ENTRY 20759 19840203 00002075900000001 SUBENT 20759001 19840203 00002075900100001 BIB 18 92 2075900100002 INSTITUTE (2GERMUN) 2075900100003 REFERENCE (J,ZP/A,282,(4),371,770805) DATA ARE GIVEN. 2075900100004 (J,ZN/A,26,391,71) EXPERIMENTAL ARRANGEMENT AND 2075900100005 DETAILS ON SMALL ANGLE SCATTERING METHOD BY 2075900100006 CHRISTIANSEN FILTERS,ARE GIVEN. 2075900100007 (J,ZN/A,31,115,76) DETAILS ON TRANSMISSION 2075900100008 MEASUREMENTS,EXPERIMENTAL ARRANGEMENT AND EVALUATION 2075900100009 PROCEDURE ARE GIVEN. 2075900100010 (J,ZP/A,272,189,75) MEASUREMENT METHOD OF SCATTERING 2075900100011 DENSITY. 2075900100012 AUTHOR (L.KOESTER,K.KNOPF,W.WASCHKOWSKI) 2075900100013 TITLE -SCATTERING OF SLOW NEUTRONS BY THE ISOTOPES OF 2075900100014 CHLORINE- 2075900100015 FACILITY .FRM RESEARCH REACTOR,AT 4 MW THERMAL POWER. 2075900100016 INC-SOURCE (REAC ) NEUTRON BEAM COMING OUT OF A NEUTRON GUIDE 2075900100017 TUBE OF FRM REACTOR. 2075900100018 .FOR TOTAL C.S. MEASUREMENTS,NEUTRONS WERE SELECTED 2075900100019 FROM THE REACTOR BEAM ENERGY SPECTRUM BY MEANS OF 2075900100020 SPECIAL CONTINUOUSLY OPERATING RESONANCE DETECTORS 2075900100021 BUILD UP WITH ROTATING FOILS.NEUTRON RESONANCE MEAN 2075900100022 ENERGY WAS ASSUMED TO BE 1.257 EV FOR RHODIUM FOILS, 2075900100023 AND 5.19 EV FOR SILVER FOILS. 2075900100024 INC-SPECT NOT EXPLICITLY STATED BY AUTHORS,WHO JUST GAVE 2075900100025 THE MEAN NEUTRON WAVE LENGTH,THAT WAS 13 ANGSTROMS. 2075900100026 SAMPLE .FOR COH.SCT.LENGTH MEAS.,CHRISTIANSEN FILTERS 2075900100027 CONSISTED OF A GRAINED POWDER COLUMN OF DRIED AND 2075900100028 CHEMICALLY PURE NACL.MIXED WITH LIQUIDS (C6D6,C7H16, 2075900100029 C8H10)IN DIFFERENT PROPORTIONS.ISOTOPIC ANALYSIS WAS 2075900100030 FOR THE FIRST SAMPLE,99.73 PC OF CL-35 AND 0.27 PC 2075900100031 OF CL-37, 2075900100032 FOR THE SECOND ONE,1.79 PC OF CL-35 AND 98.21 PC OF 2075900100033 CL-37, 2075900100034 FOR BOTH OF THEM DEUTERIUM WAS 99PC IN BENZENE(C6D6), 2075900100035 AND THE WEIGHT OF NA-CL WAS 0.16 GRAM. 2075900100036 .AT 20 DEGREES C.,MEASURED DENSITIES WERE IN G/CM3 2075900100037 2.147 FOR NA-CL35, 2075900100038 2.219 FOR NA-CL37, 2075900100039 0.94835 FOR C6-D6, 2075900100040 1.59403 FOR C-CL4, 2075900100041 1.62264 FOR C2-CL4, 2075900100042 0.86154 FOR C8-H10(CHEMICAL PURITY 99.95 PC), 2075900100043 0.68372 FOR C7-H16. 2075900100044 .FOR TOTAL C.S. MEAS.,SAMPLES OF PURE(99.92 AND 99.98 2075900100045 PC) C-CL4(1.2455E+22 MOLECULES/CM2) AND C2-CL4 2075900100046 (1.176E+22 MOLE./CM2),OF WHICH MEASURED SCATTERING 2075900100047 DENSITIES WERE RESPECTIVELY 28.071E+9 1/CM2 AND 2075900100048 30.414E+9 1/CM2. 2075900100049 SAMPLE TEMPERATURE WAS 20 DEGREES CELSIUS. 2075900100050 METHOD (MOMIX) FOR THE COHERENT SCATTERING LENGTH MEASUREMENTS2075900100051 FOR BOUND ATOMS OF CHLORINE ISOTOPES CL-35 AND CL-37, 2075900100052 METHOD OF SMALL ANGLE SCATTERING OF VERY SLOW NEUTRON 2075900100053 BEAM BY MEANS OF CHRISTIANSEN FILTERS WAS USED. 2075900100054 .FOR EXPERIMENTAL ARRANGEMENT AND DETAILS SEE ZN/A,26, 2075900100055 391,1971. 2075900100056 (EDEG ) ROTATING RHODIUM FOILS(NEUTRON RESONANCE MEAN 2075900100057 ENERGY FOR RH,E=1.257 EV),OR SILVER FOILS(E=5.19EV). 2075900100058 .FOR EXPERIMENTAL ARRANGEMENT,DETAILED DESCRIPTION OF 2075900100059 THIS METHOD,AND EVALUATION PROCEDURE REFER TO ZN/A31. 2075900100060 DETECTOR .FOR COHERENT SCATTERING LENGTH MEASUREMENTS,SEE 2075900100061 Z.NATURFORSCH.26A,391(1971). 2075900100062 .FOR TOTAL C.S. MEAS. SEE Z.NATURFORSCH.31A,115(1976). 2075900100063 ANALYSIS .THE DENSITIES WERE MEASURED PYCNOMETRICALLY AND FOR 2075900100064 THE ISOTOPICALLY ENRICHED COMPOUNDS THEY WERE 2075900100065 CALCULATED FROM THE DENSITY OF NATURAL COMPOUND. 2075900100066 .AUTHORS ASSUMED FOR SCATTERING LENGTH OF SODIUM 2075900100067 3.63+-0.02 FERMI. 2075900100068 MONITOR (1-H-DXX(N,THS),COH,AMP) BENZENE C6D6,WHICH HAS A 2075900100069 CALCULATED SCATTERING DENSITY OF 53.8E+9/CM2. 2075900100070 (1-H-CXX(N,THS),COH,AMP) C8H10,SCAT.DENSITY OF 2075900100071 7.712E+9/CM2,DIRECTLY MEASURED BY MIRROR REFLEXION 2075900100072 USING GRAVITY REFRACTOMETER (FOR DETAILS SEE ZP/A272).2075900100073 (1-H-CXX(N,THS),COH,AMP) C7H16,CALC.SCT.DENSITY WAS 2075900100074 -5.472E+9/CM2. 2075900100075 .THE THREE PRECEEDING LINES REFER TO THE COH.SCT.LENTH 2075900100076 MEASUREMENTS. 2075900100077 .TRANSMISSION,FOR TOTAL CROSS SECTION MEASUREMENTS. 2075900100078 PART-DET (N ) 2075900100079 COMMENT .COHERENT SCATTERING LENGTH ARE DERIVED TOO FOR FREE 2075900100080 NUCLEUS,RESULTS ARE GIVEN,AS WELL ARE FREE SCATTERING 2075900100081 CROSS SECTION OF NATURAL CHLORINE,AT TWO ENERGIES. 2075900100082 .AUTHORS DERIVED FROM THE PRESENT DATA A COMPLET SET 2075900100083 OF SCATTERING PARAMETERS AT LOW ENERGIES,INCLUDING 2075900100084 DATA FOR THE BOUND LEVEL IN CL-35. 2075900100085 STATUS .DATA TAKEN FROM ZP/A,282,371,1977. 2075900100086 HISTORY (771229C) 2075900100087 (780705E) 2075900100088 CORRECTION .IN THE TOTAL C.S.MEASUREMENTS SMALL IMPURITIES AND 2075900100089 AIR DESPLACED BY THE SAMPLE WERE TAKEN INTO ACCOUNT. 2075900100090 ERR-ANALYS .STATISTICAL EXPERIMENTAL ERRORS. 2075900100091 .IN THE CASE OF TOTAL C.S.,UNCERTAINTY OF RESULTS IS 2075900100092 MAINLY DUE TO UNCERTAINTIES OF THE DATA FOR LENGTH 2075900100093 AND TEMPERATURE OF THE SAMPLE. 2075900100094 ENDBIB 92 0 2075900100095 NOCOMMON 0 0 2075900100096 ENDSUBENT 95 0 2075900199999 SUBENT 20759002 19840203 00002075900200001 BIB 2 3 2075900200002 REACTION (17-CL-0(N,TOT),,SIG) 2075900200003 HISTORY (771229C) 2075900200004 (780705E) 2075900200005 ENDBIB 3 0 2075900200006 NOCOMMON 0 0 2075900200007 DATA 3 2 2075900200008 EN DATA DATA-ERR 2075900200009 EV B B 2075900200010 1.2570E+00 2.0240E+01 3.0000E-02 2075900200011 5.1900E+00 1.6900E+01 8.0000E-02 2075900200012 ENDDATA 4 0 2075900200013 ENDSUBENT 12 0 2075900299999 SUBENT 20759003 19840203 00002075900300001 BIB 2 3 2075900300002 REACTION (17-CL-35(N,THS)17-CL-35,COH,AMP)VALUE FOR BOUND ATOMS.2075900300003 HISTORY (771229C) 2075900300004 (780705E) 2075900300005 ENDBIB 3 0 2075900300006 NOCOMMON 0 0 2075900300007 DATA 3 1 2075900300008 EN-DUMMY DATA DATA-ERR 2075900300009 MILLI-EV FERMI FERMI 2075900300010 1.2250E+00 1.1700E+01 9.0000E-02 2075900300011 ENDDATA 3 0 2075900300012 ENDSUBENT 11 0 2075900399999 SUBENT 20759004 19840203 00002075900400001 BIB 2 3 2075900400002 REACTION (17-CL-37(N,THS)17-CL-37,COH,AMP)VALUE FOR BOUND ATOMS 2075900400003 HISTORY (771229C) 2075900400004 (780705E) 2075900400005 ENDBIB 3 0 2075900400006 NOCOMMON 0 0 2075900400007 DATA 3 1 2075900400008 EN-DUMMY DATA DATA-ERR 2075900400009 MILLI-EV FERMI FERMI 2075900400010 1.2250E+00 3.0800E+00 6.0000E-02 2075900400011 ENDDATA 3 0 2075900400012 ENDSUBENT 11 0 2075900499999 ENDENTRY 4 0 2075999999999