ENTRY L0038 20120225 L019L003800000001 SUBENT L0038001 20120225 L019L003800100001 BIB 12 25 L003800100002 TITLE C12(g,n)C11 giant resonance with gamma rays L003800100003 AUTHOR (W.A.Lochstet, W.E.Stephens) L003800100004 INSTITUTE (1USAPEN) L003800100005 REFERENCE (J,PR,141,1002,196601) L003800100006 FACILITY (VDGT,1USAPEN) For proton energies above 2.5 MeV L003800100007 (VDG,1USACOL) For lower energies L003800100008 INC-SOURCE (MPH=(1-H-3(P,G)2-HE-4)) L003800100009 Resolution (FWHM) of the gamma-ray energy distributionL003800100010 calculated from the Doppler angle and the target L003800100011 thickness and varies from about 100 keV at 22 MeV to L003800100012 about 250 keV at 26 MeV. L003800100013 SAMPLE The disk samples were made of A.G.O.T. reactor grade L003800100014 graphite of 99.93% purity. L003800100015 METHOD (ACTIV) Direct measurement of positron activity L003800100016 DETECTOR (NAICR) Two 5 inch by 2 inch NaI crystals measured L003800100017 annihilation radiation from positrons emitted from L003800100018 11C. L003800100019 PART-DET (AR) Positron annihilation radiation L003800100020 COMMENT The peak cross section is 7.8 mb at both 22.15 and L003800100021 23.0 MeV, and additional structure is observed at L003800100022 25.6 MeV. L003800100023 HISTORY (19891206C) L003800100024 (20090323A) Deleted by V.Varlamov because duplication L003800100025 with M0241. L003800100026 (20120225A) On. INC-SOURCE corrected L003800100027 ENDBIB 25 0 L003800100028 NOCOMMON 0 0 L003800100029 ENDSUBENT 28 0 L003800199999 NOSUBENT L0038002 20090323 M047L003800200001 NOSUBENT L0038003 20090323 M047L003800300001 ENDENTRY 3 0 L003899999999