ENTRY 21888 19840807 00002188800000001 SUBENT 21888001 19840807 00002188800100001 BIB 14 49 2188800100002 INSTITUTE (2ITYPAD) 2188800100003 REFERENCE (J,NC/A,70,(4),402,8208) 2188800100004 AUTHOR (L.DRIGO,G.TORNIELLI) 2188800100005 TITLE -MEASUREMENTS OF THE ANALYSING POWER OF LI-6 2188800100006 FOR LOW-ENERGY NEUTRON SCATTERING- 2188800100007 FACILITY (VDG ,2ITYPAD) 7.5 MEV ACCELERATOR AT THE NATIONAL 2188800100008 LABORATORY IN LEGNARO. 2188800100009 INC-SOURCE (POLNS,D-C12) REACTION ANGLES 20 ADEG AND 25 ADEG. 2188800100010 THE REACTION PRODUCES A SECOND GROUP OF NEUTRONS 2188800100011 CORRESPONDING TO THE FIRST EXCITED LEVEL (2.37 MEV) 2188800100012 OF THE N-13 NUCLEUS MAKING POSSIBLE TO MEASURE 2188800100013 AT TWO NEUTRON ENERGIES SIMULTANEOUSLY. 2188800100014 .THE CARBON TARGET WAS OBTAINED BY DEPOSITION 2188800100015 OF A COLLODIAL GRAPHITE SUSPENSION ON A TANTALUM 2188800100016 BACKING. THE CARBON THICKNESS WAS ABOUT 1 MG/CM-SQ. 2188800100017 REFERENCES FOR NEUTRON POLARIZATION 2188800100018 VALUES GIVEN IN 'ANALYSIS'. 2188800100019 SAMPLE .LITHIUM METAL (95 PER CENT OF LI-6) CONTAINED IN A 2188800100020 THIN-WALLED ALUMINUM CAN. THE SHAPE OF THE SAMPLE WAS 2188800100021 CYLINDRICAL WITH A DIAMETER OG 5.5 CM AND A HIGHT OF 2188800100022 15 CM. THE DISTANCE BETWEEN THE NEUTRON SOURCE AND 2188800100023 THE LITHIUM SAMPLE WAS 110 CM. 2188800100024 METHOD (TOF ) FOR DETAILS SEE (J,NP/A,181,1,177,7212). 2188800100025 THE EXPERIMENTAL APPARATUS MADE IT POSSIBLE TO 2188800100026 MEASURE AT SIX ANGLES BETWEEN 25 ADEG AND 135 ADEG 2188800100027 AT THE SAME TIME. 2188800100028 FOR EACH ENERGY THE MEASUREMENT CONSISTED OF SEVERAL 2188800100029 RUNS ALTERNATIVELY ON THE RIGHT AND ON THE LEFT OF 2188800100030 THE PRIMARY NEUTRON BEAM. FOR EACH RUN A BACKGROUND 2188800100031 COUNTING WAS PERFORMED WITH AN EMPTY ALUMINUM CAN. 2188800100032 DETECTOR (SCIN ) 12 NE213 SCINTILLATORS. 2188800100033 ANALYSIS .ANALYSIS OF TIME-OF-FLIGHT SPECTRA WAS ACCOMPLISHED 2188800100034 WITH A HP1000 COMPUTER SYSTEM. 2188800100035 THE NEUTRON POLARISATION VALUES USED IN EVALUATION OF 2188800100036 ANALYSING POWERS ARE LISTED IN TABLE I IN THE MAIN 2188800100037 REFERENCE AND WERE TAKEN FROM THE FOLLOWING REFERENCES2188800100038 (J,PR,141,825,66) EN - 2.80 AND 3.19 MEV 2188800100039 (J,PR,150,830,66) EN - 1.48,1.88,3.99,4.38 MEV 2188800100040 (J,PR,173,952,68) EN - 3.50 MEV 2188800100041 (B,R.L.WALTER,PHENOM.IN NUCL.PHYS.,P317,1971)EN - 2.432188800100042 PART-DET (N ) 2188800100043 STATUS .DATA TAKEN FROM MAIN REFERENCE. 2188800100044 HISTORY (831118C) A.L. 2188800100045 (840202E) 2188800100046 CORRECTION .FOR 2188800100047 - BACKGROUND 2188800100048 - MULTIPLE SCATTERING AND FINITE ANGULAR 2188800100049 RESOLUTION USING THE MONTE CARLO CODE 'MULTPOL' 2188800100050 DESCRIBED IN (J,NIM,57,197,67). 2188800100051 ENDBIB 49 0 2188800100052 NOCOMMON 0 0 2188800100053 ENDSUBENT 52 0 2188800199999 SUBENT 21888002 19840202 00002188800200001 BIB 4 11 2188800200002 REACTION (3-LI-6(N,EL)3-LI-6,,POL/DA,,ANA) 2188800200003 STATUS .DATA TAKEN FROM TABLE III AND V IN MAIN REFERENCE. 2188800200004 HISTORY (831118C) A.L. 2188800200005 (840202E) 2188800200006 ERR-ANALYS (ERR-T) QUADRATIC COMBINATION OF 2188800200007 - UNCERTAINTIES DERIVED FROM STATISTICS 2188800200008 - ESTIMATED UNCERTAINTIES IN BACKGROUND AND 2188800200009 - UNCERTAINTIES DERIVED FROM MONTE CARLO 2188800200010 CALCULATIONS. (THESE UNCERTAINTIES WERE NEGLIGIBLE 2188800200011 AT 'EN' LOWER THAN 2 MEV IN COMPARISON WITH 2188800200012 EXPERIMENTAL ERRORS. 2188800200013 ENDBIB 11 0 2188800200014 NOCOMMON 0 0 2188800200015 DATA 5 43 2188800200016 EN EN-ERR ANG DATA ERR-T 2188800200017 MEV MEV ADEG NO-DIM NO-DIM 2188800200018 1.4800E+00 8.0000E-02 2.5000E+01-8.0000E-02 6.0000E-02 2188800200019 1.4800E+00 8.0000E-02 4.5000E+01-2.6000E-01 8.0000E-02 2188800200020 1.4800E+00 8.0000E-02 6.5000E+01-2.5000E-01 1.1000E-01 2188800200021 1.4800E+00 8.0000E-02 9.0000E+01-1.8000E-01 1.3000E-01 2188800200022 1.4800E+00 8.0000E-02 1.1500E+02 2.2000E-01 1.9000E-01 2188800200023 1.8800E+00 9.0000E-02 2.5000E+01-2.0000E-01 2.8000E-01 2188800200024 1.8800E+00 9.0000E-02 4.5000E+01-3.0000E-01 2.9000E-01 2188800200025 1.8800E+00 9.0000E-02 6.5000E+01-2.9000E-01 2.7000E-01 2188800200026 2.4300E+00 7.0000E-02 2.5000E+01-2.2000E-01 4.0000E-02 2188800200027 2.4300E+00 7.0000E-02 4.5000E+01-3.5000E-01 5.0000E-02 2188800200028 2.4300E+00 7.0000E-02 6.5000E+01-4.7000E-01 7.0000E-02 2188800200029 2.4300E+00 7.0000E-02 9.0000E+01-1.8000E-01 7.0000E-02 2188800200030 2.4300E+00 7.0000E-02 1.1500E+02 3.8000E-01 8.0000E-02 2188800200031 2.4300E+00 7.0000E-02 1.3500E+02 3.5000E-01 1.2000E-01 2188800200032 2.8000E+00 9.0000E-02 2.5000E+01-1.2000E-01 4.0000E-02 2188800200033 2.8000E+00 9.0000E-02 4.5000E+01-3.1000E-01 6.0000E-02 2188800200034 2.8000E+00 9.0000E-02 6.5000E+01-3.9000E-01 6.0000E-02 2188800200035 2.8000E+00 9.0000E-02 9.0000E+01 8.0000E-02 8.0000E-02 2188800200036 2.8000E+00 9.0000E-02 1.1500E+02 3.5000E-01 1.0000E-01 2188800200037 2.8000E+00 9.0000E-02 1.3500E+02 2.7000E-01 1.4000E-01 2188800200038 3.1900E+00 8.0000E-02 2.5000E+01-1.5000E-01 4.0000E-02 2188800200039 3.1900E+00 8.0000E-02 4.5000E+01-3.7000E-01 6.0000E-02 2188800200040 3.1900E+00 8.0000E-02 6.5000E+01-4.7000E-01 8.0000E-02 2188800200041 3.1900E+00 8.0000E-02 9.0000E+01 0.0000E+00 1.1000E-01 2188800200042 3.1900E+00 8.0000E-02 1.1500E+02 6.0000E-01 1.2000E-01 2188800200043 3.1900E+00 8.0000E-02 1.3500E+02 5.4000E-01 1.5000E-01 2188800200044 3.5000E+00 9.0000E-02 2.5000E+01-9.0000E-02 3.0000E-02 2188800200045 3.5000E+00 9.0000E-02 4.5000E+01-2.3000E-01 4.0000E-02 2188800200046 3.5000E+00 9.0000E-02 6.5000E+01-4.3000E-01 6.0000E-02 2188800200047 3.5000E+00 9.0000E-02 9.0000E+01 3.0000E-02 8.0000E-02 2188800200048 3.5000E+00 9.0000E-02 1.1500E+02 4.1000E-01 1.0000E-01 2188800200049 3.5000E+00 9.0000E-02 1.3500E+02 3.4000E-01 1.2000E-01 2188800200050 3.9900E+00 8.0000E-02 2.5000E+01-1.8000E-01 4.0000E-02 2188800200051 3.9900E+00 8.0000E-02 4.5000E+01-3.0000E-01 6.0000E-02 2188800200052 3.9900E+00 8.0000E-02 6.5000E+01-4.6000E-01 1.2000E-01 2188800200053 3.9900E+00 8.0000E-02 9.0000E+01-2.0000E-01 1.6000E-01 2188800200054 3.9900E+00 8.0000E-02 1.1500E+02 4.6000E-01 1.8000E-01 2188800200055 3.9900E+00 8.0000E-02 1.3500E+02 4.0000E-01 2.2000E-01 2188800200056 4.3800E+00 9.0000E-02 2.5000E+01-9.0000E-02 4.0000E-02 2188800200057 4.3800E+00 9.0000E-02 4.5000E+01-2.2000E-01 7.0000E-02 2188800200058 4.3800E+00 9.0000E-02 6.5000E+01-4.0000E-01 1.3000E-01 2188800200059 4.3800E+00 9.0000E-02 9.0000E+01-5.0000E-02 2.4000E-01 2188800200060 4.3800E+00 9.0000E-02 1.1500E+02 3.5000E-01 2.6000E-01 2188800200061 ENDDATA 45 0 2188800200062 ENDSUBENT 61 0 2188800299999 SUBENT 21888003 19840807 00002188800300001 BIB 4 6 2188800300002 REACTION (3-LI-6(N,INL)3-LI-6,PAR,POL/DA,,ANA) 2188800300003 STATUS .DATA TAKEN FROM TABLE IV IN MAIN REFERENCE. 2188800300004 HISTORY (831118C) A.L. 2188800300005 (840202E) 2188800300006 ERR-ANALYS (DATA-ERR) UNCERTAINTIES DERIVED FROM STATISTICS AND 2188800300007 ESTIMATED UNCERTAINTIES IN BACKGROUND. 2188800300008 ENDBIB 6 0 2188800300009 COMMON 1 3 2188800300010 E-EXC 2188800300011 MEV 2188800300012 2.1800E+00 2188800300013 ENDCOMMON 3 0 2188800300014 DATA 5 7 2188800300015 EN EN-ERR ANG DATA DATA-ERR 2188800300016 MEV MEV ADEG NO-DIM NO-DIM 2188800300017 3.1900E+00 8.0000E-02 2.5000E+01 4.0000E-02 1.3000E-01 2188800300018 3.5000E+00 9.0000E-02 2.5000E+01 3.0000E-02 1.2000E-01 2188800300019 3.5000E+00 9.0000E-02 4.5000E+01 4.0000E-02 1.9000E-01 2188800300020 3.9900E+00 8.0000E-02 2.5000E+01-1.3000E-01 1.6000E-01 2188800300021 3.9900E+00 8.0000E-02 4.5000E+01-3.0000E-01 1.6000E-01 2188800300022 4.3800E+00 9.0000E-02 2.5000E+01-7.0000E-02 2.8000E-01 2188800300023 4.3800E+00 9.0000E-02 4.5000E+01 1.8000E-01 3.7000E-01 2188800300024 ENDDATA 9 0 2188800300025 ENDSUBENT 24 0 2188800399999 ENDENTRY 3 0 2188899999999