ENTRY 23037 20200117 22852303700000001 SUBENT 23037001 20200117 22852303700100001 BIB 12 38 2303700100002 TITLE 7Be neutron production cross section on 12C targets 2303700100003 AUTHOR (M.G.Giammarchi, M.Laubenstein, J.P.Meulders, 2303700100004 L.Miramonti, A.Formicola) 2303700100005 INSTITUTE (2ITYMIL) Dipartimento di Fisica dell Universita 2303700100006 degli Studi and INFN Milano, Milano, Italy. 2303700100007 M.G.Giammarchi, L.Miramonti. 2303700100008 (2ITYLGS) Laboratori Nazionali del Gran Sasso, Italy. 2303700100009 M.Laubenstein, A.Formicola. Experimental site 2303700100010 (2BLGLVN) Institut de Physique Nucleaire, Belgium . 2303700100011 J.P.Meulders. Experimental site 2303700100012 REFERENCE (J,RM,43,1390,2008) 2303700100013 #doi:10.1016/j.radmeas.2008.04.092 2303700100014 Main reference, data are given 2303700100015 REL-REF (I,,M.Laubenstein+,J,ARI,61,167,2004) 2303700100016 M.Laubenstein, M.Hult, J.Gasparro, D.Arnold, 2303700100017 S.Neumaier, G.Heusser,M.Kohler, P.Povinec, 2303700100018 J.-L.Reyss,M.Schwaiger,P.Theodorsson. 2303700100019 Underground measurements of radioactivity. 2303700100020 FACILITY (CYCLO,2BLGLVN) Cyclotron de L'Universite Catholique 2303700100021 de Louvain 2303700100022 INC-SOURCE (P-LI7) 6 mm long metallic Li target irradiated by 2303700100023 32, 38, 45, 55, 65 MeV protons with 10 microamperes 2303700100024 current 2303700100025 SAMPLE Three thin copper disks 3 mm thick and 25.4 mm 2303700100026 diameter as monitor samples. Irradiated and blank 2303700100027 samples were shipped to Gran Sasso underground 2303700100028 laboratory LNGS, 2ITYLGS, for measurements. 2303700100029 METHOD (STTA) Simultaneous carbon - copper irradiations 2303700100030 DETECTOR (HPGE) Ge-Mi coaxial p-type, active volume 414 cm3, 2303700100031 active mass 2.20 kg, relative efficiency 85.8%, 2303700100032 FWHM = 1.9 keV at 1.33 MeV gamma ray energy 2303700100033 CORRECTION Was made for C-12(N,2N)C-11 reaction 2303700100034 HISTORY (20081114C) SM 2303700100035 (20110206U) SD: DOI identifier was corrected. Ref. on 2303700100036 Appl.Rad.&Isot. 61,(2-3),167,2004 moved to REL-REF 2303700100037 (20191101A) SD: Subents 002-007 deleted ( Not data 2303700100038 measured in this experim.work (L.Miramonti, 2019-09-23)2303700100039 (20200117A) SD: DECAY-DATA corrected in Subent 008. 2303700100040 ENDBIB 38 0 2303700100041 NOCOMMON 0 0 2303700100042 ENDSUBENT 41 0 2303700199999 NOSUBENT 23037002 20191101 22832303700200001 NOSUBENT 23037003 20191101 22832303700300001 NOSUBENT 23037004 20191101 22832303700400001 NOSUBENT 23037005 20191101 22832303700500001 NOSUBENT 23037006 20191101 22832303700600001 NOSUBENT 23037007 20191101 22832303700700001 SUBENT 23037008 20200117 22852303700800001 BIB 11 31 2303700800002 REACTION (6-C-12(N,X)4-BE-7,,SIG) 2303700800003 DECAY-DATA (4-BE-7,,DG,477.621,0.1044) 2303700800004 REL-REF (R,,H.Schuhmacher+,J,NIM/A,421,284,1999) Neutron 2303700800005 spectrum analysis 2303700800006 METHOD (ACTIV) 2303700800007 MONITOR ((MONIT1)29-CU-0(N,X)27-CO-56,,SIG) 2303700800008 ((MONIT2)29-CU-0(N,X)27-CO-57,,SIG) 2303700800009 ((MONIT3)29-CU-0(N,X)27-CO-58,,SIG) 2303700800010 DECAY-MON (27-CO-56,,DG,846.771,,DG,1238.282) 2303700800011 (27-CO-57,,DG,122.0614,,DG,136.4743) 2303700800012 (27-CO-58,,DG,810.775) 2303700800013 MONIT-REF ((MONIT1)23037002,M.G.Giammarchi+,J,RM,43,1390,2008) 2303700800014 ((MONIT2)23037003,M.G.Giammarchi+,J,RM,43,1390,2008) 2303700800015 ((MONIT3)23037004,M.G.Giammarchi+,J,RM,43,1390,2008) 2303700800016 SAMPLE .Five samples of 12C (in graphite form). Each carbon 2303700800017 target was prepared in the form of a graphite 2303700800018 cylinder with dimensions of 25.4 mm diameter and 2303700800019 20 mm height, for total volume of 10.13 cm3, weight 2303700800020 18.89 g, density 1.86 g/cm3. 2303700800021 ERR-ANALYS (ERR-T) Total error 2303700800022 (ERR-S) Relative uncertainty contribution of 2303700800023 statistical error 2303700800024 (ERR-2) Relative uncertainty contribution of 2303700800025 error in efficiency (Monte Carlo simulation) 2303700800026 (ERR-3) Relative uncertainty contribution of 2303700800027 error in source-detector geometry 2303700800028 STATUS (TABLE) Table 5 from Rad.Measurem.,43(2008)1390 2303700800029 HISTORY (20191101A) SD: SF5=(CUM) deleted from REACTION code. 2303700800030 STATUS updated. ANALYSIS deleted. 2303700800031 (20200117A) SD: DECAY-DATA for Be-7 corrected. 2303700800032 ERR-ANALYS updated. 2303700800033 ENDBIB 31 0 2303700800034 COMMON 11 6 2303700800035 EN-NRM EN-NRM-RSL MONIT1 MONIT1-ERR MONIT2 MONIT2-ERR 2303700800036 MONIT3 MONIT3-ERR ERR-S ERR-2 ERR-3 2303700800037 MEV MEV MB MB MB MB 2303700800038 MB MB PER-CENT PER-CENT PER-CENT 2303700800039 70.7 5.8 3.4 0.6 15.1 2.7 2303700800040 34.7 5.7 2.2 95.6 2.2 2303700800041 ENDCOMMON 6 0 2303700800042 DATA 4 5 2303700800043 EN EN-RSL-FW DATA ERR-T 2303700800044 MEV MEV MB MB 2303700800045 29.8 2.4 0.110 0.012 2303700800046 33.7 2.8 5.50 0.44 2303700800047 38.2 3.1 12.1 0.7 2303700800048 44.7 3.7 17.8 1.4 2303700800049 51.1 4.2 20.5 1.6 2303700800050 ENDDATA 7 0 2303700800051 ENDSUBENT 50 0 2303700899999 ENDENTRY 8 0 2303799999999