ENTRY M0536 20090323 M047M053600000001 SUBENT M0536001 20090323 M047M053600100001 BIB 16 83 M053600100002 REFERENCE (J,NP/A,549,387,1992) M053600100003 TITLE Photodisintegration of the deuteron by linearly M053600100004 polarised photons. M053600100005 AUTHOR (K.-H.KRAUSE,J.SOBOLEWSKI,J.AHRENS,J.M.HENNEBERG, M053600100006 B.ZIEGLER) M053600100007 INSTITUTE (2GERMPM) M053600100008 FACILITY (MICRT) The Mainz race-track microtron. M053600100009 INC-SOURCE (TAGD) The photon beam was produced by tagging M053600100010 off-axis bremsstrahlung photons using the tagging M053600100011 system of Max Planck Institut fuer Chemie in Mainz M053600100012 installed at the electron beam. The initial electron M053600100013 beam energy of 184 MeV can simultaneously produce M053600100014 tagged photons of energy 14 to 144 MeV. M053600100015 INC-SPECT The source of photons was a quasi-monochromatic M053600100016 linearly polarised photon beam. Tagged photons from M053600100017 53 to 71 MeV and 84 to 104 MeV were simultaneously M053600100018 provided using a tagging detector system based on M053600100019 set of silicon surface barrier detectors (Si(Sb), M053600100020 Micron Semiconduvtor MSX5-450-C) detectors grouped M053600100021 into two separate arrays, each array contains 16 M053600100022 detectors mounted in two adjacent parallel rows. The M053600100023 detector width corresponds to an energy resolution M053600100024 of about 1 MeV. The detectors have sensitive area 5 M053600100025 x 5 mm**2 and depletion layer 450 micro-m. The M053600100026 tagging efficiency was measured with high precision M053600100027 using an NaI detector in coincidence with the Si(Sb) M053600100028 tagging detectors. The degree of linear M053600100029 polarisation, considerably enhanced by means of M053600100030 kinematic selection, was measured using photons M053600100031 emitted from the resonance excitation of the 15.11 M053600100032 MeV level (1+) C-12. The tagging efficiency values M053600100033 TE for different Eg are the following: M053600100034 Eg (MeV) 54 60 68 88 M053600100035 TE (%) 24.35(27) 25.54(26) 27.66(28) 33.78(32) M053600100036 In the photon energy range from 50 to 100 MeV the M053600100037 corrresponding degree of linear polarization M053600100038 decreases from 47 to 35 %. M053600100039 METHOD (EXTB) Photoprotons were detected using a detector M053600100040 system based on an array of Si(Sb) detectors. M053600100041 DETECTOR (SOLST) 4 silicon surface barrier detectors (Si(Sb)), M053600100042 Micron Semiconductor MSX3-450-C, with sensitive area M053600100043 1 x 1 cm**2 and depletion layer 450 micro-m were M053600100044 mounted on an arrangement of 4 rings, 320 mm M053600100045 diameter. The detectorc are arranged at seven M053600100046 reaction angles (40 - 160 degrees) both parallel and M053600100047 perpendicular to the polarisation plane. With regard M053600100048 to the target center each of the detectors covers a M053600100049 solid angle of about 28 msr corresponding to M053600100050 delta (theta-p) = +- 5 degree. An energy loss signal M053600100051 is provided because the range of the protons M053600100052 expected is bigger than the depletion depth of the M053600100053 detectors. M053600100054 PART-DET (P) M053600100055 SAMPLE Along the beam direction the cryotasrget consists of M053600100056 three successive cells separated by 2 micron-m Mylar M053600100057 foils. The two outer volumes are separated from M053600100058 vacuum by 100 micro-m Kapton windows. Only the inner M053600100059 volume (84 mm diameter x 10 mm), the actual target M053600100060 cell, is filled with boiling liquid deuterium. The M053600100061 outer volumes are connected with the target cell by M053600100062 a pressure-compensation capillary. The number of M053600100063 target nuclei per cm**2 was 8.7 x 10**22 (with M053600100064 systematic error of +- 2.5 %). M053600100065 COMMENT The photodisintegration of the deuteron has been M053600100066 studied using a quasi-monochromatic linearly M053600100067 polarized photon beam at energies of 54, 60, 68, and M053600100068 88 MeV. The photon beam was obtained by tagging M053600100069 off-axis bremsstrahlung photons. The angular M053600100070 distribution of the azimuthal cross section M053600100071 asymmetry and the polarization-independent part of M053600100072 the differential cross section were measured M053600100073 simultaneously at seven reaction angles between 40 M053600100074 and 160 degree. M053600100075 ANALYSIS (DIFFR) Time difference spectra analysis. M053600100076 CORRECTION Were made for dead time, background, accidental M053600100077 events. M053600100078 STATUS (TABLE) Data were prepared in the MSU INP CDFE by M053600100079 V.V.Varlamov using the IAEA NDS G2001 TRANS. M053600100080 HISTORY (19930819C) N.O. M053600100081 (19931129E) M053600100082 (19980817A) M053600100083 (20081111A) Corrected by V.Varlamov: PART-DET added, M053600100084 REACTION (004) and UNITS (003) corrected, dates M053600100085 ENDBIB 83 0 M053600100086 NOCOMMON 0 0 M053600100087 ENDSUBENT 86 0 M053600199999 SUBENT M0536002 20090323 M047M053600200001 BIB 3 26 M053600200002 REACTION (1-H-2(G,N)1-H-1,,DA,,MSC) M053600200003 Polarization-independent part of the reaction M053600200004 differential cross section. M053600200005 COMMENT Polarization-independent part of the reaction M053600200006 differential cross section M053600200007 dsig-0/domeg(theta-p-c.m.) = M053600200008 1/2 (dsig-prl/domeg + dsig-prp/domeg), M053600200009 where dsig-prl/domeg and dsig-prp/domeg are M053600200010 correspondingly the reaction differential cross M053600200011 sections measured parallel and perpendicular to the M053600200012 polarization plane. M053600200013 ERR-ANALYS (ERR-S) Statistical errors stemmed from the M053600200014 statistical error on the number of protons and on M053600200015 number of tagged photons are given. M053600200016 The total systematic error was estimated to be equal M053600200017 to 3 %. M053600200018 (ERR-1) The systematic uncertainties in number of M053600200019 target nuclei. M053600200020 (ERR-2) The systematic uncertainties in linear M053600200021 polarisation. M053600200022 (ERR-3) The systematic uncertainties in solid angle M053600200023 of proton detector. M053600200024 (ERR-4) The systematic uncertainties in correction M053600200025 factor for dead time. M053600200026 (ERR-5) The systematic uncertainties in azimutal M053600200027 asymmetry of apparatus. M053600200028 ENDBIB 26 0 M053600200029 COMMON 5 3 M053600200030 ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 M053600200031 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT M053600200032 2.5 2. 1. .3 .007 M053600200033 ENDCOMMON 3 0 M053600200034 DATA 5 27 M053600200035 EN EN-RSL-FW ANG-CM DATA-CM ERR-S M053600200036 MEV PER-CENT ADEG MU-B/SR MU-B/SR M053600200037 54. 3. 46.6 14.2 0.5 M053600200038 54. 3. 67.9 15.6 0.5 M053600200039 54. 3. 88.2 14.5 0.5 M053600200040 54. 3. 108.3 13.0 0.6 M053600200041 54. 3. 127.1 8.4 0.5 M053600200042 54. 3. 145.1 6.4 0.5 M053600200043 54. 3. 162.6 4.6 0.4 M053600200044 60. 5. 46.9 10.9 0.5 M053600200045 60. 5. 68.2 11.7 0.4 M053600200046 60. 5. 88.6 12.1 0.4 M053600200047 60. 5. 108.7 9.7 0.4 M053600200048 60. 5. 127.4 6.9 0.4 M053600200049 60. 5. 145.5 6.0 0.4 M053600200050 60. 5. 162.7 4.5 0.4 M053600200051 68. 5. 47.6 9.6 0.6 M053600200052 68. 5. 69.1 11.6 0.4 M053600200053 68. 5. 89.4 10.2 0.4 M053600200054 68. 5. 109.5 8.6 0.4 M053600200055 68. 5. 128.2 5.9 0.3 M053600200056 68. 5. 145.9 4.5 0.3 M053600200057 68. 5. 163.0 4.7 0.3 M053600200058 88. 5. 71.0 8.7 0.5 M053600200059 88. 5. 91.3 6.8 0.3 M053600200060 88. 5. 111.3 6.6 0.3 M053600200061 88. 5. 129.9 4.5 0.3 M053600200062 88. 5. 147.4 4.1 0.2 M053600200063 88. 5. 163.9 4.2 0.2 M053600200064 ENDDATA 29 0 M053600200065 ENDSUBENT 64 0 M053600299999 SUBENT M0536003 20090323 M047M053600300001 BIB 3 23 M053600300002 REACTION (1-H-2(G,N)1-H-1,,DA,,MSC) M053600300003 Polarization-dependent part of the reaction M053600300004 differential cross section. M053600300005 COMMENT Polarization-dependent part of the reaction M053600300006 differential cross section M053600300007 dsig-1/domeg(theta-p-c.m.) = M053600300008 1/2 (dsig-prl/domeg - dsig-prp/domeg), M053600300009 where dsig-prl/domeg and dsig-prp/domeg are M053600300010 correspondingly the reaction differential cross M053600300011 sections measured parallel and perpendicular to the M053600300012 polarization plane. M053600300013 ERR-ANALYS (ERR-S) Statistical errors stemmed from the M053600300014 statistical error on the number of protons and on M053600300015 number of tagged photons are given. The systematic M053600300016 uncertainties were estimated as caused by M053600300017 uncertainties in: M053600300018 percent in number of target nuclei - 2.5 %; M053600300019 degree of linear polarisation - 2 %; M053600300020 solid angle of proton detector - 1 %; M053600300021 correction factor for dead time - 0.3 %; M053600300022 azimutal asymmetry of apparatus - 0.007 %. M053600300023 The total systematic error varies significantly with M053600300024 theta-p and Eg between 0.06 and 0.36 micro-b/sr. M053600300025 ENDBIB 23 0 M053600300026 NOCOMMON 0 0 M053600300027 DATA 6 27 M053600300028 EN EN-RSL-FW ANG-CM DATA-CM ERR-S POL-BM M053600300029 MEV PER-CENT ADEG MU-B/SR MU-B/SR NO-DIM M053600300030 54. 3. 46.6 7.1 1.1 47.3 M053600300031 54. 3. 67.9 9.0 1.0 47.3 M053600300032 54. 3. 88.2 9.2 1.1 47.3 M053600300033 54. 3. 108.3 6.0 1.2 47.3 M053600300034 54. 3. 127.1 3.5 1.0 47.3 M053600300035 54. 3. 145.1 1.3 1.0 47.3 M053600300036 54. 3. 162.6 0.0 0.9 47.3 M053600300037 60. 5. 46.9 4.5 1.1 46.6 M053600300038 60. 5. 68.2 5.1 0.9 46.6 M053600300039 60. 5. 88.6 5.4 0.9 46.6 M053600300040 60. 5. 108.7 4.3 0.9 46.6 M053600300041 60. 5. 127.4 1.4 0.8 46.6 M053600300042 60. 5. 145.5 1.2 0.8 46.6 M053600300043 60. 5. 162.7 0.9 0.9 46.6 M053600300044 68. 5. 47.6 3.4 1.4 45.2 M053600300045 68. 5. 69.1 5.2 0.9 45.2 M053600300046 68. 5. 89.4 3.2 0.9 45.2 M053600300047 68. 5. 109.5 1.6 0.8 45.2 M053600300048 68. 5. 128.2 1.0 0.7 45.2 M053600300049 68. 5. 145.9 0.6 0.6 45.2 M053600300050 68. 5. 163.0 0.5 0.8 45.2 M053600300051 88. 5. 71.0 1.4 1.2 39.3 M053600300052 88. 5. 91.3 1.9 0.7 39.3 M053600300053 88. 5. 111.3 1.4 0.8 39.3 M053600300054 88. 5. 129.9 0.3 0.6 39.3 M053600300055 88. 5. 147.4 0.1 0.5 39.3 M053600300056 88. 5. 163.9 0.0 0.7 39.3 M053600300057 ENDDATA 29 0 M053600300058 ENDSUBENT 57 0 M053600399999 SUBENT M0536004 20090323 M047M053600400001 BIB 3 30 M053600400002 REACTION (1-H-2(G,N)1-H-1,,POL/DA,,ASY/PP/MSC) M053600400003 Azimuthal reaction cross section asymmetry. M053600400004 COMMENT The azimuthal reaction cross section asymmetry (is M053600400005 equivalent to 'analyzing power' in EXFOR DICTIONARY M053600400006 36 (see LEXFOR under polarization) with that M053600400007 exception that 'analyzing power' concerns the M053600400008 left-right asymmetry in the same reaction plane but M053600400009 'azimuthal asymmetry' concerns the in-out M053600400010 polarization plane asymmetry) M053600400011 SIGMA(theta-p-c.m.) = M053600400012 1 (dsig-prl/domeg - dsig-prp/domeg) M053600400013 = - --------------------------------- M053600400014 P (dsig-prl/domeg - dsig-prp/domeg), M053600400015 where P is the degree of linear polarization of the M053600400016 photon beam and dsig-prl/domeg and dsig-prp/domeg M053600400017 are correspondingly the reaction differential cross M053600400018 sections measured parallel and perpendicular to the M053600400019 polarization plane. M053600400020 ERR-ANALYS (ERR-S) Statistical errors stemmed from the M053600400021 statistical error on the number of protons and on M053600400022 number of tagged photons are given. The systematic M053600400023 uncertainties were estimated as caused by M053600400024 uncertainties in: M053600400025 percent in number of target nuclei - 2.5 %; M053600400026 degree of linear polarisation - 2 %; M053600400027 solid angle of proton detector - 1 %; M053600400028 correction factor for dead time - 0.3 %; M053600400029 azimutal asymmetry of apparatus - 0.007 %. M053600400030 The total systematic error was estimated to be equal M053600400031 to about 0.02. M053600400032 ENDBIB 30 0 M053600400033 NOCOMMON 0 0 M053600400034 DATA 5 27 M053600400035 EN EN-RSL-FW ANG-CM DATA-CM ERR-S M053600400036 MEV PER-CENT ADEG NO-DIM NO-DIM M053600400037 54. 3. 46.6 -0.50 0.08 M053600400038 54. 3. 67.9 -0.57 0.06 M053600400039 54. 3. 88.2 -0.63 0.07 M053600400040 54. 3. 108.3 -0.46 0.09 M053600400041 54. 3. 127.1 -0.42 0.12 M053600400042 54. 3. 145.1 -0.20 0.16 M053600400043 54. 3. 162.6 -0.00 0.20 M053600400044 60. 5. 46.9 -0.41 0.10 M053600400045 60. 5. 68.2 -0.44 0.07 M053600400046 60. 5. 88.6 -0.45 0.07 M053600400047 60. 5. 108.7 -0.44 0.09 M053600400048 60. 5. 127.4 -0.20 0.12 M053600400049 60. 5. 145.5 -0.21 0.14 M053600400050 60. 5. 162.7 -0.19 0.20 M053600400051 68. 5. 47.6 -0.35 0.14 M053600400052 68. 5. 69.1 -0.45 0.08 M053600400053 68. 5. 89.4 -0.31 0.08 M053600400054 68. 5. 109.5 -0.18 0.10 M053600400055 68. 5. 128.2 -0.17 0.12 M053600400056 68. 5. 145.9 -0.14 0.13 M053600400057 68. 5. 163.0 -0.10 0.16 M053600400058 88. 5. 71.0 -0.16 0.14 M053600400059 88. 5. 91.3 -0.27 0.11 M053600400060 88. 5. 111.3 -0.21 0.13 M053600400061 88. 5. 129.9 -0.07 0.14 M053600400062 88. 5. 147.4 -0.02 0.13 M053600400063 88. 5. 163.9 -0.00 0.17 M053600400064 ENDDATA 29 0 M053600400065 ENDSUBENT 64 0 M053600499999 ENDENTRY 4 0 M053699999999