ENTRY            G4082   20200105                             G044G408200000001 
SUBENT        G4082001   20200105                             G044G408200100001 
BIB                 11         48                                 G408200100002 
TITLE      Sigma-asymmetry of the reaction g+7Li -> 4He+3H near   G408200100003 
            the threshold                                         G408200100004 
AUTHOR     (Yu.V.Vladimirov, V.V.Denyak, S.N.Dyukov, I.G.Evseev,  G408200100005 
            V.I.Kasilov, N.I.Lapin, V.P.Likhachev, S.A.Pashchuk,  G408200100006 
            E.V.Pegushin, V.M.Sanin, V.M.Khvastunov, V.B.Shostak, G408200100007 
            S.F.Shcherbak)                                        G408200100008 
INSTITUTE  (4UKRKFT)                                              G408200100009 
REFERENCE  (J,JEL,49,155,1989) English transl. of ZEP,49,133,1989 G408200100010 
           (J,ZEP,49,133,1989) in Russian                         G408200100011 
FACILITY   (LINAC,4UKRKFT) 2-GeV linear electron accelerator      G408200100012 
INC-SOURCE (BRST,POLPS,KINDT) Linearly polarized gamma rays were  G408200100013 
            produced by passing electrons with an energy          G408200100014 
            E=1200 MeV along the (110) plane (far from the axes)  G408200100015 
            of a silicon crystal 500 um thick.                    G408200100016 
           The value of the degree of linear polarization in the  G408200100017 
            coherent part of the gamma spectrum was measured with G408200100018 
            a polarimeter based on a gaseous deuterium target and G408200100019 
            a surface-barrier semiconductor detector, on the      G408200100020 
            basis of the asymmetry of the proton yield for the    G408200100021 
            coherent part of the gamma spectrum.                  G408200100022 
           (KINDT) Gamma-ray energy was reconstructed by          G408200100023 
            measuring the energy spectra of the charged products. G408200100024 
DETECTOR   (SIBAR) Two Si surface-barrier semiconductor detectors G408200100025 
            positioned on different sides of the target, at       G408200100026 
            angles (90 deg and -85 deg) corresponding to the      G408200100027 
            kinematics of the reaction of interest.               G408200100028 
           These detectors were connected in a coincidence        G408200100029 
            circuit.                                              G408200100030 
METHOD     (COINC) Detection of t and alpha in coincidence        G408200100031 
SAMPLE     Free-standing foil of the isotope 7Li (1 mg/cm2 thick) G408200100032 
            in a vacuum chamber.                                  G408200100033 
ADD-RES    The particle considered (triton or alpha) and its      G408200100034 
            angle (90 deg or 85 deg) is not clear. Following      G408200100035 
            parallel-perpendicular asymmetry  avlues were         G408200100036 
            digitized from Fig.1 of JETP Lett.49(1989)155:        G408200100037 
           -------------------------------------------------------G408200100038 
                     Eg (MeV)                Asymmetry            G408200100039 
           -------------------------------------------------------G408200100040 
              5.2768 +1.0332 -0.8856    -0.0981 +/- 0.1935        G408200100041 
              6.4576 +1.2546 -0.7380     0.3703 +/- 0.0735        G408200100042 
              9.5572 +1.4022 -1.6974     0.4555 +/- 0.0697        G408200100043 
             12.4354 +2.0664 -1.8450     0.6606 +/- 0.0697        G408200100044 
             16.9373 +1.7712 -2.2140     0.7071 +/- 0.0619        G408200100045 
             21.1439 +2.2878 -2.5092     0.8890 +/- 0.0968        G408200100046 
             26.1624 +2.5092 -2.4354     0.9742 +/- 0.1548        G408200100047 
           -------------------------------------------------------G408200100048 
HISTORY    (20191217C) UkrNDC                                     G408200100049 
           (20200105A) On. Data in 002 moved to ADD-RES of 001.   G408200100050 
ENDBIB              48          0                                 G408200100051 
NOCOMMON             0          0                                 G408200100052 
ENDSUBENT           51          0                                 G408200199999 
NOSUBENT      G4082002   20200105                             G044G408200200001 
ENDENTRY             2          0                                 G408299999999