ENTRY 13816 20061127 13411381600000001 SUBENT 13816001 20061127 13411381600100001 BIB 13 40 1381600100002 INSTITUTE (1USAANL) 1381600100003 REFERENCE (J,PR,135,B52,1964) 1381600100004 AUTHOR (R.E.Cote,H.E.Jackson Jr,L.L.Lee Jr,J.P.Schiffer) 1381600100005 TITLE Excited-State Spin Assignments Based on (n,gamma-gamma)1381600100006 Angular-Correlation Measurements on Medium-Weight 1381600100007 Nuclei 1381600100008 FACILITY (REAC,1USAANL) Research reactor CP-5. Beam collimated 1381600100009 to size comparable to that of the sample and with beam1381600100010 intensity uniform within a few percent over the width 1381600100011 of the samples. 1381600100012 INC-SPECT Reactor spectrum. 1381600100013 SAMPLE Right circular cylinders with diameters from 1/4 to 1381600100014 3/4 in. and heights of 5-8 in. All of the samples 1381600100015 enriched to at least 94% in the isotope of interest; 1381600100016 continuously rotated to avoid any systematic errors 1381600100017 caused by inhomogeneities. 1381600100018 METHOD (COINC) High-energy primary gamma ray to one of the 1381600100019 l=1 levels detected in coincidence with a gamma ray 1381600100020 resulting from de-excitation of the l=1 state. 1381600100021 Monitored using fixed-angle coincidences to reduce 1381600100022 likelihood of experimental errors eventually caused 1381600100023 by neutron flux variations, changes in gain, changes 1381600100024 in coincidence resolving time and other systematic 1381600100025 errors. 1381600100026 DETECTOR (NAICR) 6-in-high by 8-in-diameter NaI(Tl) crystal 1381600100027 detecting the primary gamma; 4x4-in NaI(Tl) crystal 1381600100028 used for the de-excitation gammas. Lead shield 1381600100029 (1/4 in. thick) used in front of the 6x8 crystal to 1381600100030 reduce coincidences between high-energy gamma rays 1381600100031 and annihilation quanta. 1381600100032 A second 4x4-in Na(I) crystal served as monitor. 1381600100033 ERR-ANALYS (ERR-S) Statistical errors given. Reproducibility of 1381600100034 the results for any angle was demanded as a minimal 1381600100035 criterion for the absence of systematic error. 1381600100036 ADD-RES A0 and A2 coefficients of the Legendre polynomials that1381600100037 describe the angular dependence. 1381600100038 STATUS Data taken from Table I of reference. 1381600100039 HISTORY (20020118C) IS 1381600100040 (20040804A) REACTION form modified. 1381600100041 (20061127A) DR Reference corrected to follow APS format1381600100042 ENDBIB 40 0 1381600100043 COMMON 2 3 1381600100044 EN-DUMMY ANG 1381600100045 EV ADEG 1381600100046 0.0253 180. 1381600100047 ENDCOMMON 3 0 1381600100048 ENDSUBENT 47 0 1381600199999 SUBENT 13816002 20040804 00001381600200001 BIB 2 2 1381600200002 REACTION (20-CA-44(N,G)20-CA-45,PAR,DA,G,RSD/SPA) 1381600200003 SAMPLE Calcium carbonate sample. 1381600200004 ENDBIB 2 0 1381600200005 NOCOMMON 0 0 1381600200006 DATA 3 1 1381600200007 E-LVL DATA ERR-S 1381600200008 MEV NO-DIM NO-DIM 1381600200009 2.24 1.39 0.07 1381600200010 ENDDATA 3 0 1381600200011 ENDSUBENT 10 0 1381600299999 SUBENT 13816003 20040804 00001381600300001 BIB 2 2 1381600300002 REACTION (26-FE-54(N,G)26-FE-55,PAR,DA,G,RSD/SPA) 1381600300003 SAMPLE Iron sample in the form of metal or oxide. 1381600300004 ENDBIB 2 0 1381600300005 NOCOMMON 0 0 1381600300006 DATA 3 1 1381600300007 E-LVL DATA ERR-S 1381600300008 MEV NO-DIM NO-DIM 1381600300009 0.413 1.01 0.01 1381600300010 ENDDATA 3 0 1381600300011 ENDSUBENT 10 0 1381600399999 SUBENT 13816004 20040804 00001381600400001 BIB 2 2 1381600400002 REACTION (28-NI-58(N,G)28-NI-59,PAR,DA,G,RSD/SPA) 1381600400003 SAMPLE Nickel sample in the form of metal or oxide. 1381600400004 ENDBIB 2 0 1381600400005 NOCOMMON 0 0 1381600400006 DATA 3 3 1381600400007 E-LVL DATA ERR-S 1381600400008 MEV NO-DIM NO-DIM 1381600400009 0.470 1.01 0.01 1381600400010 0.870 0.74 0.03 1381600400011 1.310 0.92 0.11 1381600400012 ENDDATA 5 0 1381600400013 ENDSUBENT 12 0 1381600499999 SUBENT 13816005 20040804 00001381600500001 BIB 2 2 1381600500002 REACTION (28-NI-60(N,G)28-NI-61,PAR,DA,G,RSD/SPA) 1381600500003 SAMPLE Nickel sample in the form of metal or oxide. 1381600500004 ENDBIB 2 0 1381600500005 NOCOMMON 0 0 1381600500006 DATA 3 1 1381600500007 E-LVL DATA ERR-S 1381600500008 MEV NO-DIM NO-DIM 1381600500009 0.284 1.02 0.015 1381600500010 ENDDATA 3 0 1381600500011 ENDSUBENT 10 0 1381600599999 SUBENT 13816006 20040804 00001381600600001 BIB 2 2 1381600600002 REACTION (28-NI-62(N,G)28-NI-63,PAR,DA,G,RSD/SPA) 1381600600003 SAMPLE Nickel sample in the form of metal or oxide. 1381600600004 ENDBIB 2 0 1381600600005 NOCOMMON 0 0 1381600600006 DATA 3 3 1381600600007 E-LVL DATA ERR-S 1381600600008 MEV NO-DIM NO-DIM 1381600600009 0.158 1.62 0.10 1381600600010 0.526 0.69 0.06 1381600600011 1.008 0.98 0.05 1381600600012 ENDDATA 5 0 1381600600013 ENDSUBENT 12 0 1381600699999 ENDENTRY 6 0 1381699999999