ENTRY C0502 19990908 C076C050200000001 SUBENT C0502001 19990908 C076C050200100001 BIB 15 44 C050200100002 INSTITUTE (1USAANL) + Valaparaiso University, Indiana C050200100003 REFERENCE (J,PR/C,28,2222,198312) C050200100004 (J,PRL,50,412,198302) C050200100005 AUTHOR (B.W.FILIPPONE,A.J.ELWYN,C.N.DAVIDS,D.D.KOETKE) C050200100006 TITLE Proton capture cross section of 7Be and the flux of C050200100007 high energy solar neutrinos C050200100008 FACILITY (DYNAM,1USAANL) Argonne National laboratory 4.5 MV C050200100009 dynamitron. C050200100010 SAMPLE 7Be produced via the 7Li(p,n)7Be reaction. C050200100011 Final target consisted of 80 mCi of 7Be (0.23 microg) C050200100012 and 7 microg of solids C050200100013 METHOD Sawtooth-wave voltage applied to two orthogonal sets C050200100014 of parallel plates (at incommensurate frequencies) C050200100015 prior to beam collimation in order to ensure a stable,C050200100016 uniform beam spot. C050200100017 DETECTOR (SOLST) Silicon surface-barrier detector with 300 mm2 C050200100018 active area and 23 microm depletion depth. C050200100019 MONITOR (3-LI-7(D,P)3-LI-8,,SIG) 7Be areal density. C050200100020 Energy scale of dymanitron determined from C050200100021 19F(p,alpha gamma) thick target yields at 224.4, C050200100022 340.46, and 872.11 keV resonances. C050200100023 7Be areal density measured C050200100024 1) relative to yield of 7Li(d,p)8Li reaction at C050200100025 0.77-MeV resonance. C050200100026 2) using yield of 478-keV gamas in Ge(Li) detector C050200100027 whose efficiency found using calibrated gamma C050200100028 sources of 54Mn, 133Ba, and 137Cs. C050200100029 Solid angle of detector determined by comparing alpha C050200100030 particle yield with 7Li(d,p)8Li->8Be*->2alpha in the C050200100031 near geometry (2 mm target-collimator distance) to C050200100032 that in a far geometry (target-collimator distance C050200100033 22.2mm). C050200100034 DECAY-DATA (5-B-8,0.769SEC) C050200100035 DECAY-MON (3-LI-8,0.842SEC) C050200100036 CORRECTION Total number of 7Be nuclei corrected for decay. C050200100037 Data corrected for: C050200100038 . background, C050200100039 . alphas below cutoff energy of 0.95 MeV, C050200100040 . energy loss of beam in target, C050200100041 ERR-ANALYS (ERR-S) Uncertainty due to counting statistics. C050200100042 STATUS No reply from B. Filippone to author proof. C050200100043 HISTORY (19970925C) YH+VM C050200100044 (19990908A) Miscellaneous BIB updates. C050200100045 (20051005C) DR Unit in EN changed from keV to MeV C050200100046 ENDBIB 44 0 C050200100047 NOCOMMON 0 0 C050200100048 ENDSUBENT 47 0 C050200199999 SUBENT C0502002 19990908 C076C050200200001 BIB 3 5 C050200200002 REACTION 1(4-BE-7(P,G)5-B-8,,SIG) C050200200003 2(4-BE-7(P,G)5-B-8,,SIG,,SFC) C050200200004 STATUS (NACRE) Data taken from NACRE compilation. C050200200005 Checked against data received from B. Filippone, 1999.C050200200006 HISTORY (19980416A) Units corrected C050200200007 ENDBIB 5 0 C050200200008 NOCOMMON 0 0 C050200200009 DATA 5 25 C050200200010 EN-CM DATA 1ERR-S 1DATA 2ERR-S 2 C050200200011 MEV NB NB B*EV B*EV C050200200012 0.117 3.1 0.43 18.8 2.6 C050200200013 0.186 17. 1.9 17.3 1.9 C050200200014 0.257 47. 5.1 18.4 2. C050200200015 0.302 64. 5.7 16.8 1.5 C050200200016 0.346 100. 8.4 19.9 1.6 C050200200017 0.390 140. 9.3 21.5 1.4 C050200200018 0.435 160. 12. 19.5 1.4 C050200200019 0.480 170. 9.8 17.7 1. C050200200020 0.524 230. 12. 20.5 1.1 C050200200021 0.568 320. 18. 25.4 1.4 C050200200022 0.590 450. 23. 33.3 1.7 C050200200023 0.603 600. 32. 42.9 2.3 C050200200024 0.612 840. 40. 59.6 2.8 C050200200025 0.625 1300. 64. 86.9 4.4 C050200200026 0.632 1500. 41. 101.3 2.8 C050200200027 0.638 1400. 61. 91.2 4.1 C050200200028 0.648 1000. 50. 65.9 3.3 C050200200029 0.656 820. 39. 52.6 2.5 C050200200030 0.678 490. 26. 30.1 1.6 C050200200031 0.701 470. 24. 27.8 1.1 C050200200032 0.745 410. 20. 22.7 1.1 C050200200033 0.789 480. 31. 24.7 1.6 C050200200034 0.877 460. 30. 21.5 1.4 C050200200035 1.053 520. 28. 20.3 1.1 C050200200036 1.230 680. 40. 24. 1.4 C050200200037 ENDDATA 27 0 C050200200038 ENDSUBENT 37 0 C050200299999 ENDENTRY 2 0 C050299999999