ENTRY            20339   19840416                             00002033900000001 
SUBENT        20339001   19840416                             00002033900100001 
BIB                 15         39                                 2033900100002 
INSTITUTE  (2JPNYOK)                                              2033900100003 
REFERENCE  (J,NP/A,215,277,7311) P-ENERGY DIFF.X-SECTION AT 4DEG. 2033900100004 
           (J,JPJ,32,306,7202) SAME X-SECTIONS AT MANY ANGLES.    2033900100005 
           .SEE EXFOR ENTRY 20332.                                2033900100006 
AUTHOR     (S.SHIRATO, K.SAITO, N.KOORI)                          2033900100007 
TITLE      -A DETERMINATION OF THE SINGLET NEUTRON-NEUTRON        2033900100008 
            SCATTERING LENGTH FROM THE H-2(N,P)2N REACTION.-      2033900100009 
FACILITY   (CCW  )    ST.PAUL'S UNIV. COCKCROFT-WALTON ACCELERATOR2033900100010 
INC-SOURCE (D-T  )    DEUTERON-TRITIUM, H3-TI-CU TARGET.          2033900100011 
INC-SPECT   14.1 MEV, ENERGY SPREAD OF INCIDENT NEUTRONS(FWHM) IS 2033900100012 
            320 +- 50 KEV.                                        2033900100013 
SAMPLE      DEUTERATED POLYETHYLENE, 5.09+-0.14 MG/CM2 THICK.     2033900100014 
            .CONTAMINATION OF NORMAL HYDROGEN IS 3.6 PERC. (RESULT2033900100015 
            FROM RECOIL PROTON COUNTING).                         2033900100016 
METHOD      MEASUREMENT OF BREAK-UP PROTON SPECTRA WITH COUNTER-  2033900100017 
            TELESCOPE.                                            2033900100018 
DETECTOR   (TELES)    COUNTER TELESCOPE CONSISTED OF 2 SI(LI)     2033900100019 
            DETECTORS AND 3 GAS PROPORTIONAL COUNTERS.            2033900100020 
           .N-FLUX WAS MONITORED WITH A P-N JUNCTION SI DETECTOR  2033900100021 
            (''THE ALPHA MONITOR'') FOR ASSOCIATED ALPHAS.        2033900100022 
MONITOR    .ABSOLUTE.                                             2033900100023 
            CROSS-SECTIONS WERE ABSOLUTELY DETERMINED FROM COUNT- 2033900100024 
            ING RATE, NUMBER OF D-NUCLEI IN THE RADIATOR, INCIDENT2033900100025 
            N-FLUX AND THE MEASURED PARAMETERS OF EXP. GEOMETRY.  2033900100026 
COMMENT     SINGLET N-N SCATTERING LENGTH, A(N-N) = -18.31+-0.22FM2033900100027 
            WITH EFFECTIVE RANGE, R(N-N) = 2.84FM IS OBTAINED.    2033900100028 
HISTORY    (740116C)                                              2033900100029 
           (740723E)                                              2033900100030 
           (840106U) A.P.T. JAPAN CODE CHANGED TO JPN             2033900100031 
           (840106E)                                              2033900100032 
CORRECTION  CORRECTED FOR BACKGROUND COUNTING, CONTRIBUTION OF    2033900100033 
            HYDROGEN CONTAMINATION IN DEUTERATED POLYETHYLENE     2033900100034 
            RADIATOR, CONTRIBUTION OF BREAK-UP PROTON PRODUCED BY 2033900100035 
            DEGRADED NEUTRONS,  NOT CORRECTED FOR ENERGY LOSSES OF2033900100036 
            PROTONS IN THE RADIATOR (ABOUT 120 KEV AT 11 MEV) AND 2033900100037 
            IN THE COUNTER GAS (ABOUT 80 KEV AT 11 MEV).          2033900100038 
ERR-ANALYS  ONLY STATISTICAL ERROR GIVEN.  OVER-ALL SYSTEMATIC    2033900100039 
            ERR IS +- 3.3 PERCENT, WHICH INCLUDES ERROR IN THE    2033900100040 
            ABSOLUTE DETERMINATION OF NEUTRON FLUX (+- 1.8 PERC.).2033900100041 
ENDBIB              39          0                                 2033900100042 
COMMON               4          3                                 2033900100043 
EN         EN-RSL     COS        ANG-RSL                          2033900100044 
MEV        MEV        NO-DIM     ADEG                             2033900100045 
 1.4100E+01 1.6000E-01 9.9756E-01 2.2000E+00                      2033900100046 
ENDCOMMON            3          0                                 2033900100047 
ENDSUBENT           46          0                                 2033900199999 
SUBENT        20339002   19831128                             00002033900200001 
BIB                  4          8                                 2033900200002 
REACTION   (1-H-2(N,2N)1-H-1,,DA/DE,P)                            2033900200003 
            PROTON ENERGY DIFFERENTIAL CROSS-SECTION FOR D(N,P)2N,2033900200004 
            (MILLI-B/(SR-MEV)).                                   2033900200005 
COMMENT    .AGREES IN SHAPE WITH PREVIOUS MEASUREMENT,            2033900200006 
           .SEE NUCL.PHYS.A120,387 (EXFOR ENTRY 20334).           2033900200007 
STATUS      FROM TABLE 1 OF NUCL.PHYS.A215(1973)277.              2033900200008 
HISTORY    (740116C)                                              2033900200009 
           (740723E)                                              2033900200010 
ENDBIB               8          0                                 2033900200011 
NOCOMMON             0          0                                 2033900200012 
DATA                 3         99                                 2033900200013 
E          DATA       DATA-ERR                                    2033900200014 
MEV        MB/SR/MEV  MB/SR/MEV                                   2033900200015 
 6.0390E+00 9.0300E+00 8.7000E-01                                 2033900200016 
 6.1070E+00 9.3800E+00 8.7000E-01                                 2033900200017 
 6.1750E+00 8.5300E+00 8.6000E-01                                 2033900200018 
 6.2420E+00 9.0100E+00 8.6000E-01                                 2033900200019 
 6.3100E+00 8.4200E+00 8.6000E-01                                 2033900200020 
 6.3770E+00 8.7800E+00 8.5000E-01                                 2033900200021 
 6.4450E+00 7.6800E+00 8.3000E-01                                 2033900200022 
 6.5130E+00 7.4000E+00 8.2000E-01                                 2033900200023 
 6.5800E+00 7.7000E+00 7.9000E-01                                 2033900200024 
 6.6480E+00 7.8700E+00 7.7000E-01                                 2033900200025 
 6.7150E+00 8.1600E+00 7.7000E-01                                 2033900200026 
 6.7830E+00 7.6900E+00 7.3000E-01                                 2033900200027 
 6.8500E+00 9.7400E+00 7.5000E-01                                 2033900200028 
 6.9180E+00 8.7100E+00 7.5000E-01                                 2033900200029 
 6.9860E+00 8.8700E+00 7.6000E-01                                 2033900200030 
 7.0530E+00 8.1000E+00 8.0000E-01                                 2033900200031 
 7.1210E+00 6.9500E+00 7.7000E-01                                 2033900200032 
 7.1880E+00 7.0500E+00 7.4000E-01                                 2033900200033 
 7.2560E+00 8.9300E+00 7.5000E-01                                 2033900200034 
 7.3230E+00 7.8600E+00 7.4000E-01                                 2033900200035 
 7.3910E+00 8.7800E+00 7.5000E-01                                 2033900200036 
 7.4590E+00 6.3400E+00 7.4000E-01                                 2033900200037 
 7.5260E+00 7.3200E+00 7.1000E-01                                 2033900200038 
 7.5940E+00 7.1000E+00 7.2000E-01                                 2033900200039 
 7.6610E+00 7.1500E+00 6.7000E-01                                 2033900200040 
 7.7290E+00 7.1500E+00 6.7000E-01                                 2033900200041 
 7.7960E+00 7.7200E+00 7.0000E-01                                 2033900200042 
 7.8640E+00 7.5800E+00 7.0000E-01                                 2033900200043 
 7.9320E+00 7.1200E+00 7.2000E-01                                 2033900200044 
 7.9990E+00 6.9400E+00 7.0000E-01                                 2033900200045 
 8.0670E+00 6.6800E+00 6.7000E-01                                 2033900200046 
 8.1340E+00 6.3000E+00 6.6000E-01                                 2033900200047 
 8.2020E+00 5.7200E+00 6.6000E-01                                 2033900200048 
 8.2690E+00 6.5100E+00 6.5000E-01                                 2033900200049 
 8.3370E+00 7.0900E+00 6.6000E-01                                 2033900200050 
 8.4050E+00 6.5700E+00 6.5000E-01                                 2033900200051 
 8.4720E+00 7.2900E+00 6.4000E-01                                 2033900200052 
 8.5400E+00 7.2900E+00 6.3000E-01                                 2033900200053 
 8.6070E+00 7.3400E+00 6.1000E-01                                 2033900200054 
 8.6750E+00 6.6400E+00 6.2000E-01                                 2033900200055 
 8.7420E+00 6.1100E+00 6.1000E-01                                 2033900200056 
 8.8100E+00 6.7200E+00 6.4000E-01                                 2033900200057 
 8.8780E+00 7.0400E+00 6.2000E-01                                 2033900200058 
 8.9450E+00 5.7900E+00 6.1000E-01                                 2033900200059 
 9.0130E+00 7.1100E+00 6.0000E-01                                 2033900200060 
 9.0800E+00 7.1300E+00 6.0000E-01                                 2033900200061 
 9.1250E+00 7.7800E+00 6.2000E-01                                 2033900200062 
 9.1480E+00 7.4200E+00 6.0000E-01                                 2033900200063 
 9.2830E+00 7.3100E+00 6.0000E-01                                 2033900200064 
 9.3510E+00 6.5800E+00 5.8000E-01                                 2033900200065 
 9.4180E+00 5.9300E+00 5.8000E-01                                 2033900200066 
 9.4860E+00 6.5400E+00 6.3000E-01                                 2033900200067 
 9.5530E+00 6.3400E+00 6.3000E-01                                 2033900200068 
 9.6210E+00 6.5800E+00 6.2000E-01                                 2033900200069 
 9.6880E+00 5.8000E+00 5.8000E-01                                 2033900200070 
 9.7560E+00 6.6700E+00 5.9000E-01                                 2033900200071 
 9.8230E+00 7.6500E+00 5.7000E-01                                 2033900200072 
 9.8910E+00 7.5000E+00 5.7000E-01                                 2033900200073 
 9.9590E+00 7.6200E+00 5.6000E-01                                 2033900200074 
 1.0026E+01 7.5600E+00 5.8000E-01                                 2033900200075 
 1.0094E+01 8.1300E+00 5.9000E-01                                 2033900200076 
 1.0161E+01 7.1700E+00 5.8000E-01                                 2033900200077 
 1.0229E+01 8.5800E+00 6.1000E-01                                 2033900200078 
 1.0296E+01 8.3600E+00 6.2000E-01                                 2033900200079 
 1.0364E+01 8.3000E+00 6.1000E-01                                 2033900200080 
 1.0432E+01 9.0700E+00 6.3000E-01                                 2033900200081 
 1.0499E+01 9.4600E+00 6.3000E-01                                 2033900200082 
 1.0567E+01 9.2900E+00 6.2000E-01                                 2033900200083 
 1.0634E+01 1.0540E+01 6.4000E-01                                 2033900200084 
 1.0702E+01 1.1540E+01 6.6000E-01                                 2033900200085 
 1.0769E+01 1.2850E+01 6.9000E-01                                 2033900200086 
 1.0837E+01 1.3370E+01 6.9000E-01                                 2033900200087 
 1.0905E+01 1.3080E+01 6.8000E-01                                 2033900200088 
 1.0972E+01 1.4960E+01 7.2000E-01                                 2033900200089 
 1.1040E+01 1.5500E+01 7.2000E-01                                 2033900200090 
 1.1107E+01 1.7540E+01 7.4000E-01                                 2033900200091 
 1.1175E+01 1.9210E+01 7.7000E-01                                 2033900200092 
 1.1242E+01 1.9440E+01 7.7000E-01                                 2033900200093 
 1.1310E+01 2.1000E+01 8.0000E-01                                 2033900200094 
 1.1378E+01 1.9540E+01 7.8000E-01                                 2033900200095 
 1.1445E+01 1.7820E+01 7.5000E-01                                 2033900200096 
 1.1513E+01 1.1660E+01 6.5000E-01                                 2033900200097 
 1.1580E+01 7.8500E+00 5.8000E-01                                 2033900200098 
 1.1648E+01 5.3700E+00 5.1000E-01                                 2033900200099 
 1.1715E+01 2.7200E+00 4.4000E-01                                 2033900200100 
 1.1783E+01 1.6000E+00 3.7000E-01                                 2033900200101 
 1.1851E+01 8.4000E-01 3.7000E-01                                 2033900200102 
 1.1918E+01 2.5000E-01 3.4000E-01                                 2033900200103 
 1.1986E+01 2.0000E-02 3.8000E-01                                 2033900200104 
 1.2053E+01 0.0000E+00 3.9000E-01                                 2033900200105 
 1.2121E+01-3.0000E-01 3.9000E-01                                 2033900200106 
 1.2188E+01-2.0000E-02 3.4000E-01                                 2033900200107 
 1.2256E+01 3.7000E-01 3.4000E-01                                 2033900200108 
 1.2324E+01-2.5000E-01 3.3000E-01                                 2033900200109 
 1.2391E+01 2.3000E-01 3.7000E-01                                 2033900200110 
 1.2459E+01-1.2000E-01 3.3000E-01                                 2033900200111 
 1.2526E+01 4.2000E-01 3.4000E-01                                 2033900200112 
 1.2594E+01 1.2000E-01 3.5000E-01                                 2033900200113 
 1.2661E+01-1.8000E-01 3.4000E-01                                 2033900200114 
ENDDATA            101          0                                 2033900200115 
ENDSUBENT          114          0                                 2033900299999 
ENDENTRY             2          0                                 2033999999999