/*===================================================================*/ /* NRDF D1782 Data No.2 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,2; D#=D1782; TITLE=/ Large collectivity of 34Mg /; PURPOSE=/ The measurement of B(E2) for the very neutron-rich nucleus 34Mg /; ATH=(H.IWASAKI'1', T.MOTOBAYASHI'2', H.SAKURAI'3', K.YONEDA'4', T.GOMI'2', N.AOI'3', N.FUKUDA'4', ZS.FULOP'5', U.FUTAKAMI'2', Z.GACSI'5', Y.HIGURASHI'2', N.IMAI'3', N.IWASA'6', T.KUBO'4', M.KUNIBU'2', M.KUROKAWA'1', Z.LIU'7', T.MINEMURA'4', A.SAITO'2', M.SERATA'2', S.SHIMOURA'1', S.TAKEUCHI'2', Y.X.WATANABE'4', K.YAMADA'2', Y.YANAGISAWA'4', M.ISHIHARA'4'); INST-ATH=(2JPNTOK'1', 2JPNRIK'2', 2JPNTOK'3', 2JPNIPC'4', 3HUNDEB'5', 2JPNTOH'6', 3CPRIMP'7'); /* '1' Center for Nuclear Study (CNS) */ /* '2' Department of Physics */ /* '3' Department of Physics */ /* '6' Department of Physics */ REF=PL/B; VLP=522(2001)227; RCTS=(PB(34MG,34MG)PB, PB(32MG,32MG)PB, C(34MG,34MG)C); PHQS=(XSECTN'8', DEFM-PARA, TRNSN-STRGTH'9'); /* '8' The effective angle-integrated cross section */ /* '9' B(E2) */ /*===================================================================*/ /* Experimental Conditions */ /*===================================================================*/ \\EXP,2; /* 2004-03-16 : Compiled, Am + Sk */ RTY=INEL-SCATT; ENR=X%; CHM=ELM; PHYS-FORM=SLD; POL-TGT=0%; ALGN-TGT=0%; ACC=(CYC'10',PRJFS'11'); /* '10' To accelerate 40Ar primary beam on 9Be target */ /* '11' RIPS facility [T. Kubo et al., Nucl. Instrum. Methods B70(1992)309]] */ INST-ACC=(2JPNIPC'10',2JPNIPC'11'); POL-PRJ=0%; ANT-COINC=NO; DET-SYS=(CNTR-TLSCP'12',NAI'13',SCT,EDE'14'); /* '12' To identify scattered particle, consists of 4 layers of ionimplanted silicon detectors, covered laboratory angles up to 6.0 degrees, efficiency is around 90% at laboratory scattering angles of less than 3.0 degrees, while it gradually decreases to about 30% at 6.0 degrees. */ /* '13' To measure de-excitation gamma-rays energy (resolution was typically 9.1% (FWHM) for the 662 keV gamma-ray as measured with the 137Cs source), Around 90% at laboratory scattering angles of less than 3.0 degrees, while it gradually decreases to about 30% at 6.0 degrees. The total photo-peak efficiency was calculated to be 23.9% for a 656 keV gamma-ray emitted from a 34Mg nucleus in flight. The energy and efficiency calibrations of each NaI(Tl) detector were made by using standard 22Na, 60Co, 88Y, and 137Cs sources. */ /* '14' Isotopic identification of the scattered particles */ ERS-DET=9.1%; /* Experimental Method: - Particle identification by 'E/Delta E' measurement (Isotopic identification of the scattered particles) RCT=PB(34MG,34MG)PB; PHQ=DEFM-PARA; THK-TGT=693MG/CM**2; INC-ENGY-LAB=44.9MEV/A; BEAM-INTNSTY=XNA'20'; /* '20' Typical intensity of 4 counts per second */ DET-PARTCL=(GAMMA'21',34MG); /* '21' Prompt gamma from 34Mg */ COINC=(GAMMA,34MG); ANL=MONTE-MTHD'22'; /* '22' Monte Carlo shell model */ /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,2; EMT-2=GAMMA'23'; /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; INC-ENGY-LAB DEFM-PARA-2 DELTA-DEFM-PARA-2 (MEV/A) (NODIM) (NODIM) 44.9 0.57 +-0.06 \END; /*===================================================================*/ |