ENTRY M0358 20200214 M106M035800000001 SUBENT M0358001 20200214 M106M035800100001 BIB 14 34 M035800100002 TITLE Energy spectrum and polarization of photoneutrons M035800100003 from Li-7. M035800100004 AUTHOR (A.De Marco,R.Garfagnini,G.Piragino) M035800100005 INSTITUTE (2ITYTUR) M035800100006 REFERENCE (J,AANL,42,797,1967) M035800100007 FACILITY (SYNCH,2ITYTUR) 100 MeV synchrotron of the Turin M035800100008 University. M035800100009 INC-SOURCE (BRST) M035800100010 SAMPLE (3-LI-7,ENR=0.925) The target of natural lithium was M035800100011 a cylinder of 5.4 cm diameter and 11.9 cm long. M035800100012 It was sealed in a thin (1 mm thick) plexiglass M035800100013 container with the front walls in thin mylar. M035800100014 The target axis was parallel to the gamma ray beam M035800100015 direction, and its diameter was greater than that of M035800100016 the beam. M035800100017 METHOD (REC) The energy distribution of the photoneutrons M035800100018 was deduces from the recoil spectrum of a-particles, M035800100019 corrected for geometric losses and the energy M035800100020 dependence of the (n,4He) elastic scattering cross M035800100021 section. M035800100022 PART-DET (N) M035800100023 DETECTOR (TRD) The diffusion cloud chamber filled with helium M035800100024 at 2.4 absolute atmosphere pressure. M035800100025 ERR-ANALYS (ERR-S) Statistical errors of measurement. M035800100026 ADD-RES (THEO) The theoretical polarization values were found M035800100027 within the single particle shell model in the j-j M035800100028 and l-s coupling schemes. M035800100029 REL-REF (M,,A.De Marco+,J,AAST,99,445,1965) The details of M035800100030 the experimental method. M035800100031 HISTORY (19900104C) Data were compiled in the SCJAD of M035800100032 Saratov State University. M035800100033 (20200214A) Corrected by V.Varlamov: METHOD, M035800100034 PART-DET, ERR-ANALYS, FACILITY, REL-REF, STATUS, M035800100035 lowercase. M035800100036 ENDBIB 34 0 M035800100037 COMMON 3 3 M035800100038 EN-MAX ANG ANG-ERR M035800100039 MEV ADEG ADEG M035800100040 85. 135. 7. M035800100041 ENDCOMMON 3 0 M035800100042 ENDSUBENT 41 0 M035800199999 SUBENT M0358002 20200214 M106M035800200001 BIB 6 11 M035800200002 REACTION (3-LI-7(G,X)0-NN-1,,DA/DE,,BRA/REL) M035800200003 ANALYSIS The energy distribution of the photoneutrons was M035800200004 deduced from the recoil spectrum of alpha-particles. M035800200005 CORRECTION The data were corrected for: M035800200006 a - the geometric losses; M035800200007 b - the energy dependence of the (n,a) elastic M035800200008 scattering cross section. M035800200009 REL-REF (A,M0306000,A.Wataghin+,J,NC/B,40,(2),441,1965) M035800200010 STATUS (CURVE) Data from Fig. 3. M035800200011 HISTORY (20200214A) Corrected by V.Varlamov: STATUS, COMMON, M035800200012 ERR-S, DATA substituted, zero data ponts deleted. M035800200013 ENDBIB 11 0 M035800200014 NOCOMMON 0 0 M035800200015 DATA 4 28 M035800200016 E-MIN E-MAX DATA ERR-S M035800200017 MEV MEV ARB-UNITS ARB-UNITS M035800200018 0.8 1.2 258.7 22.5 M035800200019 1.2 1.6 322.8 24.6 M035800200020 1.6 2.0 278.4 26.4 M035800200021 2.0 2.4 267.7 30.5 M035800200022 2.4 2.8 197.6 24.0 M035800200023 2.8 3.2 150.9 21.6 M035800200024 3.2 3.6 123.4 19.8 M035800200025 3.6 4.0 96.4 16.5 M035800200026 4.0 4.4 103.6 19.5 M035800200027 4.4 4.8 59.3 14.1 M035800200028 4.8 5.2 52.1 12.3 M035800200029 5.2 5.6 42.5 12.3 M035800200030 5.6 6.0 24.6 10.2 M035800200031 6.0 6.4 29.9 9.9 M035800200032 6.4 6.8 19.8 9.0 M035800200033 6.8 7.2 25.2 9.9 M035800200034 7.2 7.6 37.7 13.5 M035800200035 7.6 8.0 21.0 10.2 M035800200036 8.0 8.4 27.5 12.0 M035800200037 8.4 8.8 4.2 3.6 M035800200038 8.8 9.2 18.0 10.2 M035800200039 9.2 9.6 16.2 10.2 M035800200040 9.6 10.0 15.0 6.9 M035800200041 10.0 10.4 7.2 8.4 M035800200042 10.8 11.2 7.2 7.2 M035800200043 11.2 11.6 9.6 7.2 M035800200044 12.0 12.4 7.2 7.2 M035800200045 14.0 14.4 10.8 10.8 M035800200046 ENDDATA 30 0 M035800200047 ENDSUBENT 46 0 M035800299999 SUBENT M0358003 20200214 M106M035800300001 BIB 6 14 M035800300002 REACTION (3-LI-7(G,X)0-NN-1,PAR,POL/DA,,BRA) M035800300003 ANALYSIS The data were obtained using the maximum likelihood M035800300004 method. M035800300005 CORRECTION The polarization was corrected for the asymmetry of M035800300006 apparatus. M035800300007 COMMENT To eliminate a possible asymmetry of apparatus the M035800300008 polarization of neutrons coming from a Rad-Be source M035800300009 was measured. The presented data are equal to the M035800300010 difference between the value of the polarization due M035800300011 to photoneutrons coming from Li-7 and the value M035800300012 obtained from the source. M035800300013 STATUS (CURVE) Data from Fig. 2. M035800300014 HISTORY (20200214A) Corrected by V.Varlamov: STATUS, ERR-S, M035800300015 DATA substituted. M035800300016 ENDBIB 14 0 M035800300017 NOCOMMON 0 0 M035800300018 DATA 4 4 M035800300019 E-MIN E-MAX DATA ERR-S M035800300020 MEV MEV NO-DIM NO-DIM M035800300021 1.0 2.0 0.35 0.17 M035800300022 2.0 3.0 0.19 0.29 M035800300023 3.0 4.0 -0.16 0.29 M035800300024 4.0 16.0 0.00 0.16 M035800300025 ENDDATA 6 0 M035800300026 ENDSUBENT 25 0 M035800399999 ENDENTRY 3 0 M035899999999