ENTRY 23123 20101130 22232312300000001 SUBENT 23123001 20101130 22232312300100001 BIB 12 33 2312300100002 TITLE Preliminary measurements of the neutron total cross 2312300100003 section of Pb-208 at 24 keV and neutron polarizability.2312300100004 AUTHOR (O.O.Gritzay, V.A.Libman, A.V.Murzin, V.G.Nikolenko, 2312300100005 A.B.Popov, G.S.Samosvat, W.Waschkowski) 2312300100006 INSTITUTE (2GERMUN) W.Waschkowski 2312300100007 (4ZZZDUB) V.G.Nikolenko, A.B.Popov, G.S.Samosvat 2312300100008 (4UKRIJD) O.O.Gritzay, V.A.Libman, A.V.Murzin 2312300100009 REFERENCE ((S,ISINN-8,165,2000)=(S,JINR-E3-2000-192,165,2000)) 2312300100010 Main reference. 2312300100011 (W,GRITZAY,20101207) 2312300100012 FACILITY (REAC,2GERMUN) Research reactor FRM at Technical 2312300100013 University of Muenich. 2312300100014 INC-SOURCE (REAC) Set of filters : 40 cm Fe-56, 97 or 127 cm Al, 2312300100015 7 cm S installed in horizontal tube P2 gives the 2312300100016 INC-SPECT quasi-monoenergetic neutron beam of about 24 keV energy2312300100017 with admixture of other energies of only 1 %. 2312300100018 DETECTOR (PROPC) two proportional hydrogen counters for neutron 2312300100019 detection. 2312300100020 METHOD (FNB) Filtered neutron beam. 2312300100021 (TRN) Neutron transmission. 2312300100022 (PHD) Pulse amplitudes were analyzed by two-channel 2312300100023 spectrometer. 2312300100024 Measurement with and without sample in the beam. 2312300100025 Four independent curves of transmission were 2312300100026 calculated separately for each amplitude channel. 2312300100027 200 hours running. 2312300100028 CORRECTION For dead time, using approximation of dead time by 2312300100029 (4.7+0.0037*I)+-1.0 microsec, derived from several 2312300100030 transmission measurement with different neutron beam 2312300100031 intensities. 2312300100032 STATUS (APRVD) Approved by O.Gritzay 07.12.2010 . 2312300100033 HISTORY (20101130C) M.M. 2312300100034 Entry was sent 01.12.2010 to O.Gritzay to approve. 2312300100035 ENDBIB 33 0 2312300100036 NOCOMMON 0 0 2312300100037 ENDSUBENT 36 0 2312300199999 SUBENT 23123002 20101130 22232312300200001 BIB 5 11 2312300200002 REACTION (82-PB-208(N,TOT),,SIG) 2312300200003 SAMPLE Pb-208 sample of 98.3 % enrichment, 99.98 % purity is 2312300200004 metallic cylinder of 15 mm diameter, 20.8 mm thick 2312300200005 (0.068717 +- 0.000033 1/b). 2312300200006 ERR-ANALYS (DATA-ERR) Total error, but components are not 2312300200007 specified. 2312300200008 COMMENT Of author O.Gritzay. 2312300200009 In the article the data were mentioned as preliminary, 2312300200010 but this experiment was stopped and no new analysis of 2312300200011 data is planned. 2312300200012 STATUS (TABLE) Text, page 166, of S,ISINN-8,165,2000. 2312300200013 ENDBIB 11 0 2312300200014 NOCOMMON 0 0 2312300200015 DATA 3 1 2312300200016 EN DATA DATA-ERR 2312300200017 KEV B B 2312300200018 24. 11.0490 0.0025 2312300200019 ENDDATA 3 0 2312300200020 ENDSUBENT 19 0 2312300299999 ENDENTRY 2 0 2312399999999