ENTRY 22252 20121209 22342225200000001 SUBENT 22252001 20121209 22342225200100001 BIB 16 51 2225200100002 REFERENCE ((S,JAERI-M-90-025,259,199002)= 2225200100003 (S,NEANDC(J)-149,259,199002)= 2225200100004 (S,INDC(JPN)-136,259,199002)) 2225200100005 TITLE Measurement of production cross sections of short 2225200100006 lived nuclei by cyclic activation using a pulsed 2225200100007 neutron source 2225200100008 AUTHOR (J.Yamamoto,J.Datemichi,T.Kanaoka,T.Takayama, 2225200100009 A.Takahashi,K.Sumita) 2225200100010 INSTITUTE (2JPNOSA) 2225200100011 FACILITY (ACCEL,2JPNOSA) The Osaka University Accelerator used. 2225200100012 INC-SOURCE (D-T) A pulsed 14 MeV neutron source was produced 2225200100013 by bombarding a tritium target with a D+ beam. 2225200100014 INC-SPECT .The neutron activation was made cyclic. The duration 2225200100015 of the bursts was controlled by the D+ beam pulsing. 2225200100016 The beam controller was interlocked with the activity 2225200100017 counting system and was designed as to continuously 2225200100018 change the neutron burst time and the period between 2225200100019 bursts from 0.3ms to 54.3 ms and 0.6 ms to 108.6 ms, 2225200100020 respectively. 2225200100021 METHOD (ACTIV) The neutron (cyclic) activation technique was 2225200100022 used to measure the cross-sections. 2225200100023 (TOF) The neutron energy spectrum of the irradiating 2225200100024 source was analysed by TOF technique using an NE213 2225200100025 scintillation detector as a monitor. 2225200100026 COMMENT .At present, the technique is applicable only to 2225200100027 isotopes that emit gamma-rays. 2225200100028 SAMPLE .Samples of natural lead were used, positioned at 15 cm2225200100029 from the neutron source and at 75 cm from the Ge 2225200100030 detector. They were either disks of 45 mm diameter and2225200100031 2 mm in thickness or hollow cylinders of dimensions, 2225200100032 28 mm inner diameter, 30 mm in outer diameter, 70 mm 2225200100033 length and 1 mm thickness. 2225200100034 DETECTOR (GE-IN) The gamma activity of the irradiated samples 2225200100035 was measured using a Ge detector. The detector 2225200100036 was shielded against direct neutrons from the source 2225200100037 using iron, concrete, polythene and lead. 2225200100038 (SCIN) A NE213 liquid scintillation detector was 2225200100039 positioned at 75 cm from the Ge detector in order 2225200100040 to monitor the neutron energy spectrum. 2225200100041 PART-DET (DG) 2225200100042 (N) 2225200100043 ERR-ANALYS (DATA-ERR) Error on the experimental values. 2225200100044 No details given. 2225200100045 CORRECTION .Data was corrected for gamma-ray background 2225200100046 contributions which are expected to be significant. 2225200100047 STATUS (TABLE) .Data taken from table 1 of JAERI-M-90-025,259 2225200100048 HISTORY (19930701C) N.O. 2225200100049 (19931129E) 2225200100050 (20121209A) SD: Updated to new date formats,lower case.2225200100051 Corrected according last EXFOR rules and Dict. 2225200100052 EN was added to COMMON section in Subent 001. 2225200100053 ENDBIB 51 0 2225200100054 COMMON 1 3 2225200100055 EN 2225200100056 MEV 2225200100057 14. 2225200100058 ENDCOMMON 3 0 2225200100059 ENDSUBENT 58 0 2225200199999 SUBENT 22252002 20121209 22342225200200001 BIB 4 7 2225200200002 REACTION (82-PB-0(N,X)82-PB-207-M,,SIG) 2225200200003 DECAY-DATA (82-PB-207-M,0.81SEC,DG,1064./570.) 2225200200004 SAMPLE .A disk of 45 mm diameter and 2 mm in thickness 2225200200005 of natural lead was used, positioned at 15 cm 2225200200006 from the neutron source and at 75 cm from the Ge 2225200200007 detector. 2225200200008 HISTORY (20121209A) SD: SF1 => 82-PB-0 and SF3 => X 2225200200009 ENDBIB 7 0 2225200200010 NOCOMMON 0 0 2225200200011 DATA 2 1 2225200200012 DATA DATA-ERR 2225200200013 MB MB 2225200200014 1010. 520. 2225200200015 ENDDATA 3 0 2225200200016 ENDSUBENT 15 0 2225200299999 SUBENT 22252003 20121209 22342225200300001 BIB 4 7 2225200300002 REACTION (82-PB-0(N,X)82-PB-207-M,,SIG) 2225200300003 DECAY-DATA (82-PB-207-M,0.81SEC,DG,1064./570.) 2225200300004 SAMPLE .A hollow cylinder was used as the second set of 2225200300005 samples. Its dimensions are 28 mm inner diameter, 2225200300006 30 mm in outer diameter, 70 mm length and 1 mm 2225200300007 thickness. 2225200300008 HISTORY (20121209A) SD: SF1 => 82-PB-0 and SF3 => X 2225200300009 ENDBIB 7 0 2225200300010 NOCOMMON 0 0 2225200300011 DATA 2 1 2225200300012 DATA DATA-ERR 2225200300013 MB MB 2225200300014 860. 55. 2225200300015 ENDDATA 3 0 2225200300016 ENDSUBENT 15 0 2225200399999 ENDENTRY 3 0 2225299999999