ENTRY 22458 20090506 22122245800000001 SUBENT 22458001 20090506 22122245800100001 BIB 13 25 2245800100002 TITLE .Determination of the neutron scattering length of 2245800100003 204Pb by neutron interferometry method 2245800100004 AUTHOR (O.N.Ermakov, A.Ioffe, I.Karpikhin, P.Krupchitsky) 2245800100005 INSTITUTE (2GERBER) Ioffe, experimental site 2245800100006 (4RUSLIN) Ioffe 2245800100007 (4RUSITE) Karpikhin, Krupchitsky 2245800100008 REFERENCE ((S,ISINN-6,183,199805)=(S,JINR-E3-98-202,183,199805)) 2245800100009 Main reference 2245800100010 REL-REF (N,,G.DRABKIN,J,NIM/A,348,198,1994) Experimental 2245800100011 details 2245800100012 FACILITY (REAC,2GERBER) 2245800100013 MONITOR (14-SI-0(N,THS)14-SI-0,COH,AMP) 2245800100014 METHOD .Neutron interferometry 2245800100015 SAMPLE .Plane-parallel lead plate 5*15 mm2, 2245800100016 thickness 1.897+-0.004 mm, prepared by vacuum melting 2245800100017 and pressing. 204Pb content is 36.6%, 2245800100018 206Pb content is 30.6%, 207Pb content is 13.2%, 2245800100019 208Pb content is 19.6% 2245800100020 COMMENT .Neutrons have wave-lengths lambda =2 angstrom 2245800100021 energy was calculated as H**2/(2m*lambda**2), 2245800100022 H - plank'S constant 2245800100023 ERR-ANALYS (ERR-T) Total error 2245800100024 STATUS .From the text of main reference 2245800100025 HISTORY (20000308C) + + Compiled by S.Maev 2245800100026 (20090506U) JINR-E3 updated with ISINN . 2245800100027 ENDBIB 25 0 2245800100028 COMMON 3 3 2245800100029 EN-APRX MONIT MONIT-ERR 2245800100030 EV FERMI FERMI 2245800100031 2.06E-02 4.149 0.001 2245800100032 ENDCOMMON 3 0 2245800100033 ENDSUBENT 32 0 2245800199999 SUBENT 22458002 20000309 00002245800200001 BIB 2 5 2245800200002 REACTION (82-PB-0(N,THS)82-PB-0,COH,AMP) 2245800200003 ERR-ANALYS (ERR-1) Systematic Error Consisting of Silicon Scatt. 2245800200004 Amplitude Error, Thickness of Si-Plate Error, 2245800200005 Thickness of Lead Metal Sample and Atomic Density 2245800200006 Errors 2245800200007 ENDBIB 5 0 2245800200008 NOCOMMON 0 0 2245800200009 DATA 3 1 2245800200010 DATA ERR-T ERR-1 2245800200011 FERMI FERMI FERMI 2245800200012 9.899 0.027 0.02 2245800200013 ENDDATA 3 0 2245800200014 ENDSUBENT 13 0 2245800299999 SUBENT 22458003 20000309 00002245800300001 BIB 4 7 2245800300002 REACTION (82-PB-204(N,THS)82-PB-204,COH,AMP,,,DERIV) 2245800300003 ASSUMED (ASSUM1,82-PB-206(N,THS)82-PB-206,COH,AMP) 2245800300004 (ASSUM2,82-PB-207(N,THS)82-PB-207,COH,AMP) 2245800300005 (ASSUM3,82-PB-208(N,THS)82-PB-208,COH,AMP) 2245800300006 REL-REF (A,22218004,L.KOESTLER+,J,ZP/A,338,233,1991) 2245800300007 (R,,A.IOFFE,J,ZP/A,348,243,1994) 2245800300008 STATUS (DEP,22458002) 2245800300009 ENDBIB 7 0 2245800300010 COMMON 6 3 2245800300011 ASSUM1 ASSUM1-ERR ASSUM2 ASSUM2-ERR ASSUM3 ASSUM3-ERR 2245800300012 FERMI FERMI FERMI FERMI FERMI FERMI 2245800300013 9.22 0.5 9.28 0.04 9.5 0.022245800300014 ENDCOMMON 3 0 2245800300015 DATA 2 1 2245800300016 DATA ERR-T 2245800300017 FERMI FERMI 2245800300018 10.9 0.087 2245800300019 ENDDATA 3 0 2245800300020 ENDSUBENT 19 0 2245800399999 ENDENTRY 3 0 2245899999999