ENTRY 21688 20090315 22082168800000001 SUBENT 21688001 20090315 22082168800100001 BIB 14 44 2168800100002 INSTITUTE (2TUKCNA) Cekmece nuclear research and training 2168800100003 center, istanbul. 2168800100004 REFERENCE (R,INDC(TUR)-4/L,198005) 2168800100005 AUTHOR (F.Bayvas) 2168800100006 TITLE -Determination of the nuclear scattering amplitude 2168800100007 of uranium-235 by neutron diffraction.- 2168800100008 FACILITY (REAC,2TUKCNA) Tr-1 reactor in conjunction with a 2168800100009 (SPECC) Crytal spectrometer. 2168800100010 The reactor has a power of 1 mega-watt. 2168800100011 INC-SOURCE (REAC ) The neutrons originating from the reactor 2168800100012 are scattered on the (111) plane of a copper crystal 2168800100013 which serves as a monochromator. The wavelength is 2168800100014 1.0824 angstrom. 2168800100015 SAMPLE .Several U samples are used with different 2168800100016 enrichments. All samples were metallic bars 2168800100017 showing the powder character. They are described 2168800100018 in table 1 of the main reference 2168800100019 -------------------------------------------------- 2168800100020 sample enrichment weight diameter height 2168800100021 (percent) (gram) (cm) (cm) 2168800100022 -------------------------------------------------- 2168800100023 natural 0.71 75.039 1.270 3.175 2168800100024 U-2 10. 75.808 1.271 3.178 2168800100025 U-1 40. 75.604 1.270 3.176 2168800100026 U-4 80. 74.861 1.270 3.178 2168800100027 -------------------------------------------------- 2168800100028 .The samples are at room temperature. They are 2168800100029 metallic andin alpha-phase with a base-centered 2168800100030 orthorombic crystal structure. 2168800100031 .The sample were obtained from cbnm,geel (belgium). 2168800100032 METHOD (DIFFR) The diffracted intensity is measured. 2168800100033 DETECTOR (BF3 ) Proportional counter, containing 96 percent 2168800100034 enriched B-F(3). Its sensitive length is 48.26 cm 2168800100035 and its pressure 40.6 cm Hg. 2168800100036 (PROPC) A small proportional counter is used to 2168800100037 monitor the neutron flux. 2168800100038 MONITOR (28-NI-0(N,THS)28-NI-0,BA/COH,AMP) 2168800100039 STATUS .Data taken from main reference. 2168800100040 HISTORY (19801021C) G.C. 2168800100041 (19801104E) 2168800100042 (20090218A) Reference code changed from tuk to tur 2168800100043 (20090315U) Last checking has been done. 2168800100044 CORRECTION .Background. 2168800100045 ERR-ANALYS .No details given. 2168800100046 ENDBIB 44 0 2168800100047 COMMON 3 3 2168800100048 EN TEMP MONIT 2168800100049 EV DEG-C CM 2168800100050 7.E-02 2.E+01 1.04E-12 2168800100051 ENDCOMMON 3 0 2168800100052 ENDSUBENT 51 0 2168800199999 SUBENT 21688002 19801104 00002168800200001 BIB 3 4 2168800200002 REACTION (74-W-0(N,THS),BA/COH,AMP) 2168800200003 STATUS .DATA TAKEN FROM MAIN REFERENCE. 2168800200004 HISTORY (801021C) G.C. 2168800200005 (801104E) 2168800200006 ENDBIB 4 0 2168800200007 NOCOMMON 0 0 2168800200008 DATA 2 1 2168800200009 DATA DATA-ERR 2168800200010 CM CM 2168800200011 4.7300E-13 1.1000E-14 2168800200012 ENDDATA 3 0 2168800200013 ENDSUBENT 12 0 2168800299999 SUBENT 21688003 19801104 00002168800300001 BIB 3 4 2168800300002 REACTION (92-U-235(N,THS)92-U-235,BA/COH,AMP) 2168800300003 STATUS .DATA TAKEN FROM MAIN REFERENCE. 2168800300004 HISTORY (801021C) G.C. 2168800300005 (801104E) 2168800300006 ENDBIB 4 0 2168800300007 NOCOMMON 0 0 2168800300008 DATA 2 1 2168800300009 DATA DATA-ERR 2168800300010 CM CM 2168800300011 1.0500E-12 5.0000E-14 2168800300012 ENDDATA 3 0 2168800300013 ENDSUBENT 12 0 2168800399999 ENDENTRY 3 0 2168899999999