ENTRY 20307 19840409 00002030700000001 SUBENT 20307001 19840409 00002030700100001 BIB 12 37 2030700100002 INSTITUTE (2JPNTOK) 2030700100003 REFERENCE (J,NP/A,190,284,7208) 2030700100004 (W,KOORI,7211) NUMERICAL VALUES FROM ONE OF THE 2030700100005 AUTHORS. 2030700100006 AUTHOR (A.STRICKER, Y.SAJI, Y.ISHIZAKI, J.KOKAME, H.OGATA, 2030700100007 T.SUEHIRO, I.NONAKA, Y.SUGIYAMA, S.SHIRATO, N.KOORI) 2030700100008 TITLE -THE H2(N,P)2N REACTION AT 50 MEV AND THE NEUTRON- 2030700100009 NEUTRON SCATTERING LENGTH.- 2030700100010 FACILITY (CYCLO) INS CYCLOTRON OF UNIV. OF TOKYO. 2030700100011 INC-SOURCE (P-BE ) PROTON-BERYLLIUM. PROTON ENERGY 51.93 MEV, 2030700100012 RESOLUTION ABOUT 70 KEV. 2030700100013 SAMPLE .POLYETYLENE, ENRICHED (C-D(2))*N ,AND NATURAL 2030700100014 (C-H(2))*N. 2030700100015 .DIAMETER 7.2 MM AND THICKNESS 38.6 MG/CM2 FOR ENRICHED2030700100016 SAMPLE. 2030700100017 METHOD .METHOD BY MULTI-PARTICLE REACTION. 2030700100018 DETECTOR (PROPC) INS MAGNETIC ANALYZER WITH 2030700100019 A 200-PROPORTIONAL COUNTER ARRAY. 2030700100020 .RESOLUTION OF INS ANALYZER IS 50 KEV AND CALIBRATION 2030700100021 IS BETTER THAN +- 20 KEV. 2030700100022 .OVER ALL RESOLUTION FOR BREAK-UP PROTONS IS 600 KEV 2030700100023 IN FWHM. 2030700100024 .2 MM THICK AL-FOIL WAS INSERTED TO STOP D OR HEAVIER 2030700100025 PARTICLES. 2030700100026 (SCIN ) PLASTIC SCINTILLATION COUNTER FOR STOPPING 2030700100027 PROTON PASSING THROUGH PROPORTIONAL COUNTER. 2030700100028 .ANGULAR SPREAD(HWHM) OF FREQUENCY DISTRIBUTION IS 2030700100029 +2.3 AND -2.8 DEG. 2030700100030 PART-DET (P ) PROTONS. 2030700100031 HISTORY (721114C) 2030700100032 (740626E) 2030700100033 (840106U) A.P.T. JAPAN CODE CHANGED TO JPN 2030700100034 (840106E) 2030700100035 CORRECTION .CORRECTED FOR INDIVIDUAL COUNTER EFFICIENCY, SUBTRACT-2030700100036 ED BACKGROUND DUE TO ACCIDENTAL COINCIDENCE (BY GAMMA,2030700100037 BUT DOES NOT EXCEED 2 PERCENT OF TOTAL COUNT) AND 2030700100038 CORRECTED FOR HYDROGEN CONTAMINATION. 2030700100039 ENDBIB 37 0 2030700100040 COMMON 3 3 2030700100041 EN EN-RSL COS 2030700100042 MEV MEV NO-DIM 2030700100043 4.9600E+01 2.2300E-01 9.9784E-01 2030700100044 ENDCOMMON 3 0 2030700100045 ENDSUBENT 44 0 2030700199999 SUBENT 20307002 19831122 00002030700200001 BIB 6 14 2030700200002 REACTION (1-H-2(N,2N)1-H-1,,DA/DE,P) 2030700200003 MONITOR (1-H-1(N,EL)1-H-1,,SIG) 2030700200004 BOWEN ET AL.,THE NUCLEON-NUCLEON INTERACTION 2030700200005 EDITED BY WILSON (INTERSCIENCE,N.Y.,1962)P.211. 2030700200006 COMMENT SINGLET NEUTRON-NEUTRON SCATTERING LENGTH A(S) = 2030700200007 -21.7 +- 1.2 FERMI WAS EXTRACTED ON THE BASIS OF THE 2030700200008 IMPULSE APPROXIMATION. 2030700200009 STATUS .DATA FROM KOORI, 06/11/72. 2030700200010 HISTORY (721114C) 2030700200011 (740626E) 2030700200012 ERR-ANALYS STATISTICAL ERRORS ARE GIVEN, ABOUT 10 PERCENT, I.E. 2030700200013 UNCERTAINTIES IN THE GEOMETRY 8.6 PERCENT, 2030700200014 UNCERTAINTIES IN N-P CROSS SECTION 5.3 PERCENT, 2030700200015 UNCERTAINTIES IN THE MEASURED PROTON COUNTS 3.1 PERC. 2030700200016 ENDBIB 14 0 2030700200017 NOCOMMON 0 0 2030700200018 DATA 4 52 2030700200019 E E-RSL DATA DATA-ERR 2030700200020 MEV MEV MB/SR/MEV MB/SR/MEV 2030700200021 4.3282E+01 3.0000E-01 5.4300E+00 5.1000E-01 2030700200022 4.3374E+01 3.0000E-01 7.3100E+00 5.8000E-01 2030700200023 4.3466E+01 3.0000E-01 4.7300E+00 5.0000E-01 2030700200024 4.3558E+01 3.0000E-01 6.6800E+00 5.7000E-01 2030700200025 4.3650E+01 3.0000E-01 6.0100E+00 5.4000E-01 2030700200026 4.3742E+01 3.0000E-01 7.0800E+00 5.7000E-01 2030700200027 4.3834E+01 3.0000E-01 6.9000E+00 5.6000E-01 2030700200028 4.3927E+01 3.0000E-01 8.0100E+00 6.1000E-01 2030700200029 4.4020E+01 3.0000E-01 7.1100E+00 5.7000E-01 2030700200030 4.4113E+01 3.0000E-01 8.7500E+00 6.3000E-01 2030700200031 4.4206E+01 3.0000E-01 8.4000E+00 6.1000E-01 2030700200032 4.4299E+01 3.0000E-01 8.1200E+00 6.1000E-01 2030700200033 4.4392E+01 3.0000E-01 7.3000E+00 5.8000E-01 2030700200034 4.4485E+01 3.0000E-01 7.6400E+00 5.9000E-01 2030700200035 4.4578E+01 3.0000E-01 7.5800E+00 5.9000E-01 2030700200036 4.4671E+01 3.0000E-01 6.5400E+00 5.4000E-01 2030700200037 4.4764E+01 3.0000E-01 5.7700E+00 5.2000E-01 2030700200038 4.4857E+01 3.0000E-01 6.4300E+00 5.5000E-01 2030700200039 4.4950E+01 3.0000E-01 5.3900E+00 5.1000E-01 2030700200040 4.5043E+01 3.0000E-01 6.0400E+00 5.3000E-01 2030700200041 4.5136E+01 3.0000E-01 4.4500E+00 4.8000E-01 2030700200042 4.5230E+01 3.0000E-01 5.9500E+00 5.3000E-01 2030700200043 4.5333E+01 3.0000E-01 5.8200E+00 5.3000E-01 2030700200044 4.5416E+01 3.0000E-01 5.2600E+00 5.1000E-01 2030700200045 4.5510E+01 3.0000E-01 4.2800E+00 4.6000E-01 2030700200046 4.5603E+01 3.0000E-01 5.1300E+00 4.9000E-01 2030700200047 4.5697E+01 3.0000E-01 5.9500E+00 5.3000E-01 2030700200048 4.5790E+01 3.0000E-01 6.4600E+00 5.6000E-01 2030700200049 4.5883E+01 3.0000E-01 5.8300E+00 5.2000E-01 2030700200050 4.5977E+01 3.0000E-01 5.1900E+00 5.0000E-01 2030700200051 4.6070E+01 3.0000E-01 5.9700E+00 5.4000E-01 2030700200052 4.6165E+01 3.0000E-01 6.8100E+00 5.7000E-01 2030700200053 4.6259E+01 3.0000E-01 7.8500E+00 1.1000E+00 2030700200054 4.6353E+01 3.0000E-01 8.4600E+00 7.7000E-01 2030700200055 4.6447E+01 3.0000E-01 8.3500E+00 6.2000E-01 2030700200056 4.6541E+01 3.0000E-01 9.3800E+00 6.5000E-01 2030700200057 4.6635E+01 3.0000E-01 1.0350E+01 6.9000E-01 2030700200058 4.6729E+01 3.0000E-01 1.0030E+01 6.7000E-01 2030700200059 4.6823E+01 3.0000E-01 1.2990E+01 7.6000E-01 2030700200060 4.6917E+01 3.0000E-01 1.2960E+01 7.6000E-01 2030700200061 4.7011E+01 3.0000E-01 1.5600E+01 8.4000E-01 2030700200062 4.7105E+01 3.0000E-01 1.5350E+01 8.3000E-01 2030700200063 4.7200E+01 3.0000E-01 1.3350E+01 7.8000E-01 2030700200064 4.7295E+01 3.0000E-01 1.0210E+01 6.9000E-01 2030700200065 4.7389E+01 3.0000E-01 6.4600E+00 5.7000E-01 2030700200066 4.7483E+01 3.0000E-01 5.3300E+00 5.1000E-01 2030700200067 4.7577E+01 3.0000E-01 3.2900E+00 4.1000E-01 2030700200068 4.7671E+01 3.0000E-01 6.2400E-01 3.0000E-01 2030700200069 4.7765E+01 3.0000E-01 5.8000E-01 2.8000E-01 2030700200070 4.7859E+01 3.0000E-01 8.0000E-03 3.2000E-01 2030700200071 4.7954E+01 3.0000E-01 4.9700E-01 2.2000E-01 2030700200072 4.8048E+01 3.0000E-01 3.7000E-02 1.7000E-01 2030700200073 ENDDATA 54 0 2030700200074 ENDSUBENT 73 0 2030700299999 ENDENTRY 2 0 2030799999999