ENTRY A0876 20110325 A071A087600000001 SUBENT A0876001 20110325 A071A087600100001 BIB 12 44 A087600100002 TITLE Production and multiplication of neutrons in lead A087600100003 targets induced by proton above 1 GeV. A087600100004 AUTHOR (V.I.Yurevich, R.M.Yakovlev, V.G.Lyapin) A087600100005 INSTITUTE (4ZZZDUB) A087600100006 (4RUSRI) A087600100007 REFERENCE (J,YF,74,271,2011) A087600100008 (J,PAN,74,253,2011) English translation A087600100009 ADD-RES (COMP).Moving Source Model A087600100010 DETECTOR (SCIN) plastic scintillators A087600100011 (MWPC) two multiwire proportional chambers A087600100012 The neutrons were recorded by neutron detectors of A087600100013 three types. The low-energy neutron-spectrum section A087600100014 between 0.5 and 3 MeV was measured at an angle of 120- A087600100015 degree in experiments with beryllium and lead targets A087600100016 by means of detector D1 based on a thin stilbene A087600100017 crystal. The region of energies above 2 to 3 MeV was A087600100018 studied with the aid of detectors D2 based on stilbene A087600100019 crystals of a larger volume and detectors D3 based on aA087600100020 thick plastic scintillator. The distances from the A087600100021 target to the neutron detectors were 64 cm for D1, A087600100022 115 to 125 cm for D2 and 200 to 220 cm for D3. A087600100023 Veto counters based on thin plastic scintillators A087600100024 and arranged in front of the neutron detectors were A087600100025 used to discriminate charged particles. A087600100026 FACILITY (SYNCH,4ZZZDUB) A087600100027 METHOD (TOF) A087600100028 CORRECTION *By author*.The total correction for the loss A087600100029 of neutrons because of interaction in the target, A087600100030 the veto-detector scintillators and the lead layer in A087600100031 front of the neutron detector and because of scatteringA087600100032 into the detector as the neutrons traverse the target A087600100033 was 11%, on average. This was not so only for a number A087600100034 of measurements with Be, Al, and Cu targets, where thisA087600100035 correction was as large as 27%. A087600100036 ERR-ANALYS (DATA-ERR,16.,25.).The systematic error associated A087600100037 with determining the number of target atoms and the A087600100038 number of protons that hit the target, as well as with A087600100039 taking into account the background, ranged from 16 A087600100040 to 25% for various angles and detectors. A087600100041 STATUS The letter was sent to V.I.Yurevich 25.03.2011 A087600100042 and received the answer 31.03.2011- A087600100043 I am sorry,the numerical data are not available for A087600100044 free distribution-Vladimir Yurevich. A087600100045 HISTORY (20110328C) SB A087600100046 ENDBIB 44 0 A087600100047 COMMON 1 3 A087600100048 EN A087600100049 GEV A087600100050 2. A087600100051 ENDCOMMON 3 0 A087600100052 ENDSUBENT 51 0 A087600199999 SUBENT A0876002 20110328 A071A087600200001 BIB 2 2 A087600200002 REACTION (4-BE-9(P,X)0-NN-1,,DA/DE) fig 4 A087600200003 SAMPLE Be-target, thickness along the beam 46.2 mm, was used. A087600200004 ENDBIB 2 0 A087600200005 NOCOMMON 0 0 A087600200006 NODATA 0 0 A087600200007 ENDSUBENT 6 0 A087600299999 SUBENT A0876003 20110328 A071A087600300001 BIB 2 2 A087600300002 REACTION (13-AL-27(P,X)0-NN-1,,DA/DE) fig 4 A087600300003 SAMPLE Al-target, thickness along the beam 17.3 mm, was used. A087600300004 ENDBIB 2 0 A087600300005 NOCOMMON 0 0 A087600300006 NODATA 0 0 A087600300007 ENDSUBENT 6 0 A087600399999 SUBENT A0876004 20110328 A071A087600400001 BIB 2 3 A087600400002 REACTION (29-CU-0(P,X)0-NN-1,,DA/DE) fig 4 A087600400003 SAMPLE Cu-target, thickness along the beam 11.4 mm and A087600400004 15.6 mm was used. A087600400005 ENDBIB 3 0 A087600400006 NOCOMMON 0 0 A087600400007 NODATA 0 0 A087600400008 ENDSUBENT 7 0 A087600499999 SUBENT A0876005 20110328 A071A087600500001 BIB 2 2 A087600500002 REACTION (48-CD-0(P,X)0-NN-1,,DA/DE) fig 4 A087600500003 SAMPLE Cd-target, thickness along the beam 12 mm was used. A087600500004 ENDBIB 2 0 A087600500005 NOCOMMON 0 0 A087600500006 NODATA 0 0 A087600500007 ENDSUBENT 6 0 A087600599999 SUBENT A0876006 20110328 A071A087600600001 BIB 2 2 A087600600002 REACTION (82-PB-0(P,X)0-NN-1,,DA/DE) fig 4 A087600600003 SAMPLE Pb-target, thickness along the beam 6.9,12 mm was used.A087600600004 ENDBIB 2 0 A087600600005 NOCOMMON 0 0 A087600600006 NODATA 0 0 A087600600007 ENDSUBENT 6 0 A087600699999 SUBENT A0876007 20110328 A071A087600700001 BIB 2 2 A087600700002 REACTION (82-PB-208(P,X)0-NN-1,,PY) FIG.13 A087600700003 STATUS (DEP,A0876006) A087600700004 ENDBIB 2 0 A087600700005 NOCOMMON 0 0 A087600700006 NODATA 0 0 A087600700007 ENDSUBENT 6 0 A087600799999 ENDENTRY 7 0 A087699999999