ENTRY 21787 20211225 23062178700000001 SUBENT 21787001 20211225 23062178700100001 BIB 16 51 2178700100002 TITLE On the scattering of fast neutrons 2178700100003 by protons and deuterons 2178700100004 AUTHOR (M.Ageno, E.Amaldi, D.Bocciarelli, G.C.Trabacchi) 2178700100005 INSTITUTE (2ITYISR) 2178700100006 REFERENCE (J,PR,71,20,1947) 2178700100007 REL-REF (M,,E.Amaldi+,J,NWS,30,582,1942) Experimental details. 2178700100008 (M,,E.Amaldi+,J,RIC,13,502,1942) Experimental details. 2178700100009 (M,,E.O.Salant+,J,PR,55,984(2),1939) 2178700100010 (M,,E.O.Salant+,J,PR,57,1075(104),1940) 2178700100011 FACILITY (ACCEL,2ITYISR) Li,B,and Be targets were bombarded with2178700100012 deuterons of 0.8 MeV produced by the 1 MeV equipment of2178700100013 the Instituto Superiore di Ssanita. 2178700100014 INC-SOURCE (D-BE) For neutrons of 4.1 MeV. 2178700100015 Deuteron-boron for neutrons of 12.5 MeV. 2178700100016 (D-LI) For neutrons of 13.5 MeV. 2178700100017 SAMPLE Light paraffin (C(32)-H(66),assumed by the author) 2178700100018 Heavy paraffin (C(35)-H(72),assumed by the author) 2178700100019 Graphite. 2178700100020 The thickness of the samples varied between 2178700100021 1.4 and 15.9 g/cm2 2178700100022 METHOD (COINC) 2178700100023 recoil protons fast enough to pass an Al-absorber were2178700100024 detected in a coincidence telescope. The energy of 2178700100025 the protons was in a narrow energy interval close to 2178700100026 the end of the source neutron spectrum. The 2178700100027 minimum energy was defined by the absorber thickness. 2178700100028 Thus, nearly monoenergetic neutrons with 4.1MeV 2178700100029 12.5MeV and 13.5MeV could be produced. 2178700100030 For the highest neutron energy an additional 2178700100031 detection method was used to check the results 2178700100032 obtained by the above described method. 2178700100033 Neutrons from the (Li-d) source passing the 2178700100034 scattering foil were detected by means of the 2178700100035 9.9 min activity produced in copper according 2178700100036 to the Cu-63(n,2n)Cu-62 reaction (see REL-REF). 2178700100037 Recoil protons projected in the forward direction. 2178700100038 DETECTOR (COIN,PROPC,PROPC,PROPC) 2178700100039 coincidence set of three proportional counters. 2178700100040 ANALYSIS The given energy is a mean energy 2178700100041 FLAG (1.) For the (Li+d) neutrons the results obtained 2178700100042 by using two different detection methods has been 2178700100043 averaged, although the corresponding mean energies 2178700100044 are slightly different (13.5 MeV and 14.0 MeV). 2178700100045 ADD-RES (THEO) Comparison of the neutron-proton and 2178700100046 neutron-deuteron collision. 2178700100047 ERR-ANALYS (ERR-S) Statistical error. Detailed error 2178700100048 analysis is missing. 2178700100049 STATUS (TABLE) Table III from Phys.Rev.,71(1947)20 2178700100050 HISTORY (19820825C) BN. 2178700100051 (20211225U) SD:Updated to new date formats,lower case. 2178700100052 Institute code updated. Corrections in all Subents. 2178700100053 ENDBIB 51 0 2178700100054 NOCOMMON 0 0 2178700100055 ENDSUBENT 54 0 2178700199999 SUBENT 21787002 20211225 23062178700200001 BIB 2 3 2178700200002 REACTION (6-C-12(N,EL)6-C-12,,SIG) 2178700200003 HISTORY (20211225U) SD: STATUS moved to Subent 001. 2178700200004 DATA-ERR -> ERR-S. 2178700200005 ENDBIB 3 0 2178700200006 NOCOMMON 0 0 2178700200007 DATA 4 3 2178700200008 EN DATA ERR-S FLAG 2178700200009 MEV B B NO-DIM 2178700200010 4.1 1.99 0.04 2178700200011 12.5 1.4 0.12 2178700200012 13.5 1.23 0.015 1. 2178700200013 ENDDATA 5 0 2178700200014 ENDSUBENT 13 0 2178700299999 SUBENT 21787003 20211225 23062178700300001 BIB 2 3 2178700300002 REACTION (1-H-2(N,EL)1-H-2,,SIG) 2178700300003 HISTORY (20211225U) SD: STATUS moved to Subent 001. 2178700300004 DATA-ERR -> ERR-S. 2178700300005 ENDBIB 3 0 2178700300006 NOCOMMON 0 0 2178700300007 DATA 4 3 2178700300008 EN DATA ERR-S FLAG 2178700300009 MEV B B NO-DIM 2178700300010 4.1 1.79 0.08 2178700300011 12.5 0.78 0.12 2178700300012 13.5 0.864 0.028 1. 2178700300013 ENDDATA 5 0 2178700300014 ENDSUBENT 13 0 2178700399999 SUBENT 21787004 20211225 23062178700400001 BIB 2 3 2178700400002 REACTION (1-H-1(N,EL)1-H-1,,SIG) 2178700400003 HISTORY (20211225U) SD: STATUS moved to Subent 001. 2178700400004 DATA-ERR -> ERR-S. 2178700400005 ENDBIB 3 0 2178700400006 NOCOMMON 0 0 2178700400007 DATA 4 3 2178700400008 EN DATA ERR-S FLAG 2178700400009 MEV B B NO-DIM 2178700400010 4.1 1.73 0.06 2178700400011 12.5 0.69 0.11 2178700400012 13.5 0.694 0.019 1. 2178700400013 ENDDATA 5 0 2178700400014 ENDSUBENT 13 0 2178700499999 ENDENTRY 4 0 2178799999999