ENTRY 22175 19910523 00002217500000001 SUBENT 22175001 19910523 00002217500100001 BIB 13 34 2217500100002 REFERENCE (J,PRL,63,2456,8911) 2217500100003 TITLE - SPIN-SPIN CROSS SECTIONS OF 27-AL AND 93-NB FOR 2217500100004 NEUTRONS FROM 20 TO 50 MEV. 2217500100005 AUTHOR (W.HEERINGA,H.O.KLAGES,CHR.WOELFL,R.W.FINLAY) 2217500100006 INSTITUTE (2GERKFK) 2217500100007 (1USAOHO) R.W.F. 2217500100008 FACILITY (CYCLO,2GERKFK) THE POLARISED N BEAM FACILITY POLKA AT 2217500100009 THE KARLSRUHE CYCLOTRON AND THE POLARISED TARGET 2217500100010 FACILITY KRYPTA. 2217500100011 INC-SOURCE (D-D ) POLARISED DEUTERONS FROM AN ATOMIC BEAM SOURCE,2217500100012 ACCELERATED BY THE CYCLOTRON TO 52 MEV ONTO A 1 CM 2217500100013 THICK LIQUID D2 TARGET. N POLARISATION TYPICALLY 50%. 2217500100014 BEAM POLARISATION WAS VERTICAL, AND BEAM DIAMETER WAS 2217500100015 REDUCED TO 20 MM USING 40 CM LONG W COLLIMATOR. 2217500100016 METHOD (TOF ) EN FROM TOF TECHNIQUES. 2217500100017 DETECTOR (SCIN ) TWO NE102A SCINTILLATORS, 0.5 AND 1.0 MM THICK,2217500100018 PLACED RESPECTIVELY IN FRONT OF AND BEHIND THE TARGET,2217500100019 WERE USED AS NEUTRON FLUX MONITORS BY DETECTING RECOIL2217500100020 PROTONS GENERATED IN POLYETHYLENE CONVERTERS 2217500100021 POSITIONED IMMEDIATELY IN FRONT OF THE SCINTILLATORS. 2217500100022 A 0.5 MM AL ABSORBER WAS USED TO STOP UNWANTED LOW 2217500100023 ENERGY PROTONS. 2217500100024 SAMPLE .TARGETS WERE POLARISED IN THE KRYPTA CRYOSTAT CONTAIN-2217500100025 ING A 3-HE/4-HE DILUTION REFRIGERATOR AND A 9 TESLA 2217500100026 SPLIT COIL MAGNET. TYPICAL TARGET TEMPERATURES WERE 2217500100027 FROM 10 - 17 MILLI-KELVIN. 2217500100028 CORRECTION .MEASUREMENTS WERE MADE WITH A WARM (UNPOLARIZED) 93-NB2217500100029 TARGET TO DETECT INSTRUMENTAL ASYMMETRIES. 2217500100030 ERR-ANALYS .THE N POLARISATION WAS SWITCHED EVERY 4 SECS DURING 2217500100031 THE EXPERIMENT TO MINIMIZE SYSTEMATIC ERRORS. 2217500100032 (DATA-ERR) NO DETAILS GIVEN. 2217500100033 STATUS .DATA TAKEN FROM TABLE 1 OF MAIN REFERENCE. 2217500100034 HISTORY (910214C) S.W. 2217500100035 (910523E) 2217500100036 ENDBIB 34 0 2217500100037 NOCOMMON 0 0 2217500100038 ENDSUBENT 37 0 2217500199999 SUBENT 22175002 19910523 00002217500200001 BIB 4 6 2217500200002 REACTION (13-AL-27(N,TOT),,SIG,,SS) SPIN-SPIN CROSS SECTION 2217500200003 SAMPLE .SQUARE CROSS SECTION METAL TARGET, 35 X 35 X 40 MM. 2217500200004 THE EFFECTIVE TARGET POLARIZATION WAS 49%. 2217500200005 STATUS .DATA TAKEN FROM TABLE 1 OF MAIN REFERENCE. 2217500200006 HISTORY (910214C) S.W. 2217500200007 (910523E) 2217500200008 ENDBIB 6 0 2217500200009 NOCOMMON 0 0 2217500200010 DATA 4 8 2217500200011 EN EN-ERR DATA DATA-ERR 2217500200012 MEV MEV MB MB 2217500200013 22.0 1.5 -7.0 7.3 2217500200014 25.0 1.5 -6.6 5.2 2217500200015 27.5 1.0 -7.0 5.8 2217500200016 30.0 1.5 -0.9 5.1 2217500200017 33.0 1.5 4.8 5.7 2217500200018 36.0 1.5 0.6 6.5 2217500200019 40.0 2.0 -4.1 7.0 2217500200020 50.0 2.0 16.8 7.8 2217500200021 ENDDATA 10 0 2217500200022 ENDSUBENT 21 0 2217500299999 SUBENT 22175003 19910523 00002217500300001 BIB 4 7 2217500300002 REACTION (41-NB-93(N,TOT),,SIG,,SS) SPIN-SPIN CROSS SECTION 2217500300003 SAMPLE .CIRCULAR CROSS SECTION METAL TARGET, DIAM 30 MM AND 2217500300004 THICKNESS 40 MM. THE EFFECTIVE TARGET POLARIZATION 2217500300005 WAS 53%. 2217500300006 STATUS .DATA TAKEN FROM TABLE 1 OF MAIN REFERENCE. 2217500300007 HISTORY (910214C) S.W. 2217500300008 (910523E) 2217500300009 ENDBIB 7 0 2217500300010 NOCOMMON 0 0 2217500300011 DATA 4 9 2217500300012 EN EN-ERR DATA DATA-ERR 2217500300013 MEV MEV MB MB 2217500300014 19.0 1.0 24.3 11.2 2217500300015 22.0 1.5 13.1 4.8 2217500300016 25.0 1.5 2.9 3.3 2217500300017 27.5 1.0 -1.2 3.8 2217500300018 30.0 1.5 -1.8 3.4 2217500300019 33.0 1.5 -9.4 3.8 2217500300020 36.0 1.5 -20.5 4.3 2217500300021 40.0 2.0 -19.5 4.7 2217500300022 50.0 2.0 -22.9 5.2 2217500300023 ENDDATA 11 0 2217500300024 ENDSUBENT 23 0 2217500399999 ENDENTRY 3 0 2217599999999