ENTRY 41603 20141201 41664160300000001 SUBENT 41603001 20141201 41664160300100001 BIB 13 35 4160300100002 INSTITUTE (4ZZZDUB) K.Cotorobai,A.P.Gasparian, A.P.Ierusalimov, 4160300100003 D.K.Kopylova,M.S.Levitsky,V.I.Moroz,A.V.Nikitin, 4160300100004 Yu.A.Troyan. 4160300100005 (3RUMBUU) K.Besliu. 4160300100006 A.Abdivaliev - from Leninabad State Pedagogical 4160300100007 Institute, Leninabad, USSR. 4160300100008 REFERENCE (J,NP/B,99,445,1975) 4160300100009 AUTHOR (A.Abdivaliev,K.Besliu,K.Cotorobai,A.P.Gasparian, 4160300100010 A.P.Ierusalimov,D.K.Kopylova,M.S.Levitsy,V.I.Moroz, 4160300100011 A.V.Nikitin,Yu.A.Troyan) 4160300100012 TITLE Topological cross sections of np interactions in the 4160300100013 interval of monochromatic neutron momenta 1-5 GeV/c . 4160300100014 REL-REF (I,,A.V.Belogonov+,J,NIM,20,114,1963) 4160300100015 A Liquid Hydrogen Bubble Chamber details. 4160300100016 FACILITY (SYNCH,4ZZZDUB) 4160300100017 INC-SOURCE Neutron beam was produced by stripping of deuterons4160300100018 on 1cm thick Al target. 4160300100019 Neutrons outgoing at 0 deg angle relative to deuteron 4160300100020 beam were collimated by two steel collimators to obtain4160300100021 5x4.7 cm2 size on the front wall of the chamber. 4160300100022 Other particles were absent due to cleaning. 4160300100023 Distance from target to the chamber 140m. 4160300100024 INC-SPECT Quasi-monochromatic neutrons. 4160300100025 Spectrum for 3.83+-0.15 GeV/c is given on Fig.2 of 4160300100026 J,NP/B,99,445,1975. 4160300100027 SAMPLE Hydrogen bubble chamber - HBC. 4160300100028 METHOD About 200000 pictures for 8 neutron momenta, 4160300100029 more 1.5 million events of np interaction. 4160300100030 DETECTOR (BUBLC) 1 m hydrogen bubble chamber. 4160300100031 ADD-RES (THEO) The suggested pole model includes exchange by 4160300100032 PI-meson, RHO-meson and in addition allows for the 4160300100033 peripheral exchange mechanism. This model permits one 4160300100034 to get a good description of the data of elastic 4160300100035 np-scattering at the energy region 1-10 GeV. 4160300100036 HISTORY (20141201C) M.M. 4160300100037 ENDBIB 35 0 4160300100038 NOCOMMON 0 0 4160300100039 ENDSUBENT 38 0 4160300199999 SUBENT 41603002 20141201 41664160300200001 BIB 8 37 4160300200002 REACTION 1(1-H-1(N,TOT),,SIG,,MSC) 4160300200003 3(1-H-1(N,TOT),,SIG,,MSC) 4160300200004 5(1-H-1(N,TOT),,SIG,,MSC) 4160300200005 7(1-H-1(N,TOT),,SIG,,MSC) 4160300200006 Topological cross sections of 1-,3-,5-,7-prong events 4160300200007 in detected stars. 4160300200008 MONITOR (1-H-1(N,TOT),,SIG) 4160300200009 The total number of stars for each energy was 4160300200010 normalized to the total cross section of np interaction4160300200011 which is known with accuracy about 1%. 4160300200012 MONIT-REF (,O.Benary+,R,UCRL-2000,1970) A compilation. 4160300200013 METHOD Each series of films, obtained in an explosures of the4160300200014 chamber to one momentum neutrons, was scanned 3 times.4160300200015 As result, in different scanning the values of Ni/Ntot 4160300200016 for i=1,3,5,and for all momenta were found to coincide 4160300200017 within one statistical error. 4160300200018 ANALYSIS Topological cross sections of 1-,3-,5-,7-prong events 4160300200019 were defined as: 4160300200020 SIGi=Ni*(SIGtot/Ntot), where 4160300200021 i = 1,3,5,7 ; 4160300200022 Ni - number of events of this topology. 4160300200023 The incident neutron momentum was estimated by 4160300200024 selecting the reaction np -> p p PI- whose total 4160300200025 secondary particle momentum is equal to the neutron 4160300200026 momentum. 4160300200027 CORRECTION Correction for backgrounds due to: 4160300200028 (1) "glass-bottom" events, 4160300200029 (2) low energy neutrons, 4160300200030 (3) secondary neutrons. 4160300200031 Inc.neutr.mometum (1) (2) (3) Total correction4160300200032 1.25 5.% 6.% 6.5% 17.5+-1. % 4160300200033 3.83 10.% 12.% 11.% 33+-2 % 4160300200034 5.09 12.% 14.5% 12.5% 39.+-2 % 4160300200035 values for i=1 ( one-pong events). 4160300200036 ERR-ANALYS (DATA-ERR) Includes uncertainty of corrections. 4160300200037 MOM-ERR - dispersion . 4160300200038 STATUS (TABLE) Table 1 of J,NP/B,99,445,1975. 4160300200039 ENDBIB 37 0 4160300200040 NOCOMMON 0 0 4160300200041 DATA 10 8 4160300200042 MOM MOM-ERR DATA 1DATA-ERR 1DATA 3DATA-ERR 34160300200043 DATA 5DATA-ERR 5DATA 7DATA-ERR 7 4160300200044 GEV/C GEV/C MB MB MB MB 4160300200045 MB MB MB MB 4160300200046 1.25 0.05 36.1 0.6 1.45 0.06 4160300200047 4160300200048 1.42 0.05 36.5 0.6 2.50 0.10 4160300200049 4160300200050 1.72 0.07 35.9 0.6 4.10 0.15 4160300200051 4160300200052 2.23 0.09 33.3 0.6 8.70 0.30 4160300200053 4160300200054 3.10 0.12 29.2 0.6 13.50 0.50 4160300200055 0.26 0.02 4160300200056 3.83 0.15 26.7 0.6 15.20 0.50 4160300200057 0.61 0.04 0.007 0.003 4160300200058 4.37 0.18 25.0 0.5 16.30 0.50 4160300200059 1.02 0.06 0.008 0.003 4160300200060 5.09 0.22 22.8 0.5 17.50 0.50 4160300200061 1.70 0.08 0.030 0.005 4160300200062 ENDDATA 20 0 4160300200063 ENDSUBENT 62 0 4160300299999 SUBENT 41603003 20141201 41664160300300001 BIB 5 17 4160300300002 REACTION (1-H-1(N,TOT),,SIG) 4160300300003 ANALYSIS Not explained. 4160300300004 COMMENT Of compiler. 4160300300005 An assumption could be done, that these data are 4160300300006 MONITOR values for Subent 002 data, but the article 4160300300007 of MONIT-REF (,O.Benary+,R,UCRL-2000,1970) is not 4160300300008 available for checking. 4160300300009 Also it's mentioned in the article, that 4160300300010 "this data (MONITOR) are known with accuracy about 4160300300011 1.%", but data (given in Table 1 as SIG-tot) have 4160300300012 accuracy 1.% - in one point, 0.7% - in one point, 4160300300013 < 0.5% in other points. 4160300300014 May be, authors just improved accuracy of data (Subent 4160300300015 003) in this experiment. 4160300300016 ERR-ANALYS (DATA-ERR) Not specified. 4160300300017 MOM-ERR - dispersion . 4160300300018 STATUS (TABLE) Table 1 of J,NP/B,99,445,1975. 4160300300019 ENDBIB 17 0 4160300300020 NOCOMMON 0 0 4160300300021 DATA 4 8 4160300300022 MOM MOM-ERR DATA DATA-ERR 4160300300023 GEV/C GEV/C MB MB 4160300300024 1.25 0.05 37.5 0.4 4160300300025 1.42 0.05 39.0 0.3 4160300300026 1.72 0.07 40.0 0.2 4160300300027 2.23 0.09 42.0 0.1 4160300300028 3.10 0.12 43.0 0.1 4160300300029 3.83 0.15 42.5 0.1 4160300300030 4.37 0.18 42.3 0.1 4160300300031 5.09 0.22 42.0 0.1 4160300300032 ENDDATA 10 0 4160300300033 ENDSUBENT 32 0 4160300399999 ENDENTRY 3 0 4160399999999