ENTRY 10718 20091105 13551071800000001 SUBENT 10718001 20091105 13551071800100001 BIB 14 42 1071800100002 INSTITUTE (1USAKTY) 1071800100003 REFERENCE (J,PR/C,16,2223,197712) 1071800100004 AUTHOR (D.F.Coope,S.N.Tripathi,M.C.Schell,J.L.Weil, 1071800100005 M.T.McELlistrem) 1071800100006 TITLE Strong collective excitations in low energy neutron 1071800100007 scattering from transitional nuclei 1071800100008 FACILITY (VDG,1USAKTY) 6.5-MeV Van de Graaff 1071800100009 INC-SOURCE (P-T) Protons on tritium gas 1071800100010 SAMPLE Enriched samarium oxide in 2.0-cm diameter polyethylene1071800100011 cylinders. 1071800100012 DETECTOR (SCIN) Liquid scintillator, 11.3-cm diameter by 1.3-cm 1071800100013 thick with photomultiplier to detect scattered 1071800100014 neutrons. Neutron flux monitored with small plastic 1071800100015 scintillator 1071800100016 MONITOR (8-O-16(N,EL)8-O-16,,SIG) 1071800100017 Neutron source reaction used to determine detector 1071800100018 efficiency at various angles. 1071800100019 METHOD (TOF) Compressed beam-pulse time of flight technique. 1071800100020 Background runs made on water samples and empty 1071800100021 sample containers. Pulse height discrimination used 1071800100022 to separate neutrons and gamma-rays. Monte Carlo 1071800100023 programs used to make neutron attenuation and multiple1071800100024 scattering corrections. 1071800100025 CORRECTION Corrected for: 1071800100026 - dead time, 1071800100027 - neutron attenuation, 1071800100028 - geometry, 1071800100029 - multiple scattering, 1071800100030 - oxygen and carbon scattering contributions. 1071800100031 ERR-ANALYS Normalization errors due to uncertainties in total 1071800100032 oxygen cross section and energy dependence of detector1071800100033 efficiency (total of 5%). 1071800100034 (DATA-ERR) Relative error approximately includes 1071800100035 contribution of statistical uncertainties and imperfec1071800100036 background subtraction. 1071800100037 STATUS (TABLE) Data taken from private comm., Coope, 1978/9. 1071800100038 Angle given in lab system and data in c.m. 1071800100039 (COREL,12949001) n,n'gamma measurements. 1071800100040 HISTORY (19791210C) 1071800100041 (19840918A) bib corrections. 1071800100042 (19860325A) bib correction, monitor, energy rsl added. 1071800100043 (20091105A) BIB section updated 1071800100044 ENDBIB 42 0 1071800100045 COMMON 3 3 1071800100046 EN EN-RSL MONIT 1071800100047 MEV KEV B 1071800100048 2.47 70. 1.05 1071800100049 ENDCOMMON 3 0 1071800100050 ENDSUBENT 49 0 1071800199999 SUBENT 10718002 20090906 13551071800200001 BIB 4 6 1071800200002 REACTION (62-SM-148(N,EL)62-SM-148,,DA) 1071800200003 SAMPLE 68.35-Gms, enriched to 96.4-Percent Sm-148, 4.8-Cm long1071800200004 MONITOR (8-O-16(N,SCT)8-O-16,,SIG) total O-16 cross section at 1071800200005 2.47-MeV used to determine absolute cross section 1071800200006 normalization 1071800200007 HISTORY (20090906A) Added relative uncertainty. 1071800200008 ENDBIB 6 0 1071800200009 COMMON 1 3 1071800200010 DATA-ERR 1071800200011 PER-CENT 1071800200012 9. 1071800200013 ENDCOMMON 3 0 1071800200014 DATA 2 13 1071800200015 ANG DATA-CM 1071800200016 ADEG MB/SR 1071800200017 20. 3052. 1071800200018 30. 1935. 1071800200019 50. 452. 1071800200020 60. 165. 1071800200021 70. 68.0 1071800200022 80. 32.2 1071800200023 90. 53.5 1071800200024 100. 91.4 1071800200025 110. 116. 1071800200026 120. 120. 1071800200027 130. 105.3 1071800200028 143. 68.7 1071800200029 156.5 57.4 1071800200030 ENDDATA 15 0 1071800200031 ENDSUBENT 30 0 1071800299999 SUBENT 10718003 20090906 13551071800300001 BIB 5 8 1071800300002 REACTION (62-SM-148(N,INL)62-SM-148,PAR,DA) 1071800300003 SAMPLE 68.35-Gms, enriched to 96.4-Percent Sm-148, 4.8-Cm long1071800300004 MONITOR (8-O-16(N,SCT)8-O-16,,SIG) total O-16 cross section at 1071800300005 2.47-MeV used to determine absolute cross section 1071800300006 normalization 1071800300007 ERR-ANALYS Relative error approximately 9%. 1071800300008 HISTORY (19801216A) level energies added 1071800300009 (20090906A) Added relative uncertainty. 1071800300010 ENDBIB 8 0 1071800300011 COMMON 2 3 1071800300012 E-LVL DATA-ERR 1071800300013 KEV PER-CENT 1071800300014 550. 9. 1071800300015 ENDCOMMON 3 0 1071800300016 DATA 2 11 1071800300017 ANG DATA-CM 1071800300018 ADEG MB/SR 1071800300019 50. 34.2 1071800300020 60. 43.4 1071800300021 70. 45.0 1071800300022 80. 37.0 1071800300023 90. 45.9 1071800300024 100. 40.9 1071800300025 110. 36.4 1071800300026 120. 38.0 1071800300027 130. 44.1 1071800300028 143. 52.0 1071800300029 156.5 34.1 1071800300030 ENDDATA 13 0 1071800300031 ENDSUBENT 30 0 1071800399999 SUBENT 10718004 20090906 13551071800400001 BIB 4 6 1071800400002 REACTION (62-SM-150(N,EL)62-SM-150,,DA) 1071800400003 SAMPLE 47.66-Gms, enriched to 87.4-Percent Sm-150, 3.8-Cm long1071800400004 MONITOR (8-O-16(N,SCT)8-O-16,,SIG) total O-16 cross section at 1071800400005 2.47-MeV used to determine absolute cross section 1071800400006 normalization 1071800400007 HISTORY (20090906A) Added relative uncertainty. 1071800400008 ENDBIB 6 0 1071800400009 COMMON 1 3 1071800400010 DATA-ERR 1071800400011 PER-CENT 1071800400012 7. 1071800400013 ENDCOMMON 3 0 1071800400014 DATA 2 13 1071800400015 ANG DATA-CM 1071800400016 ADEG MB/SR 1071800400017 20. 3254. 1071800400018 30. 1871. 1071800400019 50. 410. 1071800400020 60. 146.2 1071800400021 70. 55.6 1071800400022 80. 29.2 1071800400023 90. 40.8 1071800400024 100. 70.7 1071800400025 110. 86.4 1071800400026 120. 91.4 1071800400027 130. 88.8 1071800400028 143. 53.0 1071800400029 156.5 38.7 1071800400030 ENDDATA 15 0 1071800400031 ENDSUBENT 30 0 1071800499999 SUBENT 10718005 20090906 13551071800500001 BIB 4 7 1071800500002 REACTION (62-SM-150(N,INL)62-SM-150,PAR,DA) 1071800500003 SAMPLE 47.66-Gms, enriched to 87.4-Percent Sm-150, 3.8-Cm long1071800500004 MONITOR (8-O-16(N,SCT)8-O-16,,SIG) total O-16 cross section at 1071800500005 2.47-MeV used to determine absolute cross section 1071800500006 normalization 1071800500007 HISTORY (19801216A) energy levels added 1071800500008 (20090906A) Added relative uncertainty. 1071800500009 ENDBIB 7 0 1071800500010 COMMON 2 3 1071800500011 E-LVL DATA-ERR 1071800500012 KEV PER-CENT 1071800500013 334. 7. 1071800500014 ENDCOMMON 3 0 1071800500015 DATA 2 12 1071800500016 ANG DATA-CM 1071800500017 ADEG MB/SR 1071800500018 30. 50.7 1071800500019 50. 46.0 1071800500020 60. 37.9 1071800500021 70. 49.6 1071800500022 80. 40.0 1071800500023 90. 34.4 1071800500024 100. 35.0 1071800500025 110. 31.7 1071800500026 120. 41.9 1071800500027 130. 33.7 1071800500028 143. 35.5 1071800500029 156.5 30.1 1071800500030 ENDDATA 14 0 1071800500031 ENDSUBENT 30 0 1071800599999 SUBENT 10718006 20090906 13551071800600001 BIB 4 6 1071800600002 REACTION (62-SM-152(N,EL)62-SM-152,,DA) 1071800600003 SAMPLE 57.63-Gms, enriched to 99.5-Percent Sm-150, 4.7-Cm long1071800600004 MONITOR (8-O-16(N,SCT)8-O-16,,SIG) total O-16 cross section at 1071800600005 2.47-MeV used to determine absolute cross section 1071800600006 normalization 1071800600007 HISTORY (20090906A) Added relative uncertainty. 1071800600008 ENDBIB 6 0 1071800600009 COMMON 1 3 1071800600010 DATA-ERR 1071800600011 PER-CENT 1071800600012 7. 1071800600013 ENDCOMMON 3 0 1071800600014 DATA 2 13 1071800600015 ANG DATA-CM 1071800600016 ADEG MB/SR 1071800600017 20. 2979. 1071800600018 30. 1738. 1071800600019 50. 394.8 1071800600020 60. 162. 1071800600021 70. 56.6 1071800600022 80. 23.4 1071800600023 90. 22.8 1071800600024 100. 42.6 1071800600025 110. 60.4 1071800600026 120. 66.1 1071800600027 130. 57.1 1071800600028 143. 44.6 1071800600029 156.5 40.3 1071800600030 ENDDATA 15 0 1071800600031 ENDSUBENT 30 0 1071800699999 SUBENT 10718007 20090906 13551071800700001 BIB 5 10 1071800700002 REACTION (62-SM-152(N,INL)62-SM-152,PAR,DA) 1071800700003 SAMPLE 57.63-Gms, enriched to 99.5-Percent Sm-150, 4.7-Cm long1071800700004 MONITOR (8-O-16(N,SCT)8-O-16,,SIG) total O-16 cross section at 1071800700005 2.47-MeV used to determine absolute cross section 1071800700006 normalization 1071800700007 ERR-ANALYS (DATA-ERR1) Data uncertainties supplied by authors, 1071800700008 source not given. 1071800700009 HISTORY (19801216A) Level energies added 1071800700010 (20090906A) Added relative uncertainty; changed error 1071800700011 heading. 1071800700012 ENDBIB 10 0 1071800700013 COMMON 1 3 1071800700014 DATA-ERR 1071800700015 PER-CENT 1071800700016 7. 1071800700017 ENDCOMMON 3 0 1071800700018 DATA 5 22 1071800700019 E-LVL ANG DATA-CM +DATA-ERR1 -DATA-ERR1 1071800700020 KEV ADEG MB/SR MB/SR MB/SR 1071800700021 122. 50. 70.2 1071800700022 122. 60. 69.0 1071800700023 122. 70. 55.2 1071800700024 122. 80. 30.0 1071800700025 122. 90. 33.0 1071800700026 122. 100. 46.3 1071800700027 122. 110. 47.6 1071800700028 122. 120. 42.2 1071800700029 122. 130. 46.4 1071800700030 122. 143. 30.8 1071800700031 122. 156.5 26.9 1071800700032 367. 50. 25. 4. 4. 1071800700033 367. 60. 25. 6. 6. 1071800700034 367. 70. 33. 5. 5. 1071800700035 367. 80. 27. 5. 5. 1071800700036 367. 90. 24. 3. 3. 1071800700037 367. 100. 35. 10. 6. 1071800700038 367. 110. 27. 5. 5. 1071800700039 367. 120. 6.7 1.5 1.5 1071800700040 367. 130. 8. 2. 2. 1071800700041 367. 143. 2.5 3. 3. 1071800700042 367. 156.5 7. 3. 2. 1071800700043 ENDDATA 24 0 1071800700044 ENDSUBENT 43 0 1071800799999 SUBENT 10718008 20090906 13551071800800001 BIB 5 6 1071800800002 REACTION (62-SM-152(N,INL)62-SM-152,PAR,SIG) 1071800800003 SAMPLE 57.63-Gms, enriched to 99.5-Percent Sm-150, 4.7-Cm long1071800800004 MONITOR (26-FE-56(N,INL)26-FE-56,PAR,SIG) 1071800800005 DETECTOR (GELI) 35-cubic cm geli detector used for gammas 1071800800006 HISTORY (19801216A) level energies added 1071800800007 (20090906A) Added relative uncertainty. 1071800800008 ENDBIB 6 0 1071800800009 COMMON 2 3 1071800800010 E-NRM DATA-ERR 1071800800011 KEV PER-CENT 1071800800012 846.7 7. 1071800800013 ENDCOMMON 3 0 1071800800014 DATA 2 2 1071800800015 E-LVL DATA 1071800800016 KEV MB 1071800800017 712. 259. 1071800800018 1125. 6. 1071800800019 ENDDATA 4 0 1071800800020 ENDSUBENT 19 0 1071800899999 ENDENTRY 8 0 1071899999999