 : Compiled, Im + Am */ RTY=INEL-SCATT; ENR=X%; CHM=ELM; PHYS-FORM=SLD; THK-TGT=10.1MG/CM**2; BAC=SELF; POL-TGT=0%; ALGN-TGT=0%; ACC=CYC'12'; /* '12' RCNP ring cyclotron */ INST-ACC=2JPNRCN; INC-ENGY-LAB=386MEV'13'; /* '13' Reference gives 400 MeV but correct value is 386 MeV (private communication with H.Sakaguchi (2003.12.17)). */ CHRG-INC-ION=2; POL-PRJ=0%; DET-PARTCL=ALPHA; COINC=NO; ANT-COINC=NO; DET-SYS=(MAG'14',MWDC'15',SCT'15'); /* '14' To momentum-analyze inelastically scattered particles with the high resolution magnetic spectrometer Grand Raiden [M. Fujiwara et al., Nucl. Instrum. Methods. Phys. Res. A422(1999)484] */ /* '15' Focal-plane detection system consisted of two MWDC [T. Noro, et al., RCNP Annual Report (1991) 177] and two plastic scintillation counters */ ERS-DET=200KEV'16'; /* '16' Typical value (FWHM) */ CALB-DET=/ Energy scale was calibrated using elastic and inelastic scattering of alpha-particles from 12C (g.s., 4.439, 7.641 and 9.41 MeV states) under the same magnetic-field conditions as those in the measurements for 208Pb. /; ANL=DWBA'17'; /* '17' Multipole decomposition analysis (MDA) was used analysis of giant-resonance data. The angular distribution was fitted with the superposition of multipolarity, with calculated DWBA cross sections. */ /* Experimental Method: - Ray-tracking technique RCT=208PB(ALPHA,ALPHA)208PB; PHQ=EWSR; /* Analysis: - Multipole deconposition analysis (MDA) was used analysis of giant-resonance data. The angular distribution was fitted with the superposition of multipolarity, with calculated DWBA cross sections. - Fitting of strength function /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,8; INC-ENGY-LAB=386MEV'18'; /* '18' Reference gives 400 MeV but correct value is 386 MeV (private communication with H.Sakaguchi (2003.12.17)). */ /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; EXC-ENGY DELTA-EXC-ENGY WDTH DELTA-WDTH EWSR DELTA-EWSR FLAG'38' (MEV) (MEV) (MEV) (MEV) (%) (%) (NODIM) 13.5 +-0.2 3.6 +-0.4 76 +-4 1 13.5 +-0.2 4.2 +-0.3 58 +-3 2 12.7 +-0.2 3.5 +-0.4 28 +-1 3 12.5 +-0.3 4.4 +-0.5 21 +-1 4 23.0 +-0.3 10.3 +-0.1 117 +-3 3 22.5 +-0.3 10.9 +-0.9 107 +-7 4 \END; /*===================================================================*/ |