/*===================================================================*/ /* NRDF D1841 Data No.52 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,52; D#=D1841; TITLE=/Shell and odd-even effects on alpha-particle energy spectra from the (p,alpha) reaction on nuclei around neutron number 50/; PURPOSE=/To clarify the shell and odd-even effects on the (p,alpha) reaction/; ATH=(I.KUMABE'1', Y.MITO'1', M.HYAKUTAKE'1', N.KOORI'1', H.SAKAI'1', Y.WATANABE'1'); INST-ATH=(2JPNKYU'1'); /* '1' Department of Nuclear Engineering */ REF=PR/C; VLP=35(1987)467; RCTS=(92MO(P,ALPHA)X, 94MO(P,ALPHA)X, 93NB(P,ALPHA)X, 106PD(P,ALPHA)X, AG(P,ALPHA)X, 90ZR(P,ALPHA)X, 96MO(P,ALPHA)X, 98MO(P,ALPHA)X, 100MO(P,ALPHA)X); PHQS=(ENGY-SPEC, ENGY-SPEC'2'); /* '2' Angular integrated energy spectrum */ /*===================================================================*/ /* Experimental Conditions */ /*===================================================================*/ \\EXP,52; /* 2003-11-11 : Converted, Data converted from EXFOR E1303. Numerical data are exchanged with author's one. Many data tables are added. */ CHM=ELM; PHYS-FORM=SLD; BAC=SELF; POL-TGT=0%; ALGN-TGT=0%; ACC=VDGT; INST-ACC=2JPNKYU; BEAM-INTNSTY=20[300NA'3'; /* '3' Smaller beam currents were used at forward angles in order to reduce the dead time for the detector system. */ POL-PRJ=0%; DET-PARTCL=ALPHA; COINC=NO; ANT-COINC=NO; DET-SYS=SBD'4'; /* '4' To analyze and detect alpha-particle. Used as Delta E-E counter. Silicon surface barrier detectors having thickness of 15 and 300 micro-meter. The energy scale for alpha-particles was calibrated using the position of the alpha-particle peaks leading to the ground states of the residual nucleus for high energy calibration points. Low energy calibration points were obtained using the positions of the alpha-particle peaks leading to low lying states of 13N in the 16O(p,alpha)13N reaction on the oxygen impurities on the targets. */ /* Experimental Method: - Particle identification by 'E/Delta E' measurement (To identify alpha-particles from other reaction products) RCT=235U(P,FISSN)103RU; ENR=>99.0%; INC-ENGY-LAB-RANGE=9[18MEV; DET-PARTCL=GAMMA'142'; /* '142' Delayed gamma from 103Ru */ /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,52; TOT-ERR=X%'143'; /* '143' The errors cited originate from the consideration of gamma-counting statistics and the half-life fitting for the decay of the photopeak area. */ ENGY-GAMMA=497.1KEV'144'; INTNSTY-GAMMA=0.895'144'; HALF-LIFE=39.25DAY'144'; /* '144' Delayed gamma from 103Ru */ /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; INC-ENGY-LAB SIGMA DELTA-SIGMA (MEV) (MB) (MB) 9.0 0.19 +-0.02 10.2 1.58 +-0.10 11.4 4.09 +-0.22 12.0 5.63 +-0.16 12.5 10.01 +-0.80 13.6 14.59 +-0.54 14.6 22.63 +-0.84 15.6 30.14 +-0.80 18.0 47.16 +-1.87 \END; /*===================================================================*/ |