/*===================================================================*/ /* NRDF D1902 Data No.2 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,2; D#=D1902; TITLE=/ One- and two-proton removal from 15O /; ATH=(H.JEPPESEN'1,2', R.KANUNGO'1', B.ABU-IBRAHIM'3', S.ADHIKARI'4,5', M.CHIBA'1', D.FANG'1', N.IWASA'6', K.KIMURA'7', K.MAEDA'6', S.NISHIMURA'1', T.OHNISHI'1', A.OZAWA'1', C.SAMANTA'4,5', T.SUDA'1', T.SUZUKI'8', I.TANIHATA'1', Q.WANG'9', C.WU'1', Y.YAMAGUCHI'8', K.YAMADA'1', A.YOSHIDA'1', T.ZHENG'1,9'); INST-ATH=(2JPNIPC'1', 2DENAAU'2', 3EGYEGY'3', 1USAUSA'4', 3INDSAH'5', 2JPNTOH'6', 2JPNNIA'7', 2JPNNII'8', 3CPRBJG'9'); /* '2' Department of Physics and Astronomy */ /* '3' Department of Physics, Cairo University */ /* '4' Physics Department, Virginia Commonwealth University */ /* '6' Department of Physics */ /* '7' Department of Electric, Electronics and Computer Engineering */ /* '8' Department of Physics */ /* '9' Department of Technical Physics */ REF=NP/A; VLP=739(2004)57; RCTS=(9BE(15O,14N)X, 9BE(15O,13C)X); PHQS=(MOM-DSTRN, XSECTN'10', XSECTN'11'); /* '10' one-proton removal cross section */ /* '11' two-proton removal cross section */ /*===================================================================*/ /* Experimental Conditions */ /*===================================================================*/ \\EXP,2; /* 2004-11-27 : Compiled, Kc + Am + On */ ENR=X%; CHM=ELM; PHYS-FORM=SLD; THK-TGT=XMG/CM**2'12'; /* '12' A 0.5 mm thick target */ BAC=X; POL-TGT=0%; ALGN-TGT=0%; ACC=(CYC'13',PRJFS'14'); /* '13' 15O secondary beam was produced by the fragmentation of a 20Ne primary beam incident on a 0.5 mm Be production target. /* '14' RIKEN projectile fragment separator (RIPS) */ INST-ACC=(2JPNIPC'13',2JPNIPC'14'); POL-PRJ=0%; COINC=NO; ANT-COINC=NO; DET-SYS=(PPAC,SCT'15',IC'16',NAI'17',TOF'18'); /* '15' To measure ToF for momentum distribution and fragment identification */ /* '16' To measure energy loss for charge identification */ /* '17' To measure total energy for mass identification */ /* '18' To measure momentum distribution and fragment identification using newly developed TOF technique [R.Kanungo, et al., Phys. Rev. Lett. 88(2002)142502] */ /* Experimental Method: - Time-of-flight (To measure momentum distribution and fragment identification using newly developed TOF technique [R.Kanungo, et al., Phys. Rev. Lett. 88(2002)142502]) RCT=9BE(15O,13C)X; PHQ=MOM-DSTRN; INC-ENGY-LAB=56MEV/A; DET-PARTCL=13C; ANL=(GLAUBER'22',GLAUBER'23'); /* '22' Simultaneous emission: 1-proton removal momentum distribution for 13C+p is obtained as first step, then which is folded by itself to generate momentum distribution for 13C+p+p case. */ /* '23' Sequential decay: Proton emission with 14N resonance at 8.618 MeV or 8.980 MeV and from their decay is considered. */ /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,2; INC-ENGY-LAB=56MEV/A; DATA1=253MEV/C'24'; /* '24' Width (FWHM) of a single Gaussian distribution fit. Two-proton removal momentum distribution if connected by a smooth line including the asymmetric tail has a width of 285 +65-10 MeV/c. */ DELTA-DATA1=17MEV/C; /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; MOM-LNGTD'25' COUNTS DELTA-COUNTS (MEV/C) (ARB) (ARB) -487.5 3 +-1.73 -437.5 10 +-3.16 -387.5 22 +-4.69 -337.5 27 +-5.19 -287.5 38 +-6.16 -237.5 65 +-8.06 -187.5 92 +-9.59 -137.5 126 +-11.22 -87.5 126 +-11.22 -37.5 171 +-13.07 12.5 172 +-13.13 62.5 186 +-13.63 112.5 118 +-10.86 162.5 56 +-7.48 212.5 29 +-5.38 262.5 5 +-2.23 \END; /*===================================================================*/ |