ENTRY 13818 20020129 00001381800000001 SUBENT 13818001 20020129 00001381800100001 BIB 7 8 1381800100002 INSTITUTE (1USAANL) 1381800100003 REFERENCE (J,PR,168,1317,196804) 1381800100004 AUTHOR (H.H.Bolotin) 1381800100005 TITLE Level Structure of Low-Lying Excited States of 46Sc. 1381800100006 FACILITY (REAC,1USAANL) Argonne CP-5 reseach reactor. 1381800100007 CORRECTION Intensities of all lines corrected for detector 1381800100008 efficiency. 1381800100009 HISTORY (20020124C) IS 1381800100010 ENDBIB 8 0 1381800100011 COMMON 1 3 1381800100012 EN-DUMMY 1381800100013 EV 1381800100014 0.0253 1381800100015 ENDCOMMON 3 0 1381800100016 ENDSUBENT 15 0 1381800199999 SUBENT 13818002 20020129 00001381800200001 BIB 11 47 1381800200002 REACTION (21-SC-45(N,G)21-SC-46,,SPC,,REL/SPA) 1381800200003 FACILITY Tangential through-tube facility used to study high- 1381800200004 energy primary gamma-ray transitions; low-energy 1381800200005 transitions strongly attenuated in neutron shielding 1381800200006 material. 1381800200007 INC-SOURCE (REAC) Reactor core with a thermal-neutron flux ~3E+13 1381800200008 n/(cm2.s). 1381800200009 INC-SPECT Reactor spectrum with cadmium ratio ~7. 1381800200010 SAMPLE Target of high-purity Sc2O3 in high-purity graphite 1381800200011 holders installed at the center of tangential through-1381800200012 tube facility. 1381800200013 DETECTOR (GELI) Ge(Li) detector having sensitive volume of ~4 1381800200014 cm3 and an energy resolution width of 6 keV at a 1381800200015 deposited energy of 6 MeV. 1381800200016 (NAICR) Two 4x4-in. NaI(T1) scintillators mounted 180 1381800200017 degrees apart, straddled the Ge(Li) detector in order 1381800200018 to clarify and confirm certain lines as double-escape 1381800200019 peaks in the pair-spectrometer mode of the detector 1381800200020 system. 1381800200021 METHOD (COINC) Singles and coincidence gamma-ray techniques. 1381800200022 System calibrated periodically with a voltage pulser 1381800200023 to accurately determine energies of the spectral 1381800200024 lines. Carbon ground-state gamma-ray (4945.4 keV) and 1381800200025 0.511-MeV annihilation radiation peaks, used as 1381800200026 energy standards. 1381800200027 Graphite sample holders used as convenient gamma-ray 1381800200028 energy standards, using the high-energy gamma-ray 1381800200029 transitions at 4945 and 3684 keV from 13C. 1381800200030 Nitrogen contamination purged by flowing He gas through1381800200031 the reactor tube. 1381800200032 MONITOR (21-SC-45(N,G)21-SC-46,,SPC,,REL/SPA) 1381800200033 Normalized to strongest transition (8182 keV) observed1381800200034 in spectrum. 1381800200035 ANALYSIS Computer code used for analyzing spectra by employing 1381800200036 Gaussian line shape in a minimization procedure. 1381800200037 Analysis took into account the presence of double- 1381800200038 and single-escape peaks, as well as of the full-energy1381800200039 peaks observed for the stronger transitions. 1381800200040 Double-escape peak assignments corroborated by the 1381800200041 pair-spectrometer spectrum. 1381800200042 ERR-ANALYS (E-ERR) Uncertainties in gamma-ray energies. 1381800200043 (DATA-ERR) Uncertainties of line intensities, reflect 1381800200044 also the ~15% uncertainty of the line intensities in 1381800200045 nitrogen used in the empirical determination of the 1381800200046 relative double-escape-peak detection efficiences of 1381800200047 the Ge(Li) detector. 1381800200048 STATUS Data taken from Table I of reference. 1381800200049 ENDBIB 47 0 1381800200050 COMMON 1 3 1381800200051 E-NRM 1381800200052 KEV 1381800200053 8182. 1381800200054 ENDCOMMON 3 0 1381800200055 DATA 4 122 1381800200056 E E-ERR DATA DATA-ERR 1381800200057 KEV KEV ARB-UNITS ARB-UNITS 1381800200058 8767. 1. 7.4 1.1 1381800200059 8624. 1. 2.2 0.3 1381800200060 8539. 1. 45. 7. 1381800200061 8477. 1. 6.9 10. 1381800200062 8321. 1. 20. 3. 1381800200063 8182. 1. 100. 1381800200064 8139. 1. 27. 4. 1381800200065 7930. 1. 5.9 0.9 1381800200066 7675. 1. 4.0 0.6 1381800200067 7641. 1. 28. 4. 1381800200068 7633. 3. 2.3 0.4 1381800200069 7494. 1. 5.7 0.9 1381800200070 7442. 1. 2.5 0.4 1381800200071 7375. 2. 0.5 0.2 1381800200072 7370. 2. 1.2 0.2 1381800200073 7345. 3. 0.5 0.3 1381800200074 7336. 2. 3.7 0.6 1381800200075 7238. 2. 8.0 1.3 1381800200076 7121. 1. 32. 5. 1381800200077 7055. 1. 5.7 0.9 1381800200078 7001. 2. 2.7 0.5 1381800200079 6964. 1. 3.7 0.6 1381800200080 6930. 3. 0.9 0.2 1381800200081 6876. 2. 13.5 2.1 1381800200082 6852. 4. 3.2 0.8 1381800200083 6842. 1. 92. 14. 1381800200084 6833. 3. 2.1 1.0 1381800200085 6720. 1. 29. 4. 1381800200086 6693. 4. 3.1 0.7 1381800200087 6678. 4. 2.0 0.9 1381800200088 6650. 2. 9.9 1.6 1381800200089 6644. 2. 11.5 2.0 1381800200090 6635. 2. 1.1 0.3 1381800200091 6610. 3. 0.8 0.4 1381800200092 6560. 1. 44. 7. 1381800200093 6542. 2. 4.4 0.7 1381800200094 6509. 2. 9.2 1.4 1381800200095 6470. 3. 2.3 0.4 1381800200096 6460. 1. 11.8 1.8 1381800200097 6433. 1. 1.6 0.3 1381800200098 6366. 3. 13.4 2.2 1381800200099 6352. 1. 54. 8. 1381800200100 6330. 4. 3.0 0.6 1381800200101 6320. 1. 61. 9. 1381800200102 6312. 3. 8.9 1.4 1381800200103 6303. 2. 18. 3. 1381800200104 6242. 5. 2.2 0.7 1381800200105 6234. 5. 1.2 0.6 1381800200106 6223. 5. 2.0 0.6 1381800200107 6212. 5. 3.3 0.8 1381800200108 6205. 4. 8.9 1.4 1381800200109 6195. 2. 12.5 2.0 1381800200110 6184. 5. 3.7 0.8 1381800200111 6173. 1. 51. 8. 1381800200112 6119. 2. 4.7 0.8 1381800200113 6100. 2. 9.5 1.5 1381800200114 6068. 2. 8.3 1.3 1381800200115 6057. 1. 32. 5. 1381800200116 6048. 1. 14.7 2.2 1381800200117 5980. 1. 7.0 1.0 1381800200118 5928. 4. 3.3 0.8 1381800200119 5907. 3. 13.4 2.2 1381800200120 5899. 1. 49. 8. 1381800200121 5874. 4. 2.6 0.5 1381800200122 5868. 5. 25. 0.6 1381800200123 5860. 3. 1.6 0.3 1381800200124 5822. 2. 4.7 0.8 1381800200125 5804. 2. 5.5 0.9 1381800200126 5795. 3. 3.5 0.6 1381800200127 5783. 2. 10.0 1.5 1381800200128 5759. 5. 1.9 0.5 1381800200129 5745. 1. 25. 4. 1381800200130 5730. 4. 5.2 1.2 1381800200131 5721. 3. 5.8 0.9 1381800200132 5705. 2. 4.6 0.8 1381800200133 5680. 3. 7.9 1.3 1381800200134 5667. 2. 19. 3. 1381800200135 5651. 5. 2.4 0.5 1381800200136 5638. 5. 1.3 0.3 1381800200137 5624. 2. 25. 3. 1381800200138 5595. 5. 1.2 0.3 1381800200139 5584. 2. 16.8 2.7 1381800200140 5568. 3. 9.3 1.5 1381800200141 5557. 4. 9.8 1.7 1381800200142 5539. 4. 1.3 0.6 1381800200143 5532. 2. 12.1 2.0 1381800200144 5521. 5. 1.5 0.4 1381800200145 5502. 2. 7.9 1.2 1381800200146 5484. 2. 22.5 3.5 1381800200147 5455. 4. 10.1 1.9 1381800200148 5447. 3. 22.2 3.7 1381800200149 5418. 4. 1.4 0.3 1381800200150 5400. 5. 1.4 0.3 1381800200151 5380. 2. 10.8 1.7 1381800200152 5365. 2. 10.6 1.7 1381800200153 5348. 2. 14.3 2.2 1381800200154 5337. 2. 28. 4. 1381800200155 5318. 2. 8.4 1.4 1381800200156 5297. 5. 2.9 0.7 1381800200157 5287. 2. 19. 3. 1381800200158 5268. 2. 54. 9. 1381800200159 5227. 5. 6.1 2.0 1381800200160 5219. 5. 2.5 0.7 1381800200161 5211. 2. 16.7 2.8 1381800200162 5164. 1. 21.4 3.5 1381800200163 5155. 2. 8.6 1.4 1381800200164 5140. 5. 6.5 1.2 1381800200165 5129. 3. 13.1 2.2 1381800200166 5106. 5. 6.8 1.9 1381800200167 5085. 2. 18.6 3.0 1381800200168 5053. 3. 7.4 1.4 1381800200169 5039. 4. 6.1 1.1 1381800200170 4994. 1. 29.3 4.3 1381800200171 4975. 1. 75. 11. 1381800200172 4919. 2. 13.8 2.2 1381800200173 4899. 5. 1.7 0.6 1381800200174 4891. 2. 17.8 2.8 1381800200175 4883. 2. 18.5 2.9 1381800200176 4875. 4. 2.5 0.6 1381800200177 4822. 2. 14.4 2.4 1381800200178 4812. 5. 5.6 1.1 1381800200179 4775. 5. 1.4 0.5 1381800200180 ENDDATA 124 0 1381800200181 ENDSUBENT 180 0 1381800299999 SUBENT 13818003 20020129 00001381800300001 BIB 11 40 1381800300002 REACTION (21-SC-45(N,G)21-SC-46,,SPC,,REL/MXW) 1381800300003 FACILITY External-beam facility. 1381800300004 INC-SOURCE (THCOL) Highly collimated external beam of thermal 1381800300005 neutrons, (thermal flux ~5.E+7 neutrons/cm2/s) 1381800300006 effectively free of fast neutrons and pile gammas, 1381800300007 extracted from a modified thermal-column facility. 1381800300008 INC-SPECT Thermal spectrum (cadmium ratio ~550). 1381800300009 SAMPLE Targets consisted of pressed cylindrical pellets of 1381800300010 high-purity Sc2O3 contained in thin (4.5 mg/cm2) 1381800300011 aluminum holders. 1381800300012 DETECTOR (GELI) Two planar drifted Ge(Li) detectors (each ~3.5 1381800300013 cm3 active volume) mounted at right angles to each 1381800300014 other and positioned 1.5 in. from the beam axis. Both 1381800300015 detectors shielded by 0.25-cm-thick 6LiF. 1381800300016 One detector always set to record low-energy portion 1381800300017 of spectrum, while second detector registered either 1381800300018 high-energy spectrum (~7-9 MeV) or low-energy 1381800300019 spectrum. 1381800300020 METHOD Studies conducted by means of singles and coincidence 1381800300021 techniques on two separate sets of gamma-ray. 1381800300022 Coincidence relationships established among the group 1381800300023 of low-energy transitions served to complement and 1381800300024 extend information from the high-energy/low-energy 1381800300025 coincidence studies. 1381800300026 In the energy range be1ow ~2 MeV, the detection 1381800300027 efficiency of the Ge(Li) detector was determined for 1381800300028 each peak with the aid of single gamma-ray lines from 1381800300029 intensity-calibrated sources. 1381800300030 MONITOR Intensities of all lines normalized to the sum of 1381800300031 intensities observed for the 227.8- and 228.7-keV 1381800300032 transitions. 1381800300033 Energy calibration obtained by use of well-known energy1381800300034 standards and a series of pulser calibration peaks. 1381800300035 ANALYSIS Computer code used for analyzing spectra by employing 1381800300036 Gaussian line shape in a minimization procedure. 1381800300037 ERR-ANALYS (E-ERR) Approximate uncertainties in gamma-ray 1381800300038 energies. 1381800300039 (DATA-ERR) Approximate uncertainties in line 1381800300040 intensities. 1381800300041 STATUS Data taken from Table II of reference. 1381800300042 ENDBIB 40 0 1381800300043 NOCOMMON 0 0 1381800300044 DATA 4 23 1381800300045 E E-ERR DATA DATA-ERR 1381800300046 KEV KEV ARB-UNITS PER-CENT 1381800300047 899.0 0.7 2.2 15. 1381800300048 860.7 0.7 3.4 15. 1381800300049 844.0 0.7 1.1 15. 1381800300050 835.2 0.7 1.4 15. 1381800300051 807.6 0.7 4.2 15. 1381800300052 773.9 0.7 4.3 15. 1381800300053 722.1 0.7 4.4 15. 1381800300054 627.5 0.7 18.8 15. 1381800300055 585.0 0.7 16.0 15. 1381800300056 554.5 0.7 13.9 15. 1381800300057 547.3 0.7 2.0 15. 1381800300058 539.2 0.7 5.7 15. 1381800300059 497.9 0.7 0.4 15. 1381800300060 486.2 0.7 3.4 15. 1381800300061 400.1 0.7 2.0 15. 1381800300062 295.2 0.4 34. 15. 1381800300063 280.8 0.4 1.9 15. 1381800300064 228.7 0.4 32. 15. 1381800300065 227.8 0.4 68. 15. 1381800300066 216.1 0.4 20. 15. 1381800300067 147.0 0.4 39. 15. 1381800300068 142.5 0.4 33. 15. 1381800300069 52.0 0.4 8.9 15. 1381800300070 ENDDATA 25 0 1381800300071 ENDSUBENT 70 0 1381800399999 ENDENTRY 3 0 1381899999999